ASSEMBLY AND SERVICE MANUAL
Contents
1. Use a three foot long precision straight edge and using a feeler gage check for a maximum of 003 in straight ness at the top edge of the front rail Consult factory REASON With grit buildup uneven loading to linear bearings can effect the straightness of grinding Linear bearings need replacement caused from excessive grinding grit buildup Grinding grit buildup in the linear bear ings can cause uneven carriage movement With enough grit buildup over a period of time bearings may be noisy Rail straightness directly effects grind straightness of outside diameter of the reel in the horizontal plane This plane is not as critical for reel grinding accuracy but still must be held to tolerance listed to hold grind straightness of outside diameter of the reel TROUBLESHOOTING Continued PROBLEN Roundness of reel varies Reel blades are high or low STRAIGHTNESS OF GROUND REEL Use set up gage to check roundness see set up gage instruc tions in manual The high and low indicator readings on the reel outside diameter should not vary over 001 PROBLEN POSSIBLE CAUSE See Above Did not sparkout properly on final grinding pass Grinding stock removal from reel irregular when reversing direc tions of grind A Gibs loose on carriage B Grinding wheel head moving REMEDY Infeed approximately 002 on the infeed dial in final pass and let the grinding2. T Knob Assembly 1 4 20 x 50 Lg Retaining Ring Drive Adapter 1 2 Square Square Key 1 8 x 1 8 x 3 4 Bracket Gearbox Slide Strain Relief Bracket Gearbox Clamp Bracket Gearbox Slide Weldment Spacer Linkage 2 50 Lg Spacer Linkage L H Tha Bellevill Washer 3 8 Shoulder Screw 3709705 Nylon Plug C310420 SSS 5 16 18 x 1 4 CP PT Spacer Linkage R H Thd Spacer Linkage 2 29 Lg SKHCS 3 8 16 x 3 50 Locknut Nylon 3 8 16 Full Linkage Support Bracket Weldment Handwheel 4 50 Diameter Handle Spinning 1 4 20 Hex Jam Nut J257000 1 4 20 Nylok Nut C310620 SKSS SP PT 5 16 18 x 3 8 Rod Double Thread Knob Assembly Center Stand Lock Linkage Geared SHCS 1 4 20 x 3 1 8 Square Key 3 16 x 3 4 DC Motor Brush Ref for Replacement Manual Indexer Shaft Manual Indexer Bracket Grommet 3 8 16 Hex Jam Nut Knob 2 38 OD 6009527 REEL SET UP GAUGE ASSEMBLY PARTS LIST Continued PARTS LIST Continued 6009527 REEL SET UP GAUGE ASSEMBLY DIAGRAM NO PART NO DESCRIPTION Slide Setup Gage Tube Gage Slide Tee Knob Assembly 1 75 Ig Block Adjust Slide 1 4 Flat SAE Washer T Knob Assembly 88 Long Locknut Nylon 1 4 20 Full Dial Indicator SKSS CP PT 1 4 20 x 1 4 Bar Indicator Stop Spring Compression Spring Guide Rod Push on Ring Saddle Stop Tee Knob Assembly Rod Gage Alignment 3708540 Domed Anvil 3 8 C251220 SKSS CP PT 1 4 20 x 3 4 1 4
3. Warning No Fuel
4. 16 x 3 4 B250801 HHDCS 1 4 20 x 1 2 3708147 Shoulder Bolt 375 Diameter x 6 3619224 Spring Compression K190001 10 Flat Washer SHCS 1 4 20 x 1 1 8 Actuator Modification Bearing Pillow Block HHDCS 5 16 18 x 3 4 Front Screw B311001 HHDCS 5 16 18 x 5 16 Rear Screw K311501 5 16 Split Lock Washer 5 16 SAE Flat Washer Clamp Proximity Release Decal Shaft Collar Rubber Washer Actuator Bar Assembly Release Arm Weldment Compression Spring SHCS 1 4 20 x 2 Socket Head Screw Actuator Spacer Sealed Bearing Switch Proximity 18 mm L H Decal Warning Hot Symbol 3 8 16 x 3 4 Hex Head Tapping Screw PARTS LIST Continued 6009531 CONTROL PANEL ASSEMBLY 2 STIP E Se SMS 7 ert aad SIT gt 11964 rr go 1554 PI 255 FUSE 4 AM LES 28962 225 VOLTAGE SENSIR GRIND MOTOR SVITCH MAGNETIC STARTER 9 RELAY SPIN ROTATION SNITCH SPEED POT SYSTEM START SWITTH TRAVERSE RIVE CONTROL TRAVERSE MOTOR SWITCH TRAVERSE SPEED POT ae yo SSP WIRE 36 VIRE INEITIIN SY js ge 2 h 1 u gt H33788802 250524 PARTS LIST Continued 6009531 CONTROL PANEL ASSEMBLY 2 DIAGRAM NO PART NO DESCRIPTION Cord Assy Main Power W32 Motor Assy Spin W33 Wire Assy FER 6FK W75 Cord Assy Motor W31 Motor Assy Trav Wire Assy FER 6FK W76 Control Board Spin 600 Contr
5. Code for Use Care and Protection of Abrasive Wheels For your safety we suggest you benefit from the experience of others and carefully follow these rules DO DO always HANDLE AND STORE wheels in a CAREFUL manner DO VISUALLY INSPECT all wheels before mounting for possible damage DO CHECK MACHINE SPEED against the established maximum safe operating speed marked on wheel DO CHECK MOUNTING FLANGES for equal and correct diameter DO USE MOUNTING BLOTTERS when supplied with wheels DO be sure WORK REST is properly adjusted DO always USE A SAFETY GUARD COVERING at least one half of the grinding wheel DO allow NEWLY MOUNTED WHEELS to run at operating speed with guard in place for at least one minute before grinding DO always WEAR SAFETY GLASSES or some type of eye protection when grinding DON T DON T use a cracked wheel or one that HAS BEEN DROPPED or has become damaged DON T FORCE a wheel onto the machine OR ALTER the size of the mounting hole if wheel won t fit the machine get one that will DON T ever EXCEED MAXIMUM OPERATING SPEED established for the wheel DON T use mounting flanges on which the bearing surfaces ARE NOT CLEAN FLAT AND FREE OF BURRS DON T TIGHTEN the mounting nut excessively DON T grind on the SIDE OF THE WHEEL see Safety Code B7 2 for exception DON T start the machine until the WHEEL GUARDIS IN PLACE 10 DON T JAM work into the wheel D
6. MOWER SUPPORT ASSEMBLY PARTS LIST Continued 6009524 MOWER SUPPORT ASSEMBLY DIAGRAM NO PART NO DESCRIPTION Reel Hub Support Bottom Support VEE Mower Hub Arm Swing Shoulder Bolt 375 Diameter x 6 Lg Adjust Handle Stud Assembly Toggle Pad Center Stand Center Stand Lock Knob Assembly Mower Support 6009221 Adjustable Center Stand K311501 5 16 Split Lockwasher HHDCS 5 16 18 x 1 Knob Assembly Shaft Locking Stud Knob 5 16 18 Insert 6009020 Center Adjustment C374820 Socket Set Screw 3 8 16 x 3 3 8 16 Hex Nut 3 8 Lockwasher Fixed Center Assembly Chain Clamp Vise Grip Roller Spacer Plate d 6009525 MOWER OVERHEAD BAR ASSEMBLY mue PARTS LIST Cont ALTO ADS MJJ o 8c U4 Y Y N ar Pu Sz r dbm Y Jl dl PARTS LIST Continued 6009525 MOWER OVERHEAD BAR ASSEMBLY DIAGRAM NO PART NO DESCRIPTION Knob Assembly Top Clamp Knob Assembly Washer 390 x 1 3 8 O D Bottom Clamp Washer Plain 1 020 x 1 1 2 O D B372801 HHDCS 3 8 16 x 1 3 4 K371501 3 8 Lock Washer K3700
7. No replace potentiometer Wiper inside of potentiometer controls speed Wiper may be bad and not making contact Minimum and maximum pot settings effect traverse speed TROUBLESHOOTING Continued PROBLEN POSSIBLE CAUSE MECHANICAL Carriage travers ing varies speed while grinding A Oil on carriage drive shaft B Lineal bearings in carriage do not rotate freely Traverse speed is too slow A Lineal bearings in the carriage are set too tight B Actuator springs set too tight REMEDY Wipe oil completely from shaft Spray down with WD 40 and wipe off Replace the lineal bearings in the main carriage For more detail see lineal bearing replacement in the adjustment section of the manual Readjust bearings for proper tension For more detail see lineal bearing replacement in the adjustment section of the manual Check to see if actuator bearings have been over loaded causing the bearings to not rotate freely For more detail see actuator setting in the adjustment section of the manual TRAVERSING REASON Driving torque is lost because the oil is decreas ing friction for driving linear actuator bearings Grinding grit over a period of time does get into the lineal bearings and cause excessive drive torque of carriage Abrasive noise is detectable when excessive grit is in the lineal bearings When bearing preload is too tight it causes excessive
8. and black wires If open circuit OL will display Check for worn brushes and replace if required SPIN DRIVE REASON If wire connections are not tight they can cause the motor speed to be erratic Wiper inside of potentiom eter controls speed Wiper may be bad and not making contact Red wire to White wire min FULL CCW 0 ohms max FULL CW 10 000 ohms Red wire to Black wire min FULL CCW 10 000 ohms max FULL CW O ohms TROUBLESHOOTING Continued PROBLEN Spin drive speed goes at one speed only Spin drive motor speed varies MECHANICAL Spin Drive cranks up and down too hard POSSIBLE CAUSE A Wiring hookup to potenti ometer is improper If compo nents have been replace B Defective spin speed control SDC potentiometer C Main circuit board dial pot settings not correct If board has been replaced A IR Comp trim pot not adjusted properly B Torque to rotate the reel too high C Check all terminal connec tions for tightness A The two top and two bottom pivot screws are compressing the conical washer too tight B Check screw adjustment tension on nylon plug riding against the screw thread REMEDY Check potentiometer wiring for proper hookup See that speed pot is wired per electri cal diagram Remove wire leads from Term S1 S2 and S3 If no major change from 0 to 10 000 ohms replace SSP pot Check all pot settings on circui
