RN30W Service Manual
Contents
1. e 18 TORQUE SPECIFICATIONS CHART e 19 CLUTCH INSPECTION 19 ISOMETRIC VIEW ee 19 RUFNEK BRAKE HYDRAULIC MOTOR amp CLUTCH POSITION 19 SEL 0046 001 DOC REV 0 WARNING FAILURE TO HEED THE FOLLOWING WARNINGS MAY RESULT IN SERIOUS INJURY OR DEATH The safety of the winch operator and ground personnel should always be of great concern and all necessary precautions to insure their safety must be taken The primary mover and the winch must be operated with care and concern for the equipment and the environment and with a thorough knowledge of the equipment and its performance capabilities must be understood These general safety guidelines are offered however local rules and regulations or national standards may also apply Recommended references are but not limited to ANSI B30 OSHA 1910 AWS D 14 3 and SAE J706 Additional information can be found at http Awww team twg com TulsaWinch Indicates an imminently hazardous situation A DANGER which if not avoided will result in death or serious injury Indicates a potentially hazardous situation which WARNING if not avoided could result in death or serious injury Indicates potentially hazardous situation which A CAUTION if not avoided may result in minor or moderate injury or property damage Indicates information or a company policy that2. The brake is out of adjustment or worn Adjust brake until load doesn t drift Replace the parts as required Low flow rate Check the flow rate and increase if necessary Load drifts a Winch runs too slow a e Hydraulic motor worn out Replace the motor Winch not mounted squarely Check mounting and confirm that the winch is mounted on a level surface Cable drum won t free spool a Clutch not disengaged Disengage the clutch Hydraulic fluid leaks from the vent Damaged motor shaft seal Replace the gearbox the seal Winch won t pick up heavy loads a Too much cable on the drum Use the snatch block or remove some cable from the drum gt System pressure too low Increase the hydraulic system pressure Winch not broke in Run winch at half of rated load for several pulls lt gt BILL MATERIAL BOM DATED SEPTEMBER 2005 SEQ QTY P N DESCRIPTION 1 3 20517 PIN 2 1 32842 BUSHING 3 4 20266 CAPSCREW 4 5 21128 GREASE ZERK 5 1 20053 END CAP 6 1 20256 BRACKET 7 1 20129 BRACKET 8 1 1741 BRAKE BAND ASSEMBLY 9 2 20515 SET SCREW 10 2 20096 WASHER 11 1 20262 SLIDING CLUTCH 12 1 23598 DRUM CLUTCH 13 6 20407 CAPSCREW 14 1 23595 DRUM 15 1 21154 U BOLT 16 5 20270 CAPSCREW 17 2E 18 19 8 20518 LOCKWASHER 20 9
3. A Inspect the carriers 72 for damage B Inspect the gear 75 for excessive wear or damage See page 13 for detailed instructions C Inspect the keys 70 bushings 69 for damage D Inspect the worm 57 for excessive wear or signs of heat checking or cracks E Inspect the bearings 54 and seals 55 for excessive wear or damage GEAR INSPECTION INSTRUCTIONS Check gear wear by removing the cover and visually inspecting the bronze gear If the gear is worn such that there is no visible land on the throat of the gear between the gear flanks as shown in picture above the gear should be replaced 1 ASSEMBLY GEARBOX ASSEMBLY Press the bearings 54 onto the worm 57 then install the worm and bearings into the housing 61 For winches driven by a hydraulic motor Press a new oil seal 55 into the motor adapter 112 Install the gasket 52 Attach the motor adapter 112 to the housing 61 with six capscrews 89 using gasket 52 Install the motor 116 with two capscrews 114 and washers 115 using gasket 113 For winches driven by a PTO sprocket and chain Press a new oil seal 55 into the end cap 51 Attach the end cap 51 to the housing 61 with six capscrews 56 using gasket 52 Install the keys 58 into the output shaft 68 4 Slide the carrier 72 over the keys 70 Install the spacer 73 using the two pins 74 Slide the gear 75 and t
