HEIN-WERNER AUTOMOTIVE HW93720 Instructions for use

Operating Instructions & Parts Manual
Model Number Capacity
HW93720 1/2 Ton
Telescopic
Transmission Jack
Made in the USA

SAVE THESE INSTRUCTIONS
Foryoursafety,read,understand,andfollowtheinformationprovidedwithandonthisjack.Theownerandoperatorofthis
equipmentshallhave an understanding ofthisjack and safe operatingproceduresbefore attempting to use.Theowner and
operatorshallbe aware that useandrepairof this product mayrequirespecial skills and knowledge.Instructionsandsafety
informationshall beconveyed inthe operator'snative language before use of this jack is authorized. If anydoubt existsas
tothe safeand proper use of thisjack, remove from service immediately.
Inspect before each use. Donot use ifthere are broken,bent, cracked, ordamaged parts (includinglabels). Any jack that
appears damaged in any way, operates abnormally or is missing parts, shall be removed from service immediately. If the
jack has been or suspected to have been subjected to a shock load (a load dropped suddenly, unexpectedly upon it),
immediately discontinue to use until jack has been inspected by a Hein-Werner authorized service center. It is recom-
mended that an annual inspection be done by qualified personnel. Labels and Operator's Manual are available from
manufacturer.
PRODUCT DESCRIPTION
Hein-WernerTelescopic Transmission Jackisdesigned to beused as anaidin the removaland installation ofautomotive
andlighttruck transmissions,transfercasesandtransaxles. It is intended for use under an overhead lift or in a garage pit.
Itsairactuatedfeaturesrequireanairsourceof 90-160psi.Toensuredependable,troublefreeoperationaninlineairdryer
and oiler is recommended.
SAFETY INSTRUCTIONS
BEFORE USE
1.Verify that theproduct and theapplication are compatible,if in doubtcall Hein-WernerTechnicalService(816)891-6390.
2.Read theoperator's manual completely and familiarize yourself thoroughly with theproduct, itscomponents and recog-
nize the potential hazards associated with its usebefore using this product.
SPECIFICATIONS
Model Capacity Min. Height Max. Height Lifting Head Size Forward Tilt Rearward Tilt Sideways Tilt Chassis Size
(L x W)
HW93720 1/2 ton 34-1/2" 75" 11-1/2" x 11-1/2" 50o20o10o L & R 41" x 41"
• Readand understand allprinted materialsprovided with andon this devicebefore use.
• Donotexceedrated capacity.
• Ensure the center of gravity is centered on the saddle.
• Use only on hard, level, seamless surface.
• Useofthisjack is limited to theremoval,installationandtransportation of transmissions, transfercasesandtransaxles.
• Do not allow any part of your body under the load while jack is supporting a load.
• Use only the saddle assembly to lift. Never use any other part of the jack as a lifting surface.
• No alterations shall be made to this product.
• Thisisaliftingandloweringdeviceonly. Transferloadimmediatelytoappropriatesupportdeviceforserviceorrepair.
• Only attachmens and/or adapters supplied by the manufacturer shall be used.
• Keep transmission at the lowest position when moving the transmission from one place to another.
• Adequately support the vehicle before starting repairs
• Use the straps to secure the transmission until ready to remove transmission from jack.
• When transferring a load to the lift, the air stage should be fully lowered or fully raised and pawl (locked). If a load is
transferred to the lift when the air cylinder is only partially raised, the lift may drop suddenly.
• Failure to heed these markings may result in personal injury and/or property damage.
!WARNING

•Leer, comprender,y seguir las instrucciónes antes
de utilizar el aparato.
• El manual de instrucciónes y la información de
seguridad deben estar comunicado en lengua del
operadorantes del uso.
•Noseguir estas indicaciónespuedecausar daños
personales o materiales.
ASSEMBLY
Little, if any, assembly is required of this jack. Familiarize yourself with the illustrations in the operator's manual. Know
yourjack andhow itoperates before attempting to use.
!ADVERTENCIA
Figure 1. Telescopic Transmission Jack Components
Be sure all tools and personnel are clear before
lowering load. Only attachments and/or adapters
supplied by the manufacturer shall be used.
! Safety Messages ! To avoid crushing and related injuries:
NEVER work on, under or around a
load supported only by a jack.
Immediately transfer load to
appropriate work station.
Saddle Assembly
Side to Side Crank
Caster
Pump Handle
Ratchet Bracket
Fore& Aft Crank
AirStage
Hydraulic Stage
Air Valve Air Inlet Port
LiftPedal
("UP")
FootPedal
("DOWN")
Locking Pawl
Release Valve Knob
SafetyStrap