9. at carriage stops prior to reversing traverse direction for relief grind ing If the carriage traverses to one end of stroke or the other and it stops and does not reverse direction If the carriage traverses past the proximity switch and keeps on traversing in same direction Traverse changes direc tions erratically while running in traverse cycle POSSIBLE CAUSE The dwell time on the traverse drive control not set properly Proximity switch is not working properly or wire connections are loose The two proximity switches have been reversed on the slide bar NOTE This should only happen if the main circuit board has been replaced Proximity switch is not working properly Loose wire to proximity switch REMEDY Reset dwell time as required one increment increase dwell time by 1 2 second First check to see if proximity light comes on When the light is on it means that there is electricity coming to proximity switch Left proximity PROX 1 check Traverse Drive Control TDC between terminals 14 black wire and 15 brown wire Right proximity PROX 2 check TDC between terminals 13 black wire and 15 brown wire Replace proximity switch if the voltages do not read as above Make sure the proximity light is coming on Check proximity spacing to the sensor If no light first check adjustment section for proximity setting If there is a light it means that there
10. countersunk holes Then prop this end up with several 2x4 s so the leveling feet on this end are held out of the countersunk holes Then lift the other end out of the countersunk holes and lift grinder off the pallet THE UNIT WEIGHS 880 LBS TO LIFT USE POWER EQUIPMENT OR GET HELP TO LIFT THE UNIT WALL POSITION BASE The ACCU Spin will require an operating area about 150 x 108 D x 80 H The mower reel will be lifted from behind the machine and the machine operator will operate the unit from the operator s position on the opposite side of the unit Position the base to allow sufficient operating room in both front and behind the machine See FIG 4 The base should be placed on a relatively level concrete floor with ample ceiling height to allow for the installation and operation of the reel elevator Do not place the unit across two concrete slab seams or across a large crack If the unit must be placed near a wall we recommend the wall be located as per FIG 4 IS BADLY OUT OF LEVEL OR BROKEN WILL AFFECT GRINDING QUALITY o PLACING THE GRINDER ON FLOORING THAT ASSEMBLY INSTRUCTIONS Continued LEVEL BASE Each leveling foot has been factory preadjusted so it protrudes from the base 1 3 4 See FIG 1 Raise carriage bellows See FIG 5 Place a level on the top of the front carriage rail near one end of the machine and check the levelness of the unit from side to side Adju
11. if used as specified in this that is damaged or will not perform its intended manual function should be properly repaired or replaced USE THE RIGHT TOOL Don t force the Grinder NEVER LEAVE GRINDER RUNNING UNATTENDED or an attachment to do a job for which it was not TURN POWER OFF Do not leave grinder until it designed comes to a complete stop WEAR PROPER APPAREL Wear no loose KNOW YOUR EQUIPMENT Read this manual clothing gloves neckties or jewelry which may carefully Learn its application and limitations as get caught in moving parts Nonslip footwear is well as specific potential hazards recommended Wear protective hair covering to contain long hair KEEP ALL SAFETY DECALS CLEAN AND LEGIBLE If safety decals become damaged or ALWAYS USE SAFETY GLASSES illegible for any reason replace immediately Refer to replacement parts illustrations in Service Manual SECURE YOUR WORK Make certain that the for the proper location and part numbers of safety cutting unit is securely fastened with the clamps decals provided before operating DO NOT OPERATE THE GRINDER WHEN UNDER DON T OVERREACH Keep proper footing and THE INFLUENCE OF DRUGS ALCOHOL OR balance at all times MEDICATION SAFETY INSTRUCTIONS IMPROPER USE OF GRINDING WHEEL MAY CAUSE BREAKAGE AND SERIOUS INJURY Grinding is a safe operation if the few basic rules listed below are followed These rules are based on material contained in the ANSI B7 1 Safety
12. is electricity coming to the proximity switch Left proximity PROX 1 check TDC between terminals 14 black wire and 15 brown wire Right proximity PROX 2 check TDC between termi nals 13 black wire and 15 brown wire Replace proximity switch if the voltages do not read as above Check wire connections from the proximity switches and tighten down screws TRAVERSING REASON The light coming on shows the proximity is getting electrical contact Proximity light on 0 Volts DC Proximity light off 12 Volts DC Proximity light on 0 Volts DC Proximity light off 12 Volts DC This will only happen if the main reversing board has been replaced and not rewired to electrical dia gram Proximity light on 0 Volts DC Proximity light off 12 Volts DC Proximity light on 0 Volts DC Proximity light off 12 Volts DC A loose wire connection will give intermittent electrical contact TROUBLESHOOTING Continued PROBLEM POSSIBLE CAUSE A Traverse Motor Switch is not on Traverse motor does not work B Blown fuse C No voltage going to motor D Bad traverse motor REMEDY Turn on motor switch Replace the fuse and de crease stock removal rate Replace actuator bearings if they are worn and do not rotate freely For more detail see actuator maintenance in the adjustment section of the manual Replace the lineal bearings in the main carriage
13. loading to drive the carriage When lineal actuator is disengaged the proper traverse load 2 to 3 lb Use a tension scale to check A general guide only NOTE Check with linear actuator released When actuator spring tension is excessive bear ings will not rotate freely causing carriage to not run freely TROUBLESHOOTING Continued PROBLEN Actuator drive shaft whipping excessively at high traverse speed POSSIBLE CAUSE A Bearing shaft support blocks are not perpendicular to carriage shaft B Drive shaft is bent C DC drive motor shaft not concentric to drive shaft REMEDY Loosen the screws that retain the shaft support blocks on each end of the actuator shaft Use a square to align them 90 degrees as shown and holding them 3 375 dimension For more detail see align front rail and drive shaft in the adjust ment section in the manual Turn the actuator screw clockwise 1 4 to 1 2 turn to release actuator from the drive shaft Slide the carriage to one end of the machine Mount indicator in the middle of the two bearing support blocks Check for a maximum of 015 indicator reading when you rotate the shaft Replace shaft if required NOTE Item A above must be done proper to this step Loosen two bolts holding the motor Align the motor shaft concentric to the drive shaft See if coupling spiral gaps are equally spaced when re aligned For more detail see Traverse Mo
14. loose STRAIGHTNESS OF GROUND REEL REMEDY Tighten up two head mounting bolts torque screws to 19 ft lbs There are five adjusting handles to tighten Two on the base for the adjusting arm locks two on the slots on the adjusting arm and one set screw with a nylon plug for tension for grinding wheel vertical height adjustment locking screw The two lower adjustable handles on pivot of the adjustable arm lock do not need adjustment each time Tighten gib screws to prevent movement Crank the motor slide base forward and adjust the gib screws Then crank the motor slide base all the way back to adjust the final gib screws Tighten pillow block socket head cap screws first Adjust pillow block bearings to carriage rod shafts For more detail see setting of pillow block bearings in the adjust ment section of the manual All reels are mounted with two each V support brackets or two center support brackets Se sure they are tight to the square tooling support tube in horizon tal and vertical plane Tighten the horizontal locking screws first firmly pull over to the side of the tooling support tube Then tighten the vertical locking handle to pull down the sup ports to the top of the tooling support tube Last retighten the vertical locking hand knob When using center supports check to see if the fixed center is screwed in tight using a wrench The adjustable center is to be locked tight with locking k
15. must be tensioned so when the lock handle is locked the maximum belt deflection is 12 at a 10lb load TRAVERSE MOTOR COUPLING Traverse motor shaft to be concentric to traverse shaft by 010 The traverse shaft and motor shaft are to have at least 12 to 50 clearance so they do not rub each other The coupling is to be locked down tightly with the spiral groove to an equal gap spacing for the full length TROUBLESHOOTING ELECTRICAL PROBLEN Spin and Grind ing motors do not function no apparent power to machine POSSIBLE CAUSE A Spin Drive Switch SDS or Grinding Motor Switch GMS is not on B Main power source is tripped breaker is off or grinder is not plugged in C System Start Switch SSS is not on D Spin speed potentiometer SSP set to zero E Blown fuse F Voltage not going to magnetic starter Solenoid in magnetic starter does not pull in Solenoid pulls in but no voltage out of magnetic starter ELECTRICAL MAIN POWER REMEDY Turn switch on Reset breaker turn switch on and plug machine in Press System Start Switch Set higher for voltage output Pull fuse and use OHM meter to check fuse With the volt meter set on AC voltage check L1 black to L2 white for lines coming in of 120 volt Check power source fuse Check for loose connections on magnetic starter Check for 115 Volts AC across starter coil A1 to A2 NOTE Contactor clicks
