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AMERICAN Hydraulic Scissor Lift Service Manual
Contents
1. Soienoid Lowering Valve 1 A Cioe de NNNM BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com Liar ENEE a m a m m ni ULI LE A 115 17115 1Xy wir KEVIN rude Reef mu SEP EO imo ww Reference Guide MM 500 M 1000 B M 1070 1C M 1070 M 1170 M 1202 M 1223 nun 1 TEE rn roe Ee POET a I EE AAA Base Standard Price Litt litt CoHapsued Frame Platform Mode Shipping Ref No Capacity Travel Height Size At Weight 1 5004 25 E 12 x 2h 12 x 95 MM 500 200 D 1000 30 BU iosa 34 16 x 344 Me 1000 8 300 3 18008 487 s amp AA a 497 247 x S2 M 1070 1C 485 7 77230008 TT e ATA 4102 18 x 42 M 4070 425 8 20004 060 TT 23 x 694 38 x 72 M 1170 2D 1115 EE 20004 104 23 x 8 24 x 78 5 M 1170 9R 1700 11 30004 84 107 317 x 84 48 x 98 M 4176 2K 2950 NE 30008 48 1 28 x 59 Z x 60 M 1170 2 330 12 30007 807 8 RB x 69 38 x T2 1170 21 1295 27 30004 60 9 x 94 48 x 96 M 120 3K 2200 5 4o004 36 SI E x4 16 x 49 M 1170 2A 740 6 a o6s 36 T ag x arr dd x aa M 1170 28 170 48 400p 36 ST Wi x 687 327 x 617 M 1202 3A 1210 24 49004 42 8 Go x TO SR x T2 M 1202 3F 1475 io 40008 48 294 x 89 BAF BOM 870 23 1085 20 ADDOs 46 Si 30 x 827 38 x 647 W 7202 38 1575 15 4000 72 10 D x 76 367 x 847 M 1170 2P 2825
2. irs All MILII drive anghor boits into holes so that Ke e a minimum of six to seven threads are helow the top surface of the anchor cips 3 Tighten nuts securely be sure enough force is used to spread anchor bolt wedges Usually 3 or 4 turns beyond finger tight A WX Ww AA Bh After lift has been aligned leveled and shimmed and anchor bolts have been instalied pour 1 ot grout under entire base frame When set and cured tighten nuts Or anchor bolts Run hydraulic hose or electrical cord through conduit in pit wall Replace platform Page 3 Ettel limit BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com TROUBLE SHOOTING SERVICE SUGGESTIONS 4 M lift will not raisa a Check electric circuit pump motor starter if provided On new installations of 3 phase motors if lift does not start raising in approximately 10 seconds reverse line leads to reverse pump rotation Rotation should be CCW looking at shaft of pump WARNING DO NOT RUN PUMP BACKWARDS b Check oil level WARNING Do not overfill With lift in full up posltion oil lavet should be a minimum of 1 4 above tank bottom with pump unit contained within the ift base a Lift reises slower than specified rate or will raise only partial load Note Allowance must be made for slight speed variations due to temperature which changes the viscosity of the hydraulic oll a Check line voltage under inad condition Low volta
3. 13 46808 647 197 si x Bd 26 AT M 3000 HK 33 Sod Go 9 3i x 94 48 x db M1202 9E 2430 4i 8450s ge aen 44 xi327 Mel223 4i 3700 9 60004 36 en 337 x 4 289 x a W iiTO E 950 3i 6860s 36 E 31 AB 32 x 61 M 1202 3C 1330 38 000 42 30 x 707 867 x 72 M 12023G 1700 22 0004 de 8 317 x 62 36 x 64 M 1202 3D 1950 14 60004 0687 10 3i x TO 36 x 72 M 1170 2N 2275 28 60004 60 gi 31 x 94 d x gb M 1202 3J 2450 dr B s 107 32 vm 447 xir ee 782 80004 367 107 34 x 947 307 x 90 KO es 26 80004 g 10 42 x 847 48 x 967 1202 31 2500 38 8004 42 AET 3T M M 12294G 2788 29 80004 467 fo 42 xaz da x 96 M 1202 3M 3125 E 0004 48 1 34 xia 36 x1207 Mina 2860 39 9000s ad 10 42 m 46 xi32 M 1223 4H 3650 78i 100004 42 10 427 x 70 46 x 96 M 1202 3P 3050 de 1080064 69 10 42 An 4A vs M 1223 4M 4330 a 160884 727 A8 ZE uf O au M 1223 5R 6356 17 20004 aar ig 34 x 54 36 x 60 M 1170 7A 2175 33 fo0004 S 10 Si x pale 96 x 96 M 1223 4B 2500 80 77420604 35 ap 42 x 64 we x 96 M 1202 3N 2900 40 120008 427 19 d r x402 44 x1047 M 1223 4K 3225 ia 130004 48 19 34 x 59 487 x 80 M T170 7C 2460 35 t de 46 40 42 vi gan xig Me t223 4D 3480 36 120008 60 10 42