4. HAND GEAR 750 1 21642 LEFT HAND GEAR 76a 1 20127 MODEL 34 COVER 760 1 44030 RUFNEK 30 COVER 77 1 26799 BREATHER BILL OF MATERIAL CONTINUED SEQ P N DESCRIPTION 78 4 20268 CAPSCREW 79 2 20326 GASKET 80 10 20519 LOCKWASHER 81 10 20273 NUT 82 1 20279 KEY 83 1 29503 BRAKE DRUM 84 1 20115 LOCKWASHER 85 1 20114 LOCK NUT 86 2 1733 BRAKE SHOE 87 1 3568 CAM PLATE 88 1 43962 BRAKE HOUSING 89 16 40546 CAPSCREW 90 1 44050 OIL SEAL 91 1 43964 BRAKE HOUSING 92 1 25519 KEY 93 1 44151 O RING 94 8 20522 CAPSCREW 95 1 13050 BREATHER 96 1 43966 BRAKE COVER 97 1 41406 ADJUSTING NUT 98 1 43960 SPRING PLATE 99 1 41411 O RING 100 2 21684 PLUG 101 1 44150 DRIVER 102 1 44145 RETAINING RING 103 6 33564 FRICTION DISC 104 11 44141 STATOR PLATE 105 1 33559 SPRING 106 1 29084 RETAINING RING 107 1 33565 CAM CLUTCH 108 1 44142 COUPLER 109 1 12208 BUSHING 110 1 20118 GASKET 111 1 4362 YOKE ASSEMBLY W POSITION INDICATOR 112 1 40432 MOTOR ADAPTER 113 1 40147 GASKET 114 2 13529 CAPSCREW 115 2 41000 WASHER 116 1 40275 MOTOR 117 1 996547 OIL SEAL 20 TORQUE SPECIFICATIONS CHART Dry Plated Lubricated Dry Plated
5. 20267 NUT 21 5 20521 NUT 22 1 20958 SPRING 23 16 20526 LOCKWASHER 24 15 20271 NUT 25 1 20112 ROD 26 2 20522 CAPSCREW 27 1 20094 ARM 28 1 20054 CLEVIS 29 4 20617 WASHER 30 4 28578 CAPSCREW 31 1 21365 HOUSING 32 1 20514 COTTER PIN 33 1 939243 CLEVIS PIN 34 2 20070 ARM 35 2 20282 SHAFT 36 a OMIT 37 4 20193 SET SCREW 38 4 20230 COLLAR 39 1 20264 40 2 24724 RING 41 1 20116 BILL OF MATERIAL CONTINUED SEQ QTY P N DESCRIPTION 42 2 20737 SET SCREW 43 2 20474 44 1 20111 RIGHT HAND ROD 44b 1 20113 LEFT HAND ROD 45 1 20072 ARM 46 10 20276 CAPSCREW 47 1 20284 BRACKET 48 4 20105 KEY 49 1 20278 CAPSCREW 50 1 20092 WASHER 51 1 21542 CAP 52 2 20118 GASKET 53 1 23875 54 2 20303 BEARING 55 2 20281 SEAL 56 16 30205 CAPSCREW 57 1 21641 RIGHT HAND WORM 34 570 1 21640 LEFT HAND WORM 34 57C 1 44068 MECHANICAL WORM RN30 57 1 44070 HYDRAULIC WORM RN30 58 1 25393 59 8 939262 CAPSCREW 60 2 32840 BUSHING 61 1 21556 HOUSING 62 8 20520 LOCKWASHER 63 8 20274 NUT 64 3 20286 PIPE PLUG 65 1 939269 LEFT FRAME 66 1 20293 RIGHT FRAME 67 2 20098 KEY 68 1 22443 SHAFT 69 2 32839 BUSHING 70 2 20574 KEY 71 10 21157 CAPSCREW 72 2 22438 CARRIER 73 1 20569 SPACER 74 2 164056 75a 1 21643 RIGHT
6. AFT THE CLUTCH aco ae EXCESSIVE EDGE WEAR ON BOTH THE SLIDING CLUTCH AND DRUM CLUTCH REPLACEMENT CRITERIA ROUNDED FACE WARNING IF 1 4 OF THE SURFACE OF THE FACE ON THE SLIDING CLUTCH OR DRUM CLUTCH IS ROUNDED OR HAS NO REVERSE DRAFT THE SLIDING CLUTCH AND OR DRUM CLUTCH MUST NO REVERSE DRAFT BE REPLACED ON THE SLIDING O DRUM CLUTCH 22 FOR RUFNEK BRAKE AND HYDRAULIC MOTOR SEE PAGE 24 23 RUFNEK BRAKE HYDRAULIC MOTOR amp CLUTCH POSITION INDICATOR RUFNEK OIL BRAKE CLUTCH POSITION INDICATOR KIT HYDRAULIC V 6 MOTOR VIEW S al 115 24
7. EMBLY 1 6 FRICTION DISCS ITEM 103 Press the oil seal 90 into the brake housing 91 Attach the brake housing to the gearbox with eight capscrews 89 using gasket 110 Install the key 92 and coupler 108 onto the worm Next install the clutch driver assembly Items 93 101 106 and 107 onto the coupler 108 With the retaining ring 93 on the clutch driver 101 Install the stator plates 104 and friction discs 103 as shown below 11 STATOR PLATES BRAKE DRIVER ITEM 104 101 1 INS 4 5 Install the spring 105 Install the adjusting nut assembly assembled items 97 98 and 99 into the brake cover 96 and attach the brake cover to the housing 91 with eight evenly installed capscrews 94 Install the drain plug 100 into the bottom of the brake cover 96 Fill gearbox and brake with proper oil Refer to winch maintenance section of this manual for oil type and amounts Adjust the brake using the procedure on page 8 of this manual CLUTCH AND DRUM ASSEMBLY 1 Install bushings 60 into drum 14 3 Install the sliding clutch 11 and end Install the drum 14 onto the output bracket assembly onto the shaft 68 shaf