16. not change this setting Max Speed Factory set at full CW 4 30 Do not change this setting IR COMP Factory set to 9 00 Regulation of a spin drive motor may be improved by slight adjustment of the IR COMP trim pot clockwise from its factory set position Overcompensation causes the motor to oscillate or to increase speed when fully loaded If you reach such a point turn the IR COMP trim pot counterclockwise until the symptoms disappear Torque Factory set to 12 30 Limits DC motor armature current to prevent damage to the motor or control When spin drive torque is above the preset current limit and the motor stalls the motor is then jerky The current limit can be reset up to 1 30 Do not go beyond the 1 30 setting NEED ADJUSTMENT IS THE IR COMP DIAL CONSULT FACTORY BEFORE ADJUSTING ANY OF THESE DIALS THE ONLY SETTING THAT EVER SHOULD S EA SI lt E OE XV ui QU me TALL HS Ot I C7 C7 1 dN al 00 6 Potentiometer Clock Orientation a ADJUSTMENTS Continued PROXIMITY SWITCH For the proximity switch to perform properly and reverse the direction of the carriage at each end of the rails a distance of 4 mm 156 to 6 mm 234 needs to be maintained between the proximity sensing bracket and the proximity switch NOTE Light on proximity activates when metal crosses over the switch FREQUENT OVERLOADING AND CIRCUIT TRIPPING The magnetic starter is factory set at a 12 AMP
17. when engaging Check for 120 volt AC be tween terminals T1 black and T3 white T1 and T3 are main power out lines NOTE T2 is jumpered to T3 Check reset overload on starter by pushing down on blue button Check terminal connections between contactor and overload relay If no voltage on output replace magnetic starter REASON Speed pot varies voltage when set to 0 No voltage to run gearmotor Overload on gearmotor may have blown a fuse AC voltage power source required These wires control mag netic starter voltage for main power Overload may have been tripped when moving machine or machine grinding head motor over load or electrical power surge TROUBLESHOOTING Continued PROBLEN Spin drive motor does not work Assuming AC power to other motors POSSIBLE CAUSE A Bad Spin Drive Control SDC board B Bad Spin Speed Potenti ometer SSP 10K C Bad traverse motor REMEDY Check DC voltage A1 to A2 to traverse motor Set potentiom eter to maximum speed setting Voltage should be approximately 110 volt Check fuse and wiring push on connections Replace spin drive circuit board if items B amp C check out properly To test the potentiometer remove wires leads from Term S1 S2 and S3 If no major change from 0 to max ohms replace SSP pot Remove wires from A1 to A2 from the spin motor Check with the ohm meter for 0 ohms across the white
18. x 3 4 long I RUE hex head bolts flatwashers and lockwashers on each end The holes in the main frame have weld nuts on the interior of frame for threading the hex head bolts See FIG 8 amp 9 Overhead support Bolt the overhead support arm into the two 2 end ong mames frames with the three 3 3 8 16 x 2 3 4 long hex head bolts lockwashers and nuts on each end 2 each bolt 3 4 long Hold the bottom portion of the overhead clamp in lockwashers amp nuts place as shown in FIG 10 amp 11 and attach the top portion by using the four 4 3 8 16 x 3 1 4 long threaded knob assemblies Assemble the clamp s lips onto the end of the clamp rod Then mount the clamp rods through clamp rod handwheel assembly NOTE There are two sizes of clamp lips Normally the smaller size is used Overhead support arm Clamp rod Clamp rod handwheel assembly Top portion Long threaded knob assembly Bottom portion Each side 2 each bolts 1 3 4 long flatwasher amp lockwasher Knob Assembly Upper Portion Overhead Bar Clamp Rod Large I D Washer Lower Portion Small I D Washer ASSEMBLY INSTRUCTIONS Continued INSTALL REEL ELEVATOR Bolt the left and right end frames to the top and bottom mounting brackets already attached to the end panels using four 4 3 8 16 x 3 4 hex head cap screws lockwashers and nuts See FIG 13 The mounting bracket might have to be loosened and adjusted to line up with
19. 01 3 8 SAE Flat Washer 6009518 Support Bar Weldment L H 6009519 Support Bar Weldment R H B371201 HHDCS 3 8 16 x 3 4 6009015 Bar Overhead B374401 HHDCS 3 8 16 x 2 3 4 3 8 16 Hex Nut Mower Clamp Weldment Knob 5 16 18 Insert Clamp Lip Large Clamp Lip Small RHDMS 5 16 18 x 2 Rubber Tip Hood Cushion PARTS LIST Continued 6009529 GRINDING HEAD ASSEMBLY as ERIN WS Ne 2 y x dm N a PARTS LIST Continued 6009529 GRINDING HEAD ASSEMBLY DIA PART PART DIA PART PART NO NO NAME NO NAME 10 32x1 2 Socket Head Cap Screw 3709370 Handle 10 82x3 4 Pan Head Machine Screw 3709437 3 8 16 Adj Handle 10 32x3 8 Pan Head Machine Screw 3709463 Rod End Bearing 1 4 20x1 2 Truss Head Machine Screw 3709620 Conical Washer 1 4 20x1 Button Head Cap Screw 3709764 V Belt 1 4 20x3 1 8 Socket Head Cap Screw 3709809 375 Dia x 38 Lg Shoulder Bolt 5 16 18x1 2 Socket Head Cap Screw 3809047 Clear Indicator 5 16 18x5 8 Hex Head Cap Screw 3889059 1 13 OD 2 0 Lg Compr Spring 5 16 18x7 8 Hex Head Cap Screw jai 62 Bore Pulley 1 4 20x1 4 Socket Setscrew Cup Pt 6009040 Belt Guard Weldment 1 4 20x5 8 Socket Setscrew Cup Pt 3969027 Adjusting Arm 1 4 20x1 1 2 Socket Setscrew Cup Pt 3969057 Reel Guide Finger 5 16 18x1 4 Socket Setscrew Cup Pt 3969058 Gui
20. 20 Jam Nut Clamp Spring Loaded SSS 5 16 18 x 1 4 CP PT Nylon Plug Shoulder Bolt 1 4 D x 3 4 Set Collar 1 4 with SSS Tee Knob Assembly 2 25 Lg Plug Spacer Tee Knob Assembly Nylon 6009531 CONTROL PANEL ASSEMBLY 1 inued PARTS LIST Cont PARTS LIST Continued 6009531 CONTROL PANEL ASSEMBLY 1 DIAGRAM NO PART NO DESCRIPTION Electrical Box Weldment Cover Electrical Box Decal Warning 8 32 x 1 Pan Head Machine Screw Decal Control Panel Symbols 3707367 Rocker Switch DPST 3707567 Pushbutton Stop 3707564 Pushbutton Start 3707446 Knob Potentiometer 3707080 Switch Toggle Control Board Assy Kep Nut 10 24 NC Control Board 25HP Starter Magnetic Overload Phil Pan Screw 8 32 x 62 R000558 Kep Nut 8 32 NC B192013 Phil Pan Screw 10 24 x 1 1 4 Long B190809 Phil RHS 10 24 x 1 2 3709864 Tinnerman Nut K371501 3 8 Lockwasher B371001 HHCS 3 8 16 x 5 8 3707279 Strain Relief 30 Wire 3707066 Strain Relief 22 24 Wire 3707275 Strain Relief 37 43 Wire B130812 Phil Pan Screw 6 32 x 1 2 Kep Nut 6 32 Potentimeter Assy Traverse Fuse Block Potentimeter Assy Spin Washer 8 Ext Tooth Relay DPST 120 V Coil Socket 8 Pin Relay Low Voltage Sensing Decal Warning Electrical 3707075 Cover switch J317100 Nut 3 8 16 Locknut Shoulder Bolt 375 Dia x 375 Long Mounting Block N C Contact Block N O Contact Block PARTS LIST Continued 6009524
21. 3649018 Outer Flange 6009195 Grind Motor Cord 3700090 Grinding Wheel 6 Dia x 75 Wide 3707976 3 8 Cable Connector 3707933 Cord Clip ae 50 Dia Hole Plug bys Handwheel 4 5 Dia 3707991 3 4 HP Motor 3708213 24 OD x 62 Lg Comp Spring B311211 5 16 18x3 4 Socket Head Screw 3708458 Sharp Warning Decal R000453 Flat Washer 3708461 RPM Warning Decal 6009133 Small Relief Guide Finger 3708561 3 8 16x1 56Lg Adj Handle 3702508 Dressing Stick 3709062 Conical Washer 3709304 Thrust Washer 6009530 CARRIAGE ASSEMBLY inued PARTS LIST Cont PARTS LIST Continued 6009530 CARRIAGE ASSEMBLY DIAGRAM NO PART NO DESCRIPTION 3969004 Carriage Base Assembly R000522 1 4 20 Kep Nut Dust Deflector Weldment Dust Collector Weldment 3969018 Carrier Shaft K251501 1 4 Split Lock Washer SKHDCS 1 4 20 x 1 1 2 Bellows Rail Long B250801 HHDCS 1 4 20 x 1 2 K250001 1 4 SAE Flat Washer Hose Clamp Retainer Bellows Phillips PHS 1 4 20 x 3 8 Ball Bushing Bearings SKHDCS 10 24 x 5 8 Spherical Bearing Hole Plug 6009526 ELEVATOR ASSEMBLY PARTS LIST Continued PARTS LIST Continued 6009526 ELEVATOR ASSEMBLY DIAGRAM NO PART NO DE
22. 600 MANUAL SPIN RELIEF REEL MOWER GRINDER ASSEMBLY AND SERVICE MANUAL SAFETY INSTRUCTIONS Safety Awareness Symbols are inserted into this manual to alert you to possible Safety Hazards Whenever you see these symbols follow their instructions The Warning Symbol identifies special instructions or The Caution Symbol identifies special instructions procedures which if not correctly followed could result or procedures which if not strictly observed could in personal injury result in damage to or destruction of equipment KEEP GUARDS IN PLACE and in working order 13 MAINTAIN GRINDER WITH CARE Follow instructions in Service Manual for lubrication and REMOVE WRENCHES AND OTHER TOOLS preventive maintenance KEEP WORK AREA CLEAN DISCONNECT POWER BEFORE SERVICING or when changing the grinding wheel DON T USE IN DANGEROUS ENVIRONMENT Don t use Grinder in damp or wet locations or REDUCE THE RISK OF UNINTENTIONAL expose it to rain Keep work area well lighted STARTING Make sure the switch is OFF before plugging in the Grinder KEEP ALL VISITORS AWAY All visitors should be kept a safe distance from work area USE RECOMMENDED ACCESSORIES Consult the manual for recommended accessories Using MAKE WORK AREA CHILD PROOF with improper accessories may cause risk of personal padlocks or master switches injury DON T FORCE THE GRINDER It will do the CHECK DAMAGED PARTS A guard or other part job better and safer