4. n 44 xi92 M 1223 4E 4150 43 160004 36 127 42 x BA 48 x106 M 1223 5A 4700 ae 180009 48 12 42 x119 487 x20 M 1223 5C 5360 48 200004 427 12 42 xiao 46 xi44 M 1223 5G 5990 44 240004 387 Di 42 Ba 487 Of M 1229 58 4700 TORKLIFT T1 Series ett ete AIR COL OVERALL MOTOR H AHP SHIPPING LAPSED VERTICAL EXTENDED FRAME STANDARD TRAVEL TIME WEIGHT MODEL CAPACITY HEIGHT TRAVEL HEIGHT SIZE DECK SEE NO OF APPROX MN ILES HNCHES NHL ME INCHES ei AE RAMS Miz scc LBS The 2 000 6 d 42 256 x bia 32 x 61 2 int 5 25 TOO TI 6 2 2 000 934 72 671 34 47 x 106 468 x 110 2 Ext 1 235 2300 Ted 4 00 B 38 44 24 x 59 ge x 61 2 ini da 49 1000 TE6 4 4000 17 Te 63 47 x108 46 x 110 4 Ext 3 36 2500 Ti 3 B 6 000 1154 36 ails 28 x 591 32 x 61 2 inti 44 20 700 tk4 6 000 10 46 5634 34 x T5 38 x 84 Ext 3 34 2408 Tl 6 6 6 000 1753 f2 043 47 x 108 46 116 2 Ext 3 46 3400 13 4 B 6 000 LE 46 6114 34 x 76 36 x dd 2 Ext 3 36 3400 Ti2 16 0 000 T4 38 5074 35 x 5915 46 x 66 2 Ext 3 30 2600 Th4 16 16 000 16 46 64 46 x 76 db x 64 a Ext 3 35 3600 41420 20 000 155 46 63 35 x 76 48 x 84 4 Ext 5 40 4665 TH 30 30 000 1712 30 ATI 34 x G2 36 x 72 4 Ext 5 30 3200 Informstion on other modals available upon request eemale mms
5. OR IDENTIFICATION OF NUMB gg PLEASE REFE BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com M 1223 Series Torklift T1 Series amp E FOR IDENTIFICATION OF NUMBERS PLEASE REFER TO PAGE 7 Motor BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com Relief Valve Motor Pump Adapter amp Coupling Shield TYPICAL PUMP UNITS vu Ah G Tue E LIT E MI TEEGA ve sch Solenoid Valve rnc Eleciric i _ Ed Contra TM e x filler Breather OF law Le Le Hydrauli T Tank X i Pressure Compensated How Control Valve Hydraf Reservi EXTERNAL TANK MOUNT P TO LIFT RAMS Eiectric Motor Solenoid Lowering Valve Clartrica Contro Enclosure Electrical Power Supply Connection Box Pump Fiax Cord to Fost Switch or Pushbution Hydraulic Reservoir H EXTERNAL PAN MOUNT Electric lia BE CA lia ON Fow Control k m ki To Drain Connection i ET At Top of Ham Solenoid Lowering Valve Electrical Control Enclosure Electrical Power Suppiy Connection Box 3 Phase Oniy 3 Phase Units Only Pump Fiex Cord to Foot Switch or Pusbbutton INTERNAL Page 10 v EN a 2 al ki A D 5 TT BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com Fumps Check Valve Cap Nipple to Down Valve Note Use tape pipe sealant only Check Vaive Spring Check Valve Ball Reli
6. THE LIFT ALWAYS FOLLOW THE BELOW LISTED PROCEDURE t Remove load and raise Litt to convenient working height for access lo interna paris a Provide suitable vertical Supports columns under the Lift deck as shown to prevent Lift from fowering Lower the Lift onto support columns unti the hydraulic ram no longer supports the lift structure 4 Disconnect and tag ali electrical andior cther power sources to preclude untimely actuation of Lit 5 Inspect the condition of ab pivot joints and roler as semblies at each periodic maintenance time for damage or wear Suitable means structurally adequate to support ihe im posed loads Consull strength of materiais tables or con suit the factory if there is a question regarding this proce dure scam rd run e e ee 0 000707 BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com Lubrication and Maintenance Instructions for American Hydraulic Lift Tables We recommend that lubrication and preventive mainte nance work should be conducted on a regular schedule that is established on the basis of experience gained during the first few months of operation The need for lubrication and inspection is largely proportionai to ac tual service duty environment and application but It is aiso advisabie to inspect and re lubricate the Lift follow ing a prolonged period of idleness under severe en vironmental conditions American Hydraulic Lifts should be lub