8. Lubricated SAE SAE SAE SAE SAE SAE Grade 5 Grade5 Grade5 Grade 8 Grade8 Grade 8 Nominal Size bn pode bow bow TONNE Lbs Ft Lbs Ft Lbs Lbs Lbs Ft Lbs 1 4 20 8 6 5 12 9 7 1 4 28 10 7 6 14 10 8 5 16 18 17 13 10 25 18 15 5 16 24 19 14 11 27 20 16 3 8 16 31 23 19 44 33 26 3 8 24 35 26 21 49 37 30 7 16 14 49 37 30 70 53 42 7 16 20 55 41 33 78 58 47 1 2 13 76 57 45 106 80 64 1 2 20 85 64 51 120 90 72 9 16 12 109 82 65 153 115 92 9 16 18 122 91 73 172 129 103 5 8 11 150 113 90 212 159 127 5 8 18 170 128 102 240 180 144 3 4 10 266 200 160 376 282 226 3 4 16 297 223 178 420 315 252 7 8 9 430 322 258 606 454 364 7 8 14 474 355 284 668 501 401 1 8 644 483 386 909 682 545 1 14 721 541 433 1019 764 611 1 1 8 7 794 596 475 1288 966 772 1 1 8 12 890 668 534 1444 1083 866 1 1 4 7 1120 840 672 1817 1363 1090 1 1 4 12 1241 930 745 2012 1509 1207 T BOLT TORQUE LB FT T KWD 12 TORQUE COEFFICIENT K20 20DRY K 0 15 PLATED K 0 12 LUBRICATED W PRELOAD TENSION D NOMINAL BOLT SIZE IN ALL TORQUE VALUE TOLERANCES ARE 5 21 GOOD CORRECT REVERSE DRAFT ANGLE THIS PICTURE ILLUSTRATES A SLIDING amp DRUM CLUTCH WITH THE PROPER REVERSE DRAFT AND MINIMUM EDGE WEAR MINIMAL EDGE WEAR BAD NOTICE NO REVERSE DRAFT REVERSE DRAFT ON THE SLIDING OR ENSURES THE CLUTCH DRUM CLUTCH STAYS ENGAGED DURING PAY IN WITHOUT THE CORRECT DR
9. NOTICE relates directly or indirectly to the safety of personnel or protection of property Mounting Winch mounting must be secure and able to withstand the applied loads The stability of the mounting system must be approved by a qualified person All welding should also be done by a qualified person Winch mount must be flat so as not to induce binding The flatness must not exceed 1 16 inch across the mounting surface of the winch itself Guards must be placed on all open drives in the case of mechanical winches Insure that all hydraulic hoses valves and fittings are rated to winch manufacturer s operating pressures Relief valves should be set to winch manufacturer s specifications Insure that all PTO s and drivelines are sized appropriately for the winch manufactures speed and torque specifications Operator Must read and understand the operating and service manual Both the SERVICE MANUAL and OPERATING AND MAINTENANCE MANUAL are available online at http www team twg com TulsaWinch Must never lift or move people with this winch This winch is not designed or intended for any use that involves moving people Must stay clear of the load at all times Ground personnel should remain a safe distance from the load and winch cable at least 1 1 2 times the length of cable measured from the winch to the load Must stay clear of the cable at all times A broken cable can cause serious injury or death Must av