23. Carriage should traverse freely with a 3 lb maximum loading Also check for excessive bearing preload For more detail see carriage bearing replacement in the adjustment section of the manual Check for 90 volt DC at the circuit board leads going to the motor Across terminals A1 and A2 check reading with a voltage meter When there is voltage from the circuit board but DC motor does not run check wiring and connections The voltage reading varies with speed pot setting NOTE Make sure speed pot setting is towards the maxi mum dial reading for 90 volts Check for incoming voltage at L1 to L2 for at least 105 Volts AC Red power light is on Remove the brushes one at a time and maintain orientation for reinsertion See if brush is worn short 3 8 9 5 mm minimum length and look at wear pattern on commuter for arcing Replace brushes if necessary Replace motor if brushes are good Remove wires from A1 to A2 from the spin motor Check with the ohm meter for 0 ohms across the white and black wires TRAVERSING REASON Extremely heavy grinding cuts cause excessive loading of the motor Worn and binding actuators causes heavy loading to motor Grinding grit over a period of time does get into the lineal bearings and causes excessive drive torque of carriage This checks to see that voltage is getting to the control board A short brush does not make an adequate electrical connection to run the e
24. ELECTRICAL GROUNDING PROCEDURE CONTACT A QUALIFIED ELECTRICIAN MAINTENANCE amp LUBRICATION DAILY MAINTENANCE IS SPECIFIED ON PAGE 4 OF THE OPERATOR S MANUAL AND IS TO BE PERFORMED BY THE OPERATOR LISTED BELOW ARE PERIODIC MAINTENANCE ITEMS TO BE PERFORMED BY YOUR COMPANY S MAINTENANCE DEPARTMENT 1 Check gib plate adjustment in the grinder carriage base monthly See Troubleshooting Section for adjustment Check the brushes on the auto traverse drive motor and spin motor once a year Replace as necessary See Troubleshooting Section Check the free play in the grinding wheel shaft bearing once a year Replace if excessive play exists Lift the bellows See FIG 26 and wipe off the traverse driveshaft and the bearing rails monthly When a squeaking noise is coming from the actuator Carriage bearings follow the lubrication procedure for actuator liga and linear bearings Generally this will be every six months to a year LUBRICATION OF ACTUATOR AND LINEAR BEARINGS STEP 1 Thoroughly clean all three shafts STEP 2 Flood spray all three shafts with a spray lubricant do not use a teflon based lubricant until the lubricant is dripping off the shafts Then run the carriage back and forth through its range of travel This will carry the lubricant into the actuator and bearings D m NOTE Because of the flood of lubricant you may find that 4 the actuator slips and traversing is erratic or stalls This is not a p
25. ON T STAND DIRECTLY IN FRONT of a grinding wheel whenever a grinder is started DON T FORCE GRINDING so that motor slows noticeably or work gets hot AVOID INHALATION OF DUST generated by grinding and cutting operations Exposure to dust may cause respiratory ailments Use approved NIOSH or MSHA respirators safety glasses or face shields and protective clothing Provide adequate ventilation to eliminate dust or to maintain dust level below the Threshold Limit Value for nuisance dust as classified by OSHA SAFETY INSTRUCTIONS This machine is intended for reel mower reel blade grinding ONLY Any use other than this may cause personal injury and void the warranty To assure the quality and safety of your machine and to maintain the warranty you MUST use original equipment manufactures replacement parts and have any repair work done by a qualified professional ALL operators of this equipment must be thoroughly trained BEFORE operating the equipment Do not use compressed air to clean grinding dust from the machine This dust can cause personal injury as well as damage to the grinder Machine is for indoor use only Do not use a power washer to clean the machine Low Voltage Relay Z The grinder is equipped with a low voltage relay which is factory preset at 100 VAC If the power supply line does not deliver 100 VAC power under load the relay will open and trip out the starter If this occurs your power supply line is inad
26. RINGS 7 Attach the three linear bearing pillow blocks loosely to the bottom of the carriage with their tension adjustment den screws FIG 34 facing outward Clean the carriage rails NOTE The two rails are interchangeable and are also reversible end for ena Insert a rail through the rear two pillow blocks and align the rear pillow blocks to each other with a straight edge laid along their sides See FIG 36 When aligned Underside of tighten the four socket head screws which hold each rear Carriage pillow block Slide the other carriage shaft through the Straightedge front bearing but do not tighten the socket head screws Lift the complete carriage assembly back onto the Grinder main base and secure the rear carriage rail to its V groove bosses with the six bolts With the front rail resting in the V groove bosses and the carriage approximately centered on the machine tighten the two outside socket head screws which secure the front pillow block Lift the front of the carriage and tighten the two inside pillow block screws Secure the front carriage rail to its V groove bosses with the six bolts Recheck the bearing tension The tension is correct when you try to lift the carriage and can feel no free carriage movement up or down Check for excessive carriage traverse load by using a spring scale to pull on the carriage parallel to the drive shaft as in FIG 30 There should be only about a 3 to 5 Ib pulling force
27. SCRIPTION 3708645 6009166 End Frame Decal Warning Winch Lock Nut 5 16 18 Nylon Full HHDCS 3 8 16 x 1 Lock Nut Nylon 3 8 16 Full Decal Warning Winch Symbol U Bolt 5 16 18 Spreader Bar Grab Hook Hook and Cable Assembly HHDCS 3 8 16 x 3 4 3 8 Split Lock Washer 3 8 16 Hex Nut K370001 Washer 3 8 B372801 HHDCS 3 8 16 x 1 3 4 Overhead Bar Weldment 6009177 Winch Bracket B373601 3 8 16 x 2 1 4 Hex Head Cap Screw PARTS LIST Continued 6009528 MAIN BASE ASSEMBLY PARTS LIST Continued 6009528 MAIN BASE ASSEMBLY DIAGRAM NO PART NO DESCRIPTION H371602 3 8 x 1 Roller Pin 3969148 Anchor Strap J371000 3 8 16 Hex Nut 3 8 Lock Washer HHDCS 3 8 16 x 3 4 3 8 SAE Flat Washer Decal Large Foley United HHCS 3 8 16 x 1 Adjustable Leveling Bolts Leg Brace Frame Leg Weldment L H Base Main Machined Tooling Bar Weldment 3579109 Nylon Plug C311220 SSS CP PT 5 16 18 x 3 4 Thrust Washer Shaft Locking Stud 3708693 3 8 16 x 75 Hex Head Self Tapping Screw J377000 Lock Nut Nylon 3 8 16 Thin Handwheel 3 50 Diameter Adjusting Handle 3 8 16 Support Cross Slide Shaft Slide Cross Slide Shaft Adjusting Acme L H Frame Leg Weldment R H Threaded Cut Screw 10 32 x 5 8 Hex Nut 1 2 13 Cover Frame Leg L H cover Frame Leg R H Bellville Washer Decal Warning Saftey Decal Warning Respirator Decal Warning Hearing Protection Decal
28. To double check manually slide the carriage assembly from one end of its travel to the other There should be uniform resistance through the full range of travel Slide the linear actuator under the carriage and line up the hole in the carriage with the tapped hole in the top of the actuator block Insert the actuator mounting screw through the self aligning bearing and tighten it Be careful not to cross thread the screw Reinstall the actuator release lever into the linear actuator Reattach the two carriage bellows Refer to the assembly section of this manual ADJUSTMENTS Continued TO ADJUST THE CARRIAGE GIB PLATE Carriage The gib plate must be readjusted occasionally to elimi nate free play Otherwise the grinding head can move Frant from side to side and the reel may be ground unevenly Gib Screw The gib must allow the carriage to be cranked freely forward and back without any side play See FIG 37 To adjust 1 Crank the carriage all the way forward toward the operator position Tighten the front gib screw until the carriage has no side play but the horizontal handwheel can still be cranked Crank the carriage gradually back away from the operator position and adjust the remaining gib screws as you go ADJUSTMENTS Continued TO ALIGN THE MOTOR SHAFT AND DRIVE SHAFT Loosen to align shafts There must be 0 12 to 0 50 in 3 0 to 12 7 mm end auqa clearance between the traverse motor o
29. ay DISTRIBUTION PANEL WITH NO OTHER which is factory preset at 100 VAC If the power MAJOR POWER DRAW EQUIPMENT ON THE supply line does not deliver 100 VAC power under SAME LINE load the relay will open and trip out the starter If this occurs your power supply line is inadequate IT IS REQUIRED THAT THE POWER and must be correct before proceeding further with DELIVERED TO THIS GRINDER IS 115 VAC the grinder 15 AMPS THE TOLERANCE ON THIS POWER REQUIREMENT IS 5 THEREFORE THE MINIMUM VOLTAGE REQUIREMENT IS 109VAC WITH 15 AMPS Z VOLTAGE MUST BE CHECKED WITH ALL G ACTORY PRESET EQUIPMENT UNDER LOAD OPERATING ON THE CIRCUIT TRIP LIGHT INDICATES LOW VOLTAGE DELIVERED TO GRINDER SS SS DO NOT OPERATE THIS GRINDER WITH AN EXTENSION CORD SS RSS SSSR RS PROPER GROUNDING OF THE RECEP TACLE GROUND IN YOUR BUILDING MUST BE VERIFIED IMPROPER GROUNDING IN YOUR BUILDING MAY CAUSE THE GRINDER TO MALFUNCTION FOR 15 ANP RATED LARGE MACHINES Below is a list of required wire size in your building For 0 to 30 Feet from panel to receptacle Use 14 Ga Wire For 30 to 50 Feet from panel to receptacle Use 12 Ga Wire For 50 to 80 Feet from panel to receptacle Use 10 Ga Wire For 80 to 140 Feet from panel to receptacle Use 8 Ga Wire For 0 to 9 Meters from panel to receptacle Use 2 5mm Wire For 9 to 15 Meters from panel to receptacle Use 4 0mm Wire For 15 to 24 Meters from