7. lift Limited Warranty American Manufacturing Company Inc warrants that goods sold shall be free of defects in parts or workmanship for twelve 12 months toliowing receipt of goods Defective parts shail be replaced by American FOB it s manufacturing plant This warranty shall not extend to labor requiredto repair goods or replace defective parts Of related shipping costs Except as stated above American Manufacturing Company inc makes no other warrentiea either express or implied including the warranty of merchantability and disclalms tha same No action by buyer arising out of th s sale shali be commenced later than one yaar after the cause of action has accrued No consequentiai damages shail be allowed elther in the event of nonconformity or non delivery of goods Rejection of nonconforming goods must be made by buyer in writing within sevan 7 days of receipt of goods and ali defects ascertainabla at time of giving of notice shall be stated with particularity or be deemed waived 6 The provisiona of thia agreement ahall be construed and enforced in accordance with the UNIFORM COMMERCIAL CODE as enected in the state ot Washlngton BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com suggestions tor Instamauori ot AMERICAN Hydraulic Lifts when permanently anchored or placed in pits Permanent installation of hydrauiic lifts may be subject to local codes rules and regulations per mits and inspection Check
8. your locai codes first The following iliustration shows the most desirable position of tiit for the greatest stability when moving loads on or off the platform when in the raised position When Elevated Loads Shouic Raised Dock Move Off Or On or Truck Bed ui ET TY AD ling End a Ser Over the Edge of Ree N Platform Nearest the Pinned Stabilizer Arms 1 of Grout Under Fe cR EE RIT TTT Ser wma he 4 aw e Side Channels Only Shims Lifts are shipped on a skid or pallet The piatform or deck should be removed from the lift first The lift can then be removed from the skid with siings placed around the base frame Or bottom being careful not to deform any of the frame structure 2 Position the lift and align the frame carefully so the v2 10 134 clearance is maintained around the deck or platform Level the unit and place solid shims under base frame as illustrated Ta Where anchor clips have been provided the bolt fit is close to restrict shifting of lift and this requires careful location of the anchor boits with consideration of the frame platform and pit Recommended concrete anchor bolts are HILTI Kwik Bolt Molly Parabolt or similar TO INSTALL ANCHOR BOLTS 1 Be sure lift is positioned as described above Drill holes in concrete the same diameter as anchor boits using anchor clip holes as guides depth is not criti cai drill sufficiently deep m 2 With nut and washer on anchor bolts
9. Beatonindustrial com 800 724 4052 Jon Beatonlndustrial com AMERICAN HUDRAULIC SCISSOR LIFT READ WARRANTY INFORMATION ON PAGE 2 AMERICAN MANUFACTURING COMPANY INC 2119 PACIFIC AVE P 0 BOX 1237 e TACOMA WASHINGTON 98401 U S A 800 724 4052 Jon Beatonlndustrial com BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com General Inform ation The Hydraulic Scissor Lifts have the load capacity rating and serial number stamped on a metal plate attached fo one end of the lift piattorm Most lifts also have the serial number stamped In ine upper fiange of the base trame a channel near a corner of the base frame The capacity is a net capacity rating for a iift furnished with the standard steal deck The relief valve of the pumping unit has been set to raise the rated capacity plus a small amount of overioad Where gravity roil sections special tops etc are installed on the lift deduct the weight of these from the load rating to obtain the net capacity Lifts should not be overloaded beyond the established capacity as damage may result Unbalancad Loadings Stabilization provided is basically for balanced loads Up to 50 off balance to either end based on standard lift models with minimum platform sizes only Allowances are not made for special sizes or features For unbalanced loads consult the factory Raising Blocks Under Lifts Where it is desired to raise the base of fhe Hts to gi