10. ble Spooling D Double O Over Drum T Triple U Under D Worm Angle d bid Renae L Left viewed from rear of truck R Right Input Shaft Location Gearbox Location F Front L Left R Rear R Right X Does not apply viewed from rear of truck viewed from rear of truck Tulsa Winch worm gear winches require regular maintenance to ensure safe and reliable operation Regular oil changes with the correct oil for the ambient temperature conditions and an annual inspection of the wear components strongly recommended Maintenance Scheduling The owner is to ensure proper inspection intervals in compliance with the API RP 2D Section 4 ANSI B30 5 5 2 3 or ANSI B30 7 7 2 1 and will review winch usage categories on a periodic basis A qualified inspector should perform all maintenance and inspections USE API RP 2D RECOMMENDED HRS PER INSPECTION SCHEDULE MONTH 0 10 PRE USE ANNUAL 11 50 PRE USE QUARTERLY 514 PRE USE MONTHLY Oil Maintenance The oil in the gear and brake section should be changed every 1000 hrs or 6 months of normal usage e Tulsa Winch recommends that the oil level in the gearbox be checked and adjusted as part of the pre use inspection If the oil level drops frequently or oil leakage is detected during an inspection maintenance should be performed to correct any problems GEARBOX OIL CAPACITY z 3 QTS e Gearbox oil level inspection is achieved by removing the oil level insp
11. ct the brake drum 83 for severe wear or scoring C Check the inside lower part of the brake housing 31 for the presence of oil Replace the seal 55 if oil is present NOTICE If replacing the seal 55 first drain the oil from the gearbox then remove the capscrews 56 and brake housing 31 CLUTCH AND DRUM DISASSEMBLY 1 Remove the Remove the rod 44 by removing the cotter keys 48 Remove the arms 34 by removing the capscrews 46 nuts 24 and washers 23 holding the arm in place line shafts 35 by loosening the set screws in the collars 38 and the setscrews 42 in the arms 45 amp 27 Remove the capscrews 59 nuts 63 and washers 62 attaching the end bracket 6 to the frames 65 amp 66 Remove the end cap 5 by removing the four capscrews 3 nuts 20 and washers 19 Remove the end bracket 57 yoke assembly items 7 16 19 20 39 40 41 or clutch position indicator assembly 109 and sliding clutch 55 Remove the keys 67 and collar 10 from the shaft 68 by loosening set screw 9 Remove the brake band assembly 8 by loosening the nuts on the rod 21 to remove tension on the spring 22 Then remove the cotter key 32 amp pin 33 attaching clevis 28 to control arm 27 Finally remove the capscrews 16 washers 23 and nuts 24 attaching the brake band to the frame 9 Slide the drum 14 off of th
12. e output shaft 68 using an overhead hoist 10 Inspect parts as follows replace if necessary A Inspect the bushing 2 in the end bracket 6 for excessive wear Inspect the keys 67 sliding clutch 11 and collar 10 for damage See page 22 for clutch inspection C Inspect the brake band 8 and verify the band and lining is at least 225 in thick D Inspect the drum bushings 60 for wear or damage E Inspect the line shafts amp linkage for excessive damage or wear GEARBOX DISASSEMBLY 1 Supporting the end of the shaft 68 remove the cover 76 by removing capscrews 46 and 78 nuts 20 and 24 and washers 19 and 23 Lift the shaft 68 bushings 69 keys 70 and gear assembled items 71 72 73 74 75 80 and 81 out of the housing 61 Remove the bushings 69 from the shaft 68 Remove the gear 75 from the carriers 72 by removing the twelve capscrews 71 nuts 81 and washers 80 then pull the carrier 72 off of the shaft 68 Finally remove the spacer 73 carrier 72 and keys 70 Remove the worm 57 from the housing 61 by removing either the motor 116 and motor adapter 112 or just the end cap 51 depending on the type of drive 5 From the brake end push the worm 57 out of the housing 61 If the brake has not been removed see brake disassembly on page 9 or 10 Inspect parts as follows replace if necessary