30. de Finger Support 3 8 16x1 1 4 Socket Setscrew Cup Pt 3969065 406ID x 1Lg Steel Spacer 25 Dia x 1 75Lg Roll Pin 4509385 Rotation Decal 31 Dia x 1 Lg Roll Pin 6009024 1 2 10 ACME Backlash Nut 38 Dia x 1 25 Lg Roll Pin 6009025 Gib Plate 50 Dia x 1 25 Lg Dowel Pin 6009026 Tapped Pivot Sleeve 1 4 20 Hex Nut zet ACME Adjusting Shaft 1 4 20 Hex Jam Nut p Keeper Plate 1 4 20 Thin Locknut 6009030 Shaft Locking Stud 3 8 24 Hex Nut 6009031 386 ID x 56Lg Steel Spacer 3 8 16 Locknut Jam Nylon 6009034 Calibrated Ring 3 8 16 Locknut Hex Nylok Full 6009037 Wheel Guard 1 2 20 Hex Jam Nut 6009041 Angle Locking Pin Rubber Gasket 6009044 4 50 Dia Modified Handwheel 10 Flat Washer 6009083 Grinding Head Slide Base 1 4 Flat Washer 6009084 Grinding Head Pivot Base 1 4 Split Lock Washer 6009088 Grinding Head Swivel Base 5 16 Flat Washer 6009136 Feed Screw Guide 5 16 Split Lock Washer m Rear Belt Guard 3 8 Flat Washer En ACME Adjusting Shaft Te 3 8 Split Lock Washer EN Tee Handle Assembly 6009125 Rubber Washer 6009587 Grinding Head Arbor Assembly 6009039 Grind Head Spash Guard 6009598 1 4 20 x 5Lg Tee Knob Assy 3579109 Nylon Plug 3 16 Dia 3708448 Electrical Warning Decal En Spacer 191 ID x 438 OD x 43 Lg 3707155 Black Wire Nut w Setscrew
31. e speed gives a higher quality of finish required in the final grind To prevent grinding head from moving during grind ing To prevent grinding head from moving or pivoting during grinding When motor base and slide base mounting surface are not aligned to each other the two adjusting arm locks will not hold the motor base rigid TROUBLESHOOTING Continued PROBLEN POSSIBLE CAUSE Grinding stock removal from reel irregular when reversing direc tions of grind C Carriage has varying load in either direction from grinding grit buildup inside of linear bearings D Carriage has vertical movement Too heavy a burr on cutting edge of reel blades Too heavy a grind on final grinding pass Cone shape of reel Reel position not parallel to carriage travel STRAIGHTNESS OF GROUND REEL REMEDY With linear actuator released from the carriage check for a 2 to 3 lb traversing load in both direction When there is a varying load or excessive noisy bearings have linear bearings replaced For more detail see replace carriage linear bearings in the adjust ment section Adjust linear bearings For more detail see adjustment section for proper adjustment Make two infeeds of 002 on the infeed dial each for grinding then let the grinder sparkout For sparking out in grinding always traverse grinding head with no infeed for final 20 passes Use a hardwood board or a deburrin
32. ed then back off 1 2 turn Make sure the set screw is compressing the nylon plug tightly on the vertical adjusting screw CONICAL WASHER NYLOK HEX NUT ADJUSTMENTS Continued TO ELIMINATE CARRIAGE INFEED BACKLASH If there is backlash in the carriage infeed handwheel See Shoulder Bolt amp Brass Nut FIG 51 there are two adjusting points to check 1 Conical washers behind the shaft adjusting nut A Unscrew the shoulder bolt B Hold the horizontal handwheel and turn the shaft adjusting nut counterclockwise until the conical washers are touching each other Continue turning the nut counterclockwise until the next notch is centered over the shoulder bolt hole Then turn the nut one notch 40 degrees further C Reinstall the shoulder bolt to lock the nut in position 2 Washers behind the handwheel A Loosen about one half turn the set screw holding the handwheel to the shaft Tighten the hex nut which secures the handwheel to 100 in lbs 1 15 kg m then back it off 1 2 turn Check for 015 in 4 mm gap between the wave washer and flat washer See insert to FIG 52 Reajust the hex nut if necessary Tighten the set screw holding the handwheel to the shaft Carriage Infeed Hand wheel SET SCREW DIAL RING HANDWHEEL 3 NYLoK ADJUSTING NUT HEX NUT CONICAL WASHER SHOULDER BOLT A HDN WASHER CONICAL WASHER TE ove FIG 52 ADJUSTMENTS Continued BELT TENSION The belt
33. equate and must be correct before proceeding further with the grinder CEE mm Factory PRESET 4 TRIP LIGHT INDICATES LOW VOLTAGE DELIVERED CSCW SS SS TO GRINDER I TABLE OF CONTENTS Safety Instructions Assembly Instructions Maintenance and Lubrication Adjustments Troubleshooting Electrical Spin Drive Traversing Page 29 33 Straightness of Ground Reel Page 34 39 Parts List Page 40 62 ASSEMBLY INSTRUCTIONS UNPACK CARTONS Remove the wood board structure and plastic wrap around the unit The cartons should be opened and assembled in the following sequence 1 Control Panel 2 Overhead Support Assembly 3 Elevator Assembly 4 Setup Gauge Movement of the control panel box is limited because it is prewired at the factory and cords protrude from one end of the box and it is already prewired to unit Remove the three 3 boxes without protruding power cords overhead support box elevator box set up gauge box and place aside Also remove the overhead bar which is lag bolted to the skid and the left and right overhead bar weldments If any problems occur refer to the shipping and receiving instruction Double check the packing cartons for any miscellaneous items or other manuals before disposing of cartons CONTROL BOX Remove the control box from its shipping carton and mount the right end of the unit with the two 2 3 8 16 x 5 8 hex head bolts and two 2 lockwashers provided The contro
34. g tool is desired for complete burr removal The spin drive to be towards the higher RPM See chart in Operating Instruction Section of the manual NOTE This process refers to sparkout but what we are looking for is a near sparkout approximately a 99 reduction in grinding spark from normal grind Do not run sparkout until you have no sparks because this could be an extremely extended period Use reel setup gage proce dure touching off on reel hub to zero out the reel position from each end For more detail see reel setup gage procedure in manual REASON With grit buildup uneven loading to linear bearings can effect the straightness of grinding Linear bearings need replacement caused from excessive grinding grit buildup Grinding grit buildup in the linear bear ings can cause uneven carriage movement With enough grit buildup over a period of time bearings may be noisy Proper linear bearing adjustment is needed to eliminate zero vertical movement Light grinds in final passes create less of a burr and would remove some of previous burrs from heavy grind passes Reel hub has to be parallel to carriage traverse rails so reel is not cone shaped TROUBLESHOOTING Continued PROBLEM POSSIBLE CAUSE Relief grind on Large finger guide is mounted the reel blades on backwards do not go full length Large finger guide is too wide STRAIGHTNESS OF GROUND REEL REMEDY Moun
35. inding head out onto the table in front of the Grinder Be careful you don t damage the motor cord Lift the carriage and slide the rails out of the bearings one at a time Remove the three linear bearing pillow blocks four screws each from the bottom of the carriage and discard them One at a time slide the three new linear bearing pillow blocks onto a carriage rail Adjust the tension screw FIG 34 on the side of each bearing block so that when you radially rotate the pillow block around the carriage See FIG 35 rail there is no free play between the bearing and rail You should feel a strong drag Repeat this adjustment to all three pillow blocks and then remove the pillow blocks from the carriage rail NOTE The tension is too tight if you feel a cogging action when you rotate a pillow block around the rail This cogging is caused by the bearing skidding on the rail Rocking the bearing block back and forth should be a smooth uniform motion BEARINGS WHICH ARE TOO TIGHT OR TOO LOOSE WILL CAUSE POOR GRINDING QUALITY BEARINGS WHICH ARE TOO TIGHT WILL ALSO HAVE A MUCH SHORTER LIFE AND COULD DAMAGE THE RAIL Proximity Sensing Bracket FIG 32 Actuator Mounting Screw under the rubber splash guard a D Drive Shaft Seal Plate Actuator Release Lever FIG 33 Carriage Tension Adjustment Screw Radial Rotation O ADJUSTMENTS Continued TO REPLACE THE CARRIAGE LINEAR BEA
36. ion Factory set at full CCW 8 30 Do not change this setting Left Traverse Reverse Acceleration Factory set at full CCW 8 30 Do not change this setting DB Dead Band is the potentiometer setting for the 50 or 60 Hz cycle control Factory set to 9 00 works for both 50 and 60 Hz Do not change this setting Calibrating the DWELL TIME rotary DIP switch adjusts the amount of time the process remains in the stop position after a limit switch is actuated The DWELL TIME range is adjustable from O 4 seconds A DIP switch setting of O sets the DWELL TIME to O seconds while a setting of 8 sets the DWELL TIME to 4 sec onds Dwell time is preset to 2 setting for a 1 second dwell time when reversing at each end of stroke Diagnostic LED s indicate the function that is currently being performed POWER indicates that ac power is being applied to the control FORWARD indicates that the process is running in the forward direction traversing left REVERSE indicates that the process is running in the reverse direction traversing right PROX 1 FWD LIMIT lights when the forward limit switch is actuated left prox PROX 2 REV LIMIT lights when the reverse limit switch is actuated right prox DWELL lights when the process remains stopped after a proximity switch is actuated Potentionmeter Clock Orientation ADJUSTMENTS Continued POTENTIOMETER ADJUSTMENTS SPIN DRIVE CONTROL SDC Min Speed Factory set at full CCW 8 30 Do