10. IC LIFT ni LL rt ED serie me dl I PTFE ALLA ETFI DES Sade Gg ade REA BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com Lubrication amp Inspection instructions Lubrication Points A Points noted appiy pressure grease gun lubrication B Points noted apply oil can tubrication Points noted no lubrication required factory lubricated and sealed Inspection Check Points de Visually inspect all lift arm pivot bolts to insure that lock nut has not toosened Visually inspect ail ram crank pins and sei screws to insure that set screw has not loosened allowing crank pin to move Visually inspect all ram crosshead roll pins to insure that roll pin is seatedgorrectiy D THE WARNING ON PAGE 4 BEFORE SERVICING YOUR HYDRAULI C LIFT i i th Visually inspect all ram base thrust pins and keeper bolts to Insure h thrust pin is seated in notch and keeper bolts are tight Visually inspect ali lift arm rolling bearings to insure that bearings DE is tight Heavy duty lifts only Visually inspect ail lift arm pivot pins and s screws to insure that sei screw has not loosened allowing pivot p to move Visually inspect ail hydraulic hoses and fittings to insure there are t chafed hoses or leaking fittings Visually inspect all electrical lines to insure there are no chafed lines loose connections Visually inspect the entire lift unit to insure there are no structut
11. as well as even less frequent usage with ambient temperature of 400 F or over may result in oil temperature of 150 F or more Under these conditions the Lift can be expected to rise more slowly When these conditions exist an oil of higher viscosity may be required such as Mobi DTE 15 Arco AW 46 or Chevron EP 46 Non detergent oiis with a high viscosity index in the range of 140 150 will perform well at these elevated temperatures At extremely low ambient temperaturesthe pour point of the hydraulic oii becomes a criticai factor it IS recom mended that the hydraulic oil have a pour point at least 20 F iower than the lowest ambient temperalure ex pected Consuit the factory Do not use hydraulic fluids which contain additives that may swell or dissolve certain packing materials normaily used in systems designed for petroleum oiis For special fluids consult the factory CAUTIONS a Over filling hydraulic tank will cause the ram drain line to draw oli into empty end of ram faisely indicating ram leakage fuily raised position Tank must contain 144 minimum oil level with ft in LI must be empty no load before performing main tenance work e RI is furnished with maintenance blocks they must be engaged prior to maintenance or lubrication f lift does not have maintenance locks biock platform to prevent downward movement as shown on page 4 READ THE WARNING ON PAGE 4 BEFORE SERVICING YDUR HYDRAUL
12. ef Valve Poppett LORDA FRENI Relief Valve Spring Retief Valve E Adiusting Screw fitting Pump Body Swivel Street Ell Relief Valve Cap M Pump to Motor Counting Adjustments Caution The built in relief valve is set at 2000 POI at factory Do not operate this pump against the relief valve Do not readjust to exceed this setting as fuil load by overloading or in the exireme raised position working pressure is 1700 PSI any period greater than five seconds When Automatic Return controls are used provision must be made to stop the pump Immediately upon Service reaching the raised posltion Do not attempt to replace gears bearings shafts Do not run the standard pumping unit continuously or other maior parts of the pump Order a replace or use on applications requiring more than five ment pump head identified by the nameplate data siaris per minute ih continuous service A special stamped on pump body and plate When assem pump unit externally mounted equipped with bling pump on motor be sure the intermediate continuous duty motor and normally open by pass coupling aligns with motor shaft slot and pump t ng valve can be furnished for high frequency starts Check Valve Cap Serew Check Valve Ball Check Valve Spring Relief Valve Adiusting Screw Cap Nut vl Relief Adjusting Screw TNS SS MAA Retief Outlet 23 To Tank Drive Shaft Seai Relief Spring Name