13. ection plug and visually inspecting the oil level Minimum oil level is to the bottom of the threads of the inspection hole Refer to the chart below for the recommended oil type and grade for your application WORM GEAR WINCH PREVAILING AMBIENT TEMPERATURE 10 20 50 40 50 60 70 80 90 100 110 120 130 F SAE 140W AGMA 7 EP F 40 30 20 10 0 x REER MOBIL SHC 626 7 C 40 All oils must meet MIL PRF2105E standards Substitution from a reputable manufacturer is allowed as long as type and grade are maintained GEARBOX FILL VENT GEARBOX OIL LEVEL P e m y GEARBOX R OIL DRAIN FILL VENT BRAKE OIL DRAIN BRAKE OIL LEVEL BRAKE ADJUSTMENT In general worm brakes on Tulsa winches should be set to hold the load you currently working with Excessive brake torque will result in excessive heat generation and brake wear The best way to insure proper brake adjustment is to pull the cable tight against the load and stop to ensure the brake holds If it doesn t tighten the brake slightly and try it again If the brake doesn t respond to adjustment the brake must be serviced If the input to the winch is accessible and a tor
14. ed for function to avoid confusion e Insure that the PTO is disengaged when the winch is not in use e All winch controls must be located to provide the operator with a clear view of the load e The clutch must be inspected daily for proper operation e The winch cable should be inspected daily for serviceability minimum of five wraps of tightly wound cable must remain on the drum GENERAL INFORMATION INTRODUCTION AND THEORY OF OPERATION The Tulsa worm gear winch is operated by turning the input of the worm using a hydraulic motor or PTO driven sprocket and chain The winch utilizes the adjustable spring applied multiple disc oil brake that activates only during pay out to provide maximum efficiency during pay in The torque is transferred from the gearbox through the drum shaft which is keyed to a mechanically actuated sliding clutch that when engaged transfers the torque to the drum ASSEMBLY NUMBER EXPLANATION This manual is for design series 001 the case of a major design change implementation a new design series designation number will be issued for the winch A new manual will also be created for that specific design series DESIGN ASSEMBLY SERIES 69216 001 WINCH BREAK IN Winches like any other kind of machinery require a break in to perform well and to maximize their life The following guidelines should be used in the break in of Tulsa Winches Use extreme care when first spoo
15. he other carrier 72 onto the shaft and secure with eighteen capscrews 71 nuts 81 and washers 80 Install the assembled gear onto the shaft 68 Slide the bushings 69 on to both ends of the shaft 68 Install the output shaft assembly into the housing 76 Install both gaskets 79 onto the housing Attach the cover 76 to the housing 61 using capscrews 46 amp 78 nuts 19 amp 20 washers 19 amp 23 using gaskets 79 Fill the gearbox and brake with the proper oil Refer to the maintenance section of this manual for correct oil type and amount MODEL 34 BRAKE ASSEMBLY UN Press the oil seal 55 into the brake housing 31 Attach the brake housing 31 to the gearbox with six capscrews 56 using gasket 52 Install the brake drum 83 and key 82 onto the worm shaft 57 Secure the brake drum with the nut 85 using the lock washer 84 Bend two tabs of the washer 84 over the flats of the nut 85 If removed reattach the cam 53 to the brake cover 87 in the orientation needed for your application using two capscrews 26 and washers 29 TIGHTEN TIGHTEN RIGHT HAND BRAKE LEFT HAND BRAKE Install the brake cover 87 cam 53 and brake shoes 86 into the brake housing 31 Secure the brake cover 31 using four capscrews 30 Adjust the brake using the procedure on page 8 of this manual RUFNEK 30 BRAKE ASS