37. l panel is totally prewired at the factory Fasteners are in an envelope in the box Excess wire is provided to allow the control box to be packaged The excess wire should be fed back through the hole in the leg and under the base as it allows full travel of the carriage and full range of location of the spin drive INSTALL SPIN DRIVE UNIT Remove the spin drive from the left side and turn it around and mount it on the right hand side of the square mount ing bar when facing the back of the machine and lock in place with the two 2 locking knobs See FIG 2 INSTALL SPINNING HANDLE The spinning handle for the Infeed Handwheel is packaged in an envelope taped to the handwheel See FIG 3 Install with the hardware included in the envelope Leveling Feet Hex Jam Nut Spin Drive Unit Locking Knobs Regular Hex Nut Lock Nut oo ASSEMBLY INSTRUCTIONS Continued UNSTRAP CARRIAGE Remove the shipping strap which holds the carriage in place The bolt that holds the shipping strap to the leg can o be discarded MOWERS J N LIN REMOVE GRINDER FROM WOOD PALLET a Remove the grinder base from the wood pallet This is accomplished by unbolting the bracket that holds each base leg to the bottom of the wood pallet The four level ing screws are seated in countersunk holes in the wood pallet To remove the grinder from the pallet you must first lift one end of the base high enough so both leveling feet are out of their
38. lectrical motor NOTE Brushes are long lived and seldom need replacing TROUBLESHOOTING Continued PROBLEN Traverse speed control goes at one speed only POSSIBLE CAUSE A Wiring hookup to potenti ometer is improper If compo nents have been replaced B Defective speed control potentiometer C Main circuit board dial pot settings not correct If board has been replaced REMEDY Check potentiometer wiring for proper hookup See that speed pot is wired per electri cal diagram Check Potentiometer on control panel Check Petentiometer for 10 000 ohms Remove three wires from Traverse Drive Control red from term 8 white from term 7 black from term 9 Check all pot settings on circuit board as shown in wiring diagram See adjust ment section Traverse Motor Control Board Settings TRAVERSING REASON Wrong wire hookup effects traverse control Reversing red and orange wires to potentiometer the DC motor will run at zero speed but maximum will be too slow Reversing red and white wires does not affect speed control Traverse Drive Control Pin 8 to 7 Pot Full CCW Pot Full CW 0 VDC 9 75 VDC Pin 8 to 9 Pot Full CCW 9 75 VDC If Yes pot is O K If No go to step below Pot Full CW 0 VDC Check for 10 000 ohms red to white wires Full CCW 10 000 ohms Full CW 0 ohms Red to black wires Full CCW 0 ohms Full CW 10 000 ohms If Yes pot is O K If
39. ly from carton 2 Remove anvil on dial indicator Mount dial into the casting Remount anvil Adjust dial indicator so anvil can be fully depressed without touching the casting and tighten set screw in casting to firmly mount dial indicator to casting MALFUNCTION OF THE DIAL INDICATOR CAN OCCUR Mount the complete assembly to the machine or store Set Up Gauge Tool Tray in opening in the tool tray when completed See FIG 16 17 amp 18 DO NOT OVERTIGHTEN OR DAMAGE OR TOOLING BAR COMPONENTS All of the reel supports centers etc are mounted upside down on the tooling bar Reposition them right side up on the tooling bar at this time See FIG 19 amp 20 Tooling Bar Components Tooling Bar Components Right Side Up Upside Down FIG 20 ASSEMBLY INSTRUCTIONS Continued INSTALL DUST DEFLECTOR SHIELD Hang the shield on the dust collector Cut the nylon strapping holding the dust collector to the frame and remove the corrugated pad between the dust collector and the frame Dust Bag Dust Deflector ASSEMBLY INSTRUCTIONS Continued APPLY POWER BEFORE YOU APPLY POWER TO THE GRINDER REFER TO THE IMPORTANT GROUNDING INSTRUCTIONS ON PAGE 9 1 115 Volt Model Only Plug the control box power cord into a standard 115V AC 15 amp grounded receptacle See FIG 7 IT IS RECOMMENDED THAT MODEL 600 GRINDER HAS ITS OWN PERMANENT POWER CONNECTION FROM THE POWER The grinder is equipped with a low voltage rel
40. m the drive shaft Slide the actuator release lever out of actuator bar assembly by loosening the retainer shaft collar which preloads the holding spring See FIG 28 amp 29 The actuator mounting screw FIG 27 on the top side of the carriage base Remove the mounting screw to disconnect the linear actuator from the carriage Seal Plate Actuator Belsans Laver Slide the grinding head to the side exposing the actuator Remove the shoulder bolts holding the six bearings three on each side to the actuator block Remove the old bearings and discard them but save the inside washers and shoulder bolts Drive Shaft Inspect the hole from which the bearing and shoulder bolt were removed for foreign matter Clean thoroughly Wipe the drive shaft clean and dry IF OIL IS LEFT ON THE DRIVE SHAFT THE PULLING FORCE MAY HAVE TO BE SET TOO HIGH IN THE FOLLOWING PROCEDURE THIS WILL SHORTEN THE BEARING LIFE 7 Insert the shoulder bolts through the new bearings and through the inside washers saved in Step 6 Then install the complete bearing assemblies into the actuator block and tighten the shoulder bolts Actuator Engaged BE VERY CAREFUL NOT TO CROSS THREAD THE BEARING BOLTS 8 Slide the carriage over the actuator and line up the hole in the carriage with the tapped hole in the top of the actuator block Insert the actuator mounting screw through the self adjusting bearing and tighten the screw gt L Actuato
41. nobs Reel hub swinging locking clamps and vise chain clamps are to have sufficient tension REASON To prevent grinding head from moving The two adjusting arm locks will not hold the motor base rigid when locked down tightly To prevent grinding head from moving during grinding To prevent grinding head from moving during grinding When the supports are not held tight to the square tube the reel can move during grinding Loose centers effect grinding accuracy Clamps must be tight to prevent movement during grinding TROUBLESHOOTING Continued PROBLEN Reel ground ina concave convex shape or irregu lar shape POSSIBLE CAUSE H Carriage has varying load in either direction from grinding grit buildup inside of linear bearings I Rails not straight Check rail towards the reel side for straightness in the horizontal plane J Rails not straight vertical plane straightness of rails STRAIGHTNESS OF GROUND REEL REMEDY With linear actuator released from the carriage check for a 2 to 3 lb traversing load in both directions When there is a varying load or excessive noisy bearings have linear bearings replaced For more detail see replace carriage linear bearing in the adjustment section Use a three foot long precision straight edge and using a feeler gage check for a maximum of 002 in straight ness at the front edge of the front rail Consult factory
42. ol Board Assy Switch Toggle HES REV Rocker Switch DPST Pushbutton Stop Pushbutton Start Phil Pan Head Screw 10 24 x 1 25 Fuse 4 AMP Slo Blo Starter Magnetic Overload Lock Washer 10 INT Tooth Fuse Block Wire Assy 25F 25F W10 Wire Assy 25F 25F W12 Wire Assy 3 Loop W21 Wire Assy 6FK 6FK W18 Wire Assy 25F 25F W13 Wire Assy 25F 25F W14 Wire Assy 6FK 6FK W16 Wire Assy 6FK 6FK W23 Wire Assy 3 Loop W22 Wire Assy 25F 25F W24 Wire Assy 25F 6FK W28 Wire Assy 6FK 10RG W30 Wire Assy 6FK 6FK W15 Wire Assy FER 6FK W73 Wire Assy 6FK 6FK W09 Wire Assy 25F 25F W11 Wire Assy FER 6FK W74 Socket 8 pin Pot Assy Trav TSP W35 Fuse 3 AMP Slo Blo Pot Assy Spin SSP W36 Wire Assy 25F 6FK W29 Wire Assy 25F 6FK W19 Wire Assy 25F 6FK W20 Wire Assy 25F 25F W26 Wire Assy 25F 25F W27 Relay DPST 120 V Coil Wire Assy 25F 6FK W02 Wire Assy 6FK 6FK W17 Fuse 1 AMP Slo Blo Wire Assy 25F 25F W25 Kep Nut 10 24 Wire Assy 25F 6FK WO3 Prox Switch RH Trav W38 Prox Switch LH Trav W37 Wire Assy 6FK 6FK W39 PARTS LIST Continued 6009523 SPIN DRIVE ASSEMBLY PARTS LIST Continued 6009523 SPIN DRIVE ASSEMBLY DIAGRAM NO PART NO DESCRIPTION 3708391 Reducer 10 1 Ratio 6009197 Motor Electric 90 VDC 25 HP B251411 1 4 20 x 7 8 Socket Head Cap Screw Flange Coupler 50 Sleeve Coupler Flange Coupler 5 8 6009217 Adapter Drive Coupling C250620 SKSS CP PT 1 4 20 x 3 8
43. panel to receptacle Use 6 0mm Wire For 24 to 42 Meters from panel to receptacle Use 10 0mm Wire ASSEMBLY INSTRUCTIONS Continued FOR 220 V 50 or 60Hz applications Product No 6700951 should be ordered 6700951 includes a 2 KVA 220 Volt Step Down to 110 volt 50 60 Hz transformer which is prewired The wiring diagram is shown in FIG 8 The power cord has no connector A connector which is appropriate for your locality and 220 volt 8 amp application should be installed Use only a qualified electrician to complete the installation 3 Q WK H H H IMPORTANT GROUNDING INSTRUCTIONS In case of a malfunction of breakdown grounding reduces the risk of electrical shock by providing a path of least resistance for electrical current This Grinder has an electrical cord with an equipment grounding conductor and a grounding plug The plug must be plugged into a matching outlet that is properly installed and grounded according to all local or other appropriate electrical codes and ordinances Before plugging in the Grinder make sure it will be connected to a supply circuit protected by a properly sized circuit breaker or fuse Never modify the plug provided with the machine if it won t fit the outlet have a proper outlet and circuit installed by a qualified electrician ALWAYS PROVIDE A PROPER ELECTRICAL GROUND FOR YOUR MACHINE AN IMPROPER CONNECTION CAN CAUSE A DANGEROUS ELECTRICAL SHOCK IF YOU ARE UNSURE OF THE PROPER