13. erating Pump Unit Li O n i Hyd H pse 5 Hydraulic Ram EZ Note Lift may have Vee two three four or Check Valve Lowering Valve more rams A SHE Normally Ciosed Master Flow Control Valve Used only with two or more rams EE EB Lr Up Valve Reilef Normally Open Valve gt Strainer NOTE Relief Valve amp a Check Valve are built in Webster Pumps external with others 3 06 3 Normally Open Solenoid Valve tor Continuous Running Unit Repair Parts When ordering parts specify the valve model number pipe size and coil voltage that appears on the nameplate on top of the solenoid The valve body valve cartridges and ihe solenoids are available are repair parts O Ring kits dre also available for service of valve cartridges Specify whether normally open or normaily closed cartridge is required Stem Service in the event the valve malfunctions and the lift does not raise check for burned out coil and or foreign material in spool valve causing failure of valve to close Also check for pos i sible low line voltage E nr Armature Spring wien Armalure Disassembly Procedure Remove nut on top of solenoid Slide coil off valve stem The CP o Snap Ring stem is threaded into valve body Take wrench and remove valve cartridge from body The valve seat is heid in the valve sii Valve Spool stem by an O ring and can be removed by grasping firmly and pulling apart Care
14. failures d T T LTD PETTEE en TTT EDU UUDE i apeg gt C AJ Oi in A amp ho sio se Mo 4 BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com j E General Parts Identification To order parts you must include with your order the model number and seria number as shown on nameplate attached to end of platform on Lift Base Frame Assembly Top Frame Assembly Stabilizer Assembly Stabilizer Assembly Lower Lift Arm Assembly Upper Lift Arm Assembly Roller Bearing Assembly Lift Arm Axle Assembly Pivot Bolt Assembly Stab Pin Assembly 13 14 15 16 17 18 18 20 21 da Stabilizer Hinge Bolt Assembly 23 Lift Arm Hinge Pin Assembiy 24 Ham Crosshead Assembly Ram Base Pin Assembly Hydraulic Ham Assembiy Roller Bearing Assembly Flow Control Valve Hydraulic Tank Motor Pump Solenoid Valve Foot Switch Assembly inner Lift Arm Assembly Outer Lift Arm Assembly TYPICAL NAMEPLATE KM MANUFACTURING COMPANY TACOMA WASHINGTON SA 98492 MODEL M ppt SERIAL MENNNNENEEEE SCISSORS LIFT US PATENT NO 3 115 476 M 500 MM M 1000 070 M 1170 2A Thru 21 Series g efed BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com M 1170 2M M 1170 2N M 1170 2P M 1202 Series M 1170 7 A M 1170 7C Series t i E E E gt LL JAA andi t F er m PARE mia uet d E le CT E KC R TO PAGE 7
15. fully remove the valve from the seat Reassembiy Roassemble in the same manner as disassembly Make sure valve spool and seat are clear of foreign material Check O rings for damage or repiace with new kit Use care in reas sembly to avoid damage to CO rings Normally open valve shown exploded See page 1 normaly closed valve stase Seege a ett DT a kk ci ebbe BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com Wiring Biagrams WSL 8210 W 2137 B R ing Pump Unit intermittent Running Pump trait Continuous Runnin Volts Three Phase 230 460 or 575 Yo Three Phase 230 460 or 575 Volts rd CET QU Motor Starter wilh Gta Stoo Puehbullone in cover t Pt E Pro Motor Contactor Note Motor has Sultan i Contro a tnormai protection Transformer mella when t HP or smalier j x x Larger motors are Foo TA ot provided with over load Statio SC tack Cask EV protection in motor ac OL IL starter o i t n E 5 un Lu white Qe Green D m 7 I CS n i Down j Solenoid Solenoid Valva engi a Normally Open m m i Hed Lowering Valve k EHIK I d s KL MM wm i Golencid Valve Hormally Closed T ee d Foot Switah or Pushbutton Btalkon Intermittent Running Pump Unit W 21358 Single phase 115 Volts POWER SUPPLY CORD Ge Lift Pump Unit Grounded Pug MA Green T I Gree ji Motor with built in Da Whit i thermal protection ite White T Down