16. ling cable onto the winch DO NOT run the winch at high speeds when performing this operation Make sure that the cable is payed out in a straight line to prevent kinks and SLOWLY pay in the winch to install the cable DO NOT exceed one half rated load or one half rated line speed for the first thirty minutes of operation This will insure that the worm and gear have an opportunity to wear in properly Periodically check the gearbox for temperature rises and allow the winch to cool down between pulls Worm gear winches are designed and intended for intermittent duty application only using them in extremely long pulls may generate excessive heat and shorten the life of the winch MODEL CODES NOTICE RN3O WMRF OM X THE RUFNEK 30 SERIES WINCHES ARE ONLY AVAILABLE WITH LEFT HAND GEARS Motor Type Gear Type 1 Single Speed Gear Motor W Worm 2 Two Speed Gear Motor P Planetary 3 Single Speed Geroler Motor Drive Type 4 Two Speed Geroler Motor H Hydraulic 5 Piston M Mechanical 6 Vane Gearbox Position L Left X No Motor R Right Clutch Device viewed from rear of truck M Mechanical Input Shaft Location A Air Paroni Cable Spooling Drum X Does not apply U Under Drum viewed from rear of truck viewed from rear of truck M34 SLRF ODCL Winch Type Motor Type M Mechanical ynn H Hydraulic Motor Mount G Speed Reducer D Direct Mount No of Worm Starts X No Motor S Singl nge Ca
17. ms Tulsa Winch DESIGN SERIES 001 GENERAL ___ 4 INTRODUCTION AND REOR IOP ETATE 4 ASSEMBLY _ 4 WINCH cem E 4 MODEL CODES 5 06 2 2 6 OIL LEVELS TEE eo 7 BRAKE ADJUSTMENT N W o 8 DISASSEMBLY 2777 1 42 9 7 9 34 5 5 2 10 CLUTGCELANBIDBIUMIDISASSEMBIBY 11 GEARBOX DISASSEMBLY sfeer 12 GEAR INSTRUCTIONS PR 13 ASSEMBLY 14 GEARBOX ASSEMBLY NN 14 2 000 15 RUFNEK 30 BRAKE ASSEMBLY 15 CLUTCH AND DRUMIASSEMBLY 96 19 10 0 0 16 530222 17 BILL
18. ng the brake cover The cover is spring loaded against the cover screws Evenly remove the capscrews 94 from the brake cover 96 Remove the spring 105 Remove the brake driver 101 along with the brake components 93 103 104 106 and 107 5 Inspect parts as follows replace if necessary Inspect Inspect the friction discs 104 for uneven excessive wear Friction discs should measure no less than 055 in thick Inspect the stator plates 103 for warpage or excessive damage the spring 105 for damage or discoloration Cam clutch 107 should be free of debris and have all cams intact NOTICE If replacing the cam clutch 107 take note of the direction it locks up for reassembly Check coupler 108 for signs of pitting spalling or excessive wear MODEL 34 BRAKE DISASSEMBLY 1 2 Loosen the capscrews 26 Remove the capscrews 30 from the cover 87 Remove the cover 87 from the brake housing 31 Remove the brake shoes 86 Remove the nut 85 and washer 84 Use the two threaded holes in the brake drum 83 and a gear puller to remove the brake drum mam 22 DII 7 Inspect parts as follows replace if necessary A Inspect the brake shoes 86 for wear If the shoe linings are worn flush with the rivet heads they must be replaced B Inspe
19. oid shock loads Shock loads can impose a strain on the winch that can be many times the design rating Must be aware of the fleet angle of the winch All loads should only be pulled with the load line perpendicular to the drum shaft this is to avoid excessive stresses on the winch and will help prevent the cable from building on one side of the drum flange Must wear personnel protective equipment PPE if required Check the local state and federal regulations for compliance Must insure that the drum clutch is fully engaged before hoisting A visual inspection of the drum clutch engagement is required before each winching