44. r Released ADJUSTMENTS Continued TO REPLACE THE LINEAR ACTUATOR BEARINGS 9 Install the actuator release lever into the actuator bar Hold the drive shaft from rotating while you assembly Turn the actuator release lever counter check the pulling force clockwise 1 2 turn to engage the actuator Connect a spring scale so it pulls on the carriage parallel to the drive shaft Hold the drive shaft from rotating while you pull on the carriage See FIG 30 To overcome the actuator the pulling force should be 45 to 60 lbs 20 27 kg with 50 lbs 23 kg being ideal If not within those specifications the actuator tension must be adjusted See Adjusting the Pulling Force below Spring Scale EXCEEDING 60 LBS FORCE WON T GREATLY IMPROVE DRIVE PERFORMANCE AND IT WILL e SHORTEN THE BEARING LIFE Adjusting the Pulling Force If the pulling force is not within specification Step 10 above adjust it 1 With the actuator bearings engaged to the drive shaft readjust the two outboard screws with spring that hold the actuator together To reach these screws you must remove the actuator bar assembly See FIG 27 Turn each outboard screw an equal amount when resetting Turn clockwise for more tension iel Bema Check the force again repeat Step 10 above Continue adjusting and rechecking until within specification NOTE The factory adjusted position to reach tension specifications is to compress the spring until the
45. rating If your motor is frequently shutting down consult the factory The main control power source is for a 15 AMP supply circuit See machine set up for explanation Proximity Switch 3 16 in 11 32 4 75 mm 0 75 between sensing bracket and switch Proximity Sensing Bracket Manual Reset FIG 45 Overload Sensor Manual Auto Selector ADJUSTMENTS Continued SPIN GRINDING ATTACHMENT ADJUSTMENT If play develops so crank handle wants to rotate in the scissor action on the spin grinding attachment the play can be eliminated by tightening the set screw identified as item 24 on page 46 If there is too much play in the spin drive pivot points torque down the hex nut tight so conical washer is compressed then back off 1 2 turn GONICAL WASHER NYLOCK HEX NUT ALIGNMENT FIXTURE ADJUSTMENT in The body of the dial indicator should be flush with the D pe DIAL INDICATOR casting it is mounted in The anvil should be able to be BODY FLUSH depressed fully without touching the casting To adjust is properly loosen the set screw in the indicator mounting casting and adjust accordingly See FIG Tighten dial indicator set screw enough to lightly hold the indicator in place Never overtighten so plunger does not have free travel SET UP GAUGE ADJUSTMENT There should be no backlash in the fine adjustment screw on the set up gauge slide See FIG Adjust hex nut tight so conical washer is completely press
46. re is 22 in 5 5 mm clearance between the washer and the actuator block See FIG 31 Use this as a starting point unless you are already close to the specified tension When the tension adjustment is correct reinstall the actuator bar assembly and actuator release lever IF THE ACTUATOR RELEASE LEVER IS TIGHTENED TOO MUCH IT WILL CONTACT THE OUTBOARD SCREW HEADS AND OVERRIDE THEIR ADJUSTMENT WHICH COULD CAUSE A TRAVERSE MALFUNCTION O MAKE CERTAIN THAT YOU HAVE FULL ENGAGEMENT WHEN YOU REENGAGE THE ACTUATOR ADJUSTMENTS Continued TO REPLACE THE CARRIAGE LINEAR BEARINGS NOTE Set a small bench or table near the center front of the machine for use in the following procedure Remove the carriage bellows from the carriage Remove the actuator release lever from the linear actuator and remove the sholder bolt from the top of the carriage Remove the complete carriage assembly from the machine A Crank the carriage forward further until you expose the actuator mounting screw FIG 33 on the top side of the carriage base Remove the screw to disconnect the actuator from the carriage Remove the bolts which secure the front and rear carriage rails to the Grinder base six screws for each rail accessible from beneath the machine THE CARRIAGE ASSEMBLY WEIGHS ABOUT 40 LBS 18 KG IF NECESSARY GET HELP FOR THE FOLLOWING STEPS C Lift the complete assembly carriage carriage shafts vertical column and gr
47. roblem as it will be corrected in the subsequent steps STEP 3 With a clean rag wipe off the excess amount of lubricant from the shafts Run the carriage back and forth through its range of travel and wipe the shafts after each traverse Repeat until the shafts are dry to the feel This completes the lubrication process LUBRICATION FREQUENCY The lubrication frequency is to check the shaft monthly during grinder operation or more often if a squeaking noise is coming from the actuator If the unit will be shut down for an extended period of time more than two weeks then the shafts and other appropri ate parts of the unit should be flooded with lubricant and that lubricant left in place until the unit is brought back into service When the unit is brought back into service the full lubrication procedure as stated above should be repeated FEED SCREW LUBRICATION On a monthly basis spray a lubricant onto the vertical and horizontal screws and also the motorhead infeed and height adjustment screws ADJUSTMENTS TO REPLACE THE LINEAR ACTUATOR BEARINGS NOTE Never remove the linear actuator from the drive Screw under the rubber shaft Only remove the bearings from the actuator block CD splash guard Actuator Mounting 1 Crank the horizontal handwheel until the carriage is all the way forward toward the operator position 2 Turn the actuator release lever 1 2 turn clockwise to release the linear actuator bearings fro
48. s traverse grinding head 20 passes with no grinding head infeed Set traverse at slow speed on dial setting approxi mately 4 to 8 feet per minute range for final grinding sparkout NOTE This process refers to sparkout but what we are looking for is a near spark out approximately a 99 reduction in grinding spark from normal grind Do not run sparkout until you have no sparks because this could be an extremely extended period B Overhead clamps and Tighten down eight locking To eliminate reel movement fixture clamps are not holding hand knobs Four hand knobs during grinding mower unit tight for the square tube top and bottom clamps two knobs for the mower holding clamps and two knobs for the mower clamp swivel Check align ment of overhead clamp so there is no binding before locking down of hand knobs Use allen wrench for increased tightness of hand knobs C Square tubing tooling bar The pivot end is bolted station To eliminate reel movement for fixture holding is not rigid ary and must be tight On during grinding adjustable end tighten slide end locking handles one for vertical and one for horizontal locking TROUBLESHOOTING Continued PROBLEM Reel ground in a concave convex shape or irregu lar shape POSSIBLE CAUSE D Grinding wheel head moving E Gibs loose on carriage F DC drive motor shaft not concentric to drive shaft G Tooling bar support brack ets are
49. st the leveling feet as necessary to bring to level See FIG 6 Raise bellows and place a level across the front and rear carriage rails near the left end of the carriage bed See FIG 7 As viewed from the operator s position adjust the two 2 leveling feet on the left end of the machine as necessary to level the left end This adjust ment is critical to proper operation of your unit Raise bellows place a level across the two carriage rails at the right end of the machine and adjust to level See FIG 7 This adjustment is critical These two steps will level the machine from front to back as viewed from the operator s position When both front to back and side to side leveling procedures have been completed thread the hex jam nuts up against the nut that is welded to the bottom of the leg until they lock into place Be careful not to move the leveling feet during this process See FIG 1 Recheck with level after locking nuts are firmly tightened Snap the carriage bellows back onto car riage rails Carriage Boots Left End of Unit FAILURE TO PROPERLY LEVEL YOUR GRINDER OR BUMPING IT OR KNOCKING IT OFF LEVEL WILL oO ADVERSELY AFFECT GRIND QUALITY Front Carriage Rail ASSEMBLY INSTRUCTIONS Continued INSTALL OVERHEAD SUPPORT Mount the left and right overhead support end frames i 3 each bolt 2 3 4 to the main frame of unit with two 2 3 8 16 x 1 3 4 Z long lockwashers long hex head bolts and two 2 3 8 16