16. ge affects speed and capacity if foam is visible in tank oil check for leaks in suction iine between pump and tank Suction line may leak tighten fittings Relief valve may leak observe relief line from pump to tank i flow is detected remove foreign matter from relief valve and adjust to turn beyond what is required to lift load e Inspect lowering valve see No 3 C below C 0 U 3 Whan litt slowly setties with lowering valve closed a inspect check valve for leakage by removing tank cover and noting if oil fiows through suction iine to tank Remove springs and bali and inspect for foreign matter b Flush lowering valve by operating up and down controls simultaneously This shouid be done with no load c Disassembie valve and look for foreign material under valve seat 4 It lift will not lower a Test valve coil for operation Check voltage at coii 5 Wlift wifi not raise to full vertical travel a Check for low oil level 6 if the lift does not lower smoothly do as follows a Fun lift up and down under load a few times to purge air 7 if the Rams appear to be leaking and an excess of oil causes the drain connections ck to the tank to be blown free of the Rams it is generally due to ah excess of oii in the sank which is being sucked into the Rams ON the down stroke TO test disconnect the drain lines WARNING PROVIDE SUITABLE BEFORE PERFORMING LUBRICATION OR MAINTE SUPPORT COLUMN NANCE WORK ON
17. out rod guide and piston assembly To replace Wear Ring Teflon Backup Ring O Ring Nylon Guides and Wiper Strip it Is oniy necessary to spring these paris out of the grooves and remove them long wise over the tands of the Piston and Rod Guides Assembly Procedure Clean Piston and Cylinder and Remove Any scratches or burrs that might damage sealing paris or prevent proper sealing function Lubricate lands and groove and install new paris according to the illustration Meassembie piston rod and rod guide assembly installing the wire snap ring and spiral retaining ring in reverse order o disassembiy Spiral Wire Snap Ring Retaining Ring O Ring Guide Nylon Wear Strip Wiper Strip m Ii ti Iii BENNY ELT E Jee 227 A I uU n i uio dw T si Ge ul KH ui i IK TS NEA j 3 ARVA Rod MOMENTE TEN i Flexloc Mut r Rod Guide Piston a Cylinder i Elbow Page 12 6 BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com Hydraullc Schematic Standard Pump Unit Hydraulic Ram Note Lift may have Fa Drain two three four or more rams Master Flow Control Valve L Used only with two Or more rams x LIN ed KAAN hyd Hose Flow Contro Valve lowering Valve controls down speed Normaliy Closed Check Vaive NEI Pump a n MEME t bj i Relief Valve SARI Note Check Valve amp Relief Valve buil
18. piate Retief Poppet K intermediate Coupling manna Los ire TT BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com Cylinder Base Pin Model He Stamped Cylinder Barrel in Ring Teflon Backup Ring Piston Wear Ring QU Rino Figxloc Nut Repair Parts When ordering paris specify the Ham Model Number stamped on the base of the cylinder A repair kit consisting oi the following parts IS avaitabie 1 Wear Ring 1 Nylon Wear Strip Teflon Back up Ring 1 Wiper Strip 3 O Rings Disassembly Procedure A repair kit should always be On hand before disassembly of the rams since ail of these paris could become damaged when the piston is with drawn from the cylinder and pass over the snap ring groove on the cylinder wall Discard any such damaged parts and replace with new Disassemble as follows 4 Remove drain elbow from rod guide o Remove outer spiral type retaining ring from rod guide O Ring Fiston Teflon Backup Ring Wear Ring il Nylon Wear Strip Wiper Strip Rod Guide LE m TYPICAL RAM O Ring Rod End LY EF AS DOT e npn Rind Wire Snap Ring Spiral Retaining Ring Cross Head Pin Oitite Bearings a BEE Ein T E sport e vs aere Pri VAL tarima npn ia et ee d Rail Pin i Cross Head 4 Push ihe rod guide back into cylinder bore until the wire snap ring i accessible 4 Remove the wire snap ring and pull