operation Must rig all loads secure before winching Pull the load line taut and inspect the condition of load for stability Must inspect the drum brake if equipped The drum brake is not a load holding device it is design to prevent over spooling of the drum and causing bird nesting of the cable on the drum Inspect the brake for wear of the lining and the actuation method Must inspect the load control brake These winches can be equipped with two 2 forms of dynamic braking The worm brake is one method and is adjustable for pay out load control Before a load is handled the load should be pulled tight and stopped to check this brake The second method is a hydraulic lowering control that is not field adjustable The same method should be used to check this brake Operation e All winch controls must be well mark
20. que wrench can be adapted to it the brake can be set with a torque wrench The Model 34 brake is shipped from the factory pre set at 70 Ft Lbs ADJUSTABLE SHOE BRAKE TIGHTEN TIGHTEN RIGHT HAND BRAKE LEFT HAND BRAKE To tighten the brake loosen the two capscrews in the slotted holes and rotate the brake in the direction shown If the brake needs to be reversed remove those same two capscrews rotate the cam 60 degrees and reinstall the capscrews in the other set of holes which have just been revealed After adjustment be sure to re tighten the cam capscrews securely ADJUSTABLE MULTIPLE DISC OIL BRAKE RN30W This style of brake can be adjusted by turning the hex adjuster counter clockwise to increase brake and clockwise to decrease brake The direction of braking for all multiple disc brakes can be changed by removing the cam clutch turning it over and re installing it For detailed service instructions contact your Tulsa Winch distributor or the factory If the input to the winch is accessible and a torque wrench can be adapted to it the brake can be set with a torque wrench The RN30W brake is shipped from the factory pre set at 70 Ft Lbs 1 DISASSEMBLY RUFNEK 30 BRAKE DISASSEMBLY Remove the bottom drain plug 100 to drain oil from brake Loosen the spring tension inside the brake by rotating the adjusting nut 97 clockwise until it stops CAUTION Extreme care should be taken when removi
21. t 68 lining up the yoke with the grooves in the sliding clutch 11 Attach the 2 Install the collar 10 Tap the keys end bracket to the frame using four 67 into the output shaft capscrews 59 washers 62 and nuts 63 CLUTCH POSITION INDICATOR ADJUSTMENT FOR RUFNEK WINCHES ONLY Make sure that the sliding clutch 11 is fully engaged and that the yoke assembly 111 is not binding on the drum clutch The lugs of the yoke MUST be centered in the groove with the clutch fully engaged in order for the clutch position indicator to be properly adjusted See FIG 1 The switch is a normally open electrical switch that is actuated by disengaging the clutch which closes the circuit With the clutch fully engaged adjust the switch in until the warning device is activated then back out 1 4 turn to deactivate the warning device Tighten the jam nut against the clutch bracket to secure the adjustment Test the switch by fully engaging then disengaging the clutch The warning device should activate while disengaging the clutch pivoting no more than 3 SWITCH TROUBLESHOOTING FAILURE PROBABLE CAUSE Clutch handle won t latch a Clutch jaws aren t aligned Align the jaws by rotating drum E Damaged yoke or linkage Replace the yoke or clutch Seal damaged or worn Replace the seal s Cil leaks from housing a Too much gearbox oil Drain excess oil e Gasket is worn Replace gasket
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