50. t board as shown in wiring diagram See Adjust ment Section Spin Drive Control SDC Board Setting See adjustment section for trim pot setting Readjust bearing preload for the reel Maximum torque load 25 in Ib to rotate reel When 250 female spade terminals are not tight remove and crimp slightly together When reinstalling push on pressure should have in creased for good contact Tighten down the locknut until it bottoms out and back off 1 2 turn Check to see if there is a cone shape to the washer Four 4 pivots points Loosen set screw and check See adjustment section SPIN DRIVE REASON Wrong wire hookup effects traverse control Wiper inside of potentiom eter controls speed Wiper may be bad and not making contact Red wire to White wire min FULL CCW 0 ohms max FULL CW 0 ohms Red wire to Black wire min FULL CCW 10 000 ohms max FULL CW 0 ohms Minimum and maximum pot settings effect traverse speed Original adjustment was not set properly Too much load on drive motor will cause motor to hunt and vary speed When connections are not tight the control board varies voltage to the DC motor which then varies speed When the conical washers are too tight it creates too much friction on the pivot points Have enough play so the crank turns snugly but during operation it is free TROUBLESHOOTING Continued ELECTRICAL PROBLEN Insufficient hesitation
51. t the large finger guide so that the corner of the wheel doing the grinding and the high point of finger guides are in the same location For more detail see relief grinding section in operating instruc tions of the manual Use smaller finger REASON The relief will be ground full length on the reel at the one end but on the opposite end it will drop off too soon and leave a band 3 4 75 long NOTE 3 4 is the same width of the grinding wheel Smaller finger will allow traversing complete length of reel NEUTRAL aH hee ro Y IL iy U3 7 OL im L2 ELECTRICAL SCHEMATIC 6009520 TRAVERSE DRIVE ASSEMBLY PARTS LIST PARTS LIST Continued 6009520 TRAVERSE DRIVE ASSEMBLY DIAGRAM NO PART NO PART NAME Grommet Support Rail Proximity Bracket Proximity Knob Star 5 16 18 Insert Switch Proximity 18 mm R H Pad Rubber B251017 Phil RHCS 1 4 20 x 5 8 K250001 1 4 SAE Flat Washer 1 4 20 Hex Nut Bracket Proximity Sensing 6009198 Motor DC 1 15 HP B251611 SKHDCS 1 4 20 x 1 1 4 Split Lockwasher Flexible Coupling 6009101 Carriage Drive Shaft K370001 3 8 SAE Flat Washer 3 8 Split Lock Washer B371201 HHDCS 3 8
52. the end frames Bolt gussets loosely to the overhead channel which is installed with the pulleys on top using eight 8 3 8 16 x 3 4 long hex head screws lockwashers and nuts Lift overhead channel into position and bolt to end frames using eight 8 3 8 16 x 3 4 long hex head screws lockwashers and nuts Align and securely tighten all nuts Attach winch to the left inside of the left vertical member as viewed from the operator s position with the crank handle facing to the rear See FIG 15 Install the winch mounting bracket two 2 3 8 16 x 2 1 4 long hex head cap screws and flatwasher lockwashers and nut The flatwasher goes over the winch housing slot Mount handle to the winch as per the winch instruction sheet Thread cable through the top middle hole in the channel and over both pulleys Install the cable to the winch per the winch instruction sheet The cable is reeled up by rotating handle in a clockwise direction as it is reeled up it makes a clicking sound The spring loaded handle actuates a brake when handle is released READ SEPARATE DIRECTIONS ON WINCH OPERATION AND MAINTE NANCE THAT IS INCLUDED IN THE WINCH ASSEMBLY BOX Place spreader bar with chains and hooks onto cable hook which has safety latch feature built in See FIG 14 DO NOT OVERLOAD THE WINCH CAPACITY WINCH CAPACITY IS A MAXIMUM OF 400 LBS ASSEMBLY INSTRUCTIONS Continued SET UP GAUGE ASSEMBLY 1 Remove the dial indicator assemb
53. the rear rail cu If you have difficulty obtaining the above alignment Rail check the straightness of the carriage rails see below NOTE The vertical and horizontal straightness of the rails is very accurately set at the factory so they are unlikely to be incorrect Rear Rail Drive Shaft MAY HAVE TO REALIGN THE MOTOR IF THE DRIVE SHAFT IS ADJUSTED YOU e SHAFT AND DRIVE SHAFT SEE ABOVE ADJUSTMENTS Continued POTENTIOMETER ADJUSTMENTS TRAVERSE DRIVE CONTROL TDC Min Speed Factory set at full CCW 8 30 Do not change this setting Right Traverse Forward Torque Factory set at full CW 4 30 Do not change this setting Left Traverse Reverse Torque Factory set at full CW 4 30 Do not change this setting IR COMP Factory set to 9 00 IR COMP is current l resistance R compensation COMP IR COMP adjusts the output voltage of the drive which balances load to motor RPM Regulation of a traverse motor may be improved by slight adjustment of the IR COMP trim pot clockwise from its factory set position Overcompensation causes the motor to oscillate or to increase speed when fully loaded If you reach such a point turn the IR COMP trim pot counterclockwise until the symptoms disappear Max Speed Set at 3 30 for maximum voltage of 90 Volts DC to the traverse motor When voltage is above 90 volts DC the traverse motor will start to pulsate and not run smoothly Right Traverse Forward Accelerat
54. tor Coupling in the adjustment section TRAVERSING REASON Misalignment of shaft support blocks to carriage traverse rod causes a bow in the rod This bow will cause an out of balance which in turn will cause it to whip at high traverse speeds Excessive bend in the shaft will cause the shaft to whip at high traverse speeds Side load at the shaft end will bend the shaft and cause it to whip at high speed traversing TROUBLESHOOTING Continued STRAIGHTNESS OF GROUND REEL PROBLEN Reel ground in a concave convex shape or irregular shape There are two methods of checking reel outside diameter straightness One method is by using a precision straight edge and the second method is using the reel set up gauge 1 Inspect the reel by using a precision straight edge to check straightness use a 002 maximum shim Use a 002 shim stock and check full length between straight edge and reel 2 Inspect the reel by using the set up gauge while mower unit is in the spin grinder see reel set up gauge instructions in operating instruction section PROBLEN POSSIBLE CAUSE REMEDY REASON See Above A Too heavy a grind on the Infeed the grinding head for For close tolerance in final grinding pass only approximately 002 stock roundness the sparking out removal in final two passes process is critical on final and let the grinding wheel grinding of a reel spark out For sparking out in grinding process alway
55. utput shaft and Flexible Motor the drive shaft inside the flexible coupling See FIG 39 To prevent drive shaft whipping at higher traverse speeds the two shafts must be aligned so they are concentric within 010 in 0 25 mm To align Loosen the two set screw in the coupling Remove the cover on the outside of the right leg Loosen the two bolts which secure the motor assembly to the leg Visually align the two shafts then tighten the motor mounting bolts Reinstall the leg cover Check that the spiral gaps in the flexible coupling are equally spaced then tighten the coupling set screws Check that the bearing support block is at 90 s to the drive shaft within 1 4 degree Use a precision square held against the bearing shoulder Cie H Traverse and the rear rail See FIG 38 dd Mo 0 12 to 0 50 in TO ALIGN THE DRIVE SHAFT ACTUATOR TO THE REAR RAIL The rear carriage rail and the drive shaft must be pre cisely aligned Bearing port aa 1 Loosen the two bolts holding the bearing support blocks at each end of the drive shaft FIG 40 iage 7 2 Align the drive shaft and rear carriage rail FIG 41 so j the distance between their facing surfaces is 3 375 in 010 85 75 mm 0 25 See FIG 41 Then tighten the support block bolts Check that the bearing support blocks are still at 90 to the drive shaft within 1 4 degree Use a ae hat precision square held against the bearing shoulder and
56. wheel spark out For sparking out in grinding process always traverse grinding head 20 passes with no grinding head infeed Set traverse at slow speed on dial setting approxi mately 4 to 8 feet per minute range for final grinding sparkout The spin drive to be towards the higher RPM See chart in Operating Instruction Section of the manual NOTE This process refers to sparkout but what we are looking for is a near spark out approximately a 99 reduction in grinding spark from normal grind Do not run sparkout until you have no sparks because this could be an extremely extended period Tighten gib screws to prevent movement Crank the motor slide base forward and adjust the gib screws Then crank the motor slide base all the way back to adjust the final gib screws Tighten up head mounting bolts that holds the head in a vertical locked position torque screw to 19 ft lbs There are five hand adjusting knobs to tighten The four on the base for the adjusting arm locks and one for grinding wheel vertical lock position Tow lower adjusting knobs on pivot of the adjustable arm lock do not need adjustment each time REASON For close tolerance in roundness the sparking out process is critical on final grinding of a reel NOTE For other trouble shooting see B thru K in section Problem Reel ground in a concave convex or irregular shape The rule of thumb is a higher spin drive RPM and a slower travers
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