19. ricated and com oletely inspected at least once a week during the first month of regular operations It is likely that such fre quent attention wili prove unnecessary but will resuit in the establishment of realistic scheduling A suitable iu bricant containing molybdenum disulphide shouid be used as Molub Alloy No 2 Imperial OH amp Grease Co ine Los Angeles California or RPM Moly Grease 2 Standard OB Company of California Inspection should inciude careful examination of ali fas tenings fulcrum pins rolling surfaces and rollers hy draulic connections electrical systems and general functions lf there is a persistent accumulation of debris water or other harmful materials present in any part of the lift resulting from environment or the materials being handied the Lift should be cleaned and consideration given to means for the prevention of such conditions The pump unit hydraulic oii should be Mobile DTE 1S Arco AW 32 Chevron EP 32 or any turbine quality non detergent oil having the foliow ing general specifications Viscosity est at 40 degrees C 25 40 and a viscosity index of 90 or higher The use of multi grade motor oils such as RPM Su preme Motor OF SAE 510 10W 20W 20 or SAE 10W 20W 30 is permissible where the above oiis are not readily available Since the viscosity of the hydraulic oil is reduced by an increase in temperature frequent use of the Lift under conditions of normal ambient temperature
20. t in Sta Rite PERE pumps External with other pumps 3 C5 3 or 3 C5 6 eo Normally Closed Solenoid Lowering Valve Service in the event the valve malfunctions check for burned out coil and or foreign material in valve causing failure of valve to close Check for pos sible iow line voltage AA EE ma Valve Stern Disassembly Procedure Remove nut on top of solenoid Slide coll off valve stem The stem is threaded into valve body Take wrench and remove valve cartridge from body The valve seat is held in the vaive stem by an O Ring and can be removed by grasping firmly and pulling as dear GA 0 Ring S Sol rk Ring apart Carefully remove the valve from the seat Pilot dla Reassembly SR Pilot Valve Reassembie in the same manner as X eO Pitot Va disassembly Make sure valve spool and seat are clear of foreign materiel Check O rings for damage or replace with new kit Use care in reassembly to avoid demage to O rings Repair Parts When ordering parts specify the velve model number pipe size and coil voltage that appears on the nameplate on top of the solenoid The valve body valve cartridge and solenoid are available as repair parts An O Ring Kit is also vaiveGarindge available for service of velve certridge INED nono BeatonIndustrial com 800 724 4052 Jon BeatonIndustrial com ni FL UE M lV muy ear eed kik wd VUE ER c M Wem mF controls down speed J E e Continuous Op
21. ve a greater collapsed height to the unit support members can be placed longitudinally or transversely When lohgitudina members are used they should be under all long rails of the base When transverse supporting is necessary it is important to provide members beneath the lift arm hinge points and also the areas of stabilizer hinge points and rollers Operating Characteristics The hydraulic system usually contained in ihe base of the lift table consists of a directly coupied motor and pump combination oil reservoir solenoid operated lowering valve and ali necessary piping The pump is of the positive displacement type and operates at a usual working pressure of about 1700 psi A fine mesh screen is provided for protection of the pump intake and a pre adjusted built in relief valve protects the pump discharge from the effects of overloading The operating principle provides that the pump is operated to raise the table and the pump is stopped when the table attains the desired elevation A check valve between the pump and ram holds the table at elevation For lowering to any desired level the solenoid valve is energized to allow fluid to retum from ram to reservoir A pressure compensated flow controi valve is connected to the ram to limit the down speed io a pre determined rate under ai load conditions All automatic controls added to the lift must include provision for immediately shutting off the pumping unit at the top travel of the
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