OPERATION
Priming Instructions (refer to Figure 2)
1. Tilt the entire tranmission jack over two casters so that the pump and handle are below the hydraulic cylinder as
shownin Figure 2.
2.Open the release valveknob "COUNTERCLOCKWISE" and pumphandleuntil "resistance" isfelt.
3.Close therelease valve "clockwise" and continue pumping while restoring thejack toits upright position
Thetransmission saddleassembly is raised and loweredby means of an air operated stageand a hydraulic stage. A
locking pawl automatically engages at the end of the air cylinder travel to mechanically lock the cylinder and prevent
drop when the transmission is loaded onto the saddle assembly.
Transmission Removal
1.With vehicle elevatedon lift,position the jackunder transmission tobe removed.
2. Connect 1/4" air nipple to air inlet port. Connect air hose to the air nipple. Depress the lift pedal that marked "UP"and
raiseair stage to its fullyextended position.The air stagewill stopautomatically by the locking pawlat its full height. Air
hosecanberemoved.
3. Close the release valve by turning the release valve knob in clockwise direction. Pump the handle until saddle reached
desiredposition
4.Make sure saddlesare centered andpositioned directly underthe transmission tobe removed.
5. Adjust the position of the saddle assembly side to side and tilt forward or backward to get a firm contact at the bottom of
transmission.
6. Slowly pump the handle with a small strokes so the saddle assembly raised slowly to contact with the transmission.
7. Push in the 4 ratchet brackets on saddle assembly firmly to grab the edges of transmission housing. (see Figure 3)
Figure 2
Unlock pawls to pull out
ratchetbrackets.
Figure 3
Supporting
Station

!WARNING
• Never pry locking pawl to release the load because the load will drop unexpectedly.
• Beforeremoving or placinga transmission onthe jack platformthe air cylindermust be eitherfully elevated (UP) and
pawl"locked" orfully retracted(DOWN) with air pressure released.
• Keepsafety strap secured.
• Failureto heedthis warning may result inpersonal injury and/or property damage.
OPERATION (Continued)
8. Secure the transmission to the jack by placing the strap over the trasmission, hook it in the hook ring, and then pull the
strap tight. (see Figure 4)
9.Support engine with appropriatestand before removing transmissionfromengine. (see Figure5)
10. When component is free, slowly lower the jack by turning the release valve knob counterclockwise.Thenfollowby
the air stage by depressing foot pedal marked "DOWN".
11. If the lowering process was caught by the locking pawl, depress "UP" lift pedal briefly so locking pawl will release.
Depress "DOWN" footpedaltolowerthejack.
Figure 4
Figure 5
Transmission
Engine
Strap
Transmission
Saddle
Support engine with appropriate stand

MAINTENANCE
Important: Useonly a good gradehydraulic jack oil. Avoidmixing different types offluid and Never usebrakefluid,turbine
oil, transmission fluid, motor oil or glycerin. Improper fluid can cause failure of the jack and the potential for sudden and
immediateloss of load. We recommendHein-Werner hydraulic jack oil HW93291.
Adding oil
1. With saddle fully lowered set jack in its upright, level position.
2. Remove the 4 bolts attaching the saddle assembly to the hydraulic unit. (see Figure 6)
3.Remove oil fillerplug andrelease valve knobassembly to ventthe reservoir.
4.Add hydraulic oiluntil it overflows.Reinstall theoil filler plug,release valve andsaddle assembly.
Changing oil
For best performance, replace the hydraulic fluid completely at least once a year.
1. With saddle fully lowered, remove the 4 bolts attaching the saddle assembly to the hydraulic unit.
2. Remove the oil filler plug. Lay the jack on its side and drain the fluid into a suitable container.
3. Fill with oil until it overflows. Reinstall the oil filler plug and saddle assembly.
Note: Disposeof hydraulic fluidin accordance withlocal regulations.
Lubrication
1. A periodic coating of light lubricating oil to all moving parts will help to prevent rust and assure that casters and pump
assembliesmovefreely.
2. Whenused on adaily basis, The air pumpshould be internallylubricated before eachuse. Use only good qualityair tool
lubricant. If no inline oiler is used, pour a teaspoon of air tool oil into the inlet of the air supply inlet. Simply operate the
jack using the air feature in order to fully distribute the oil.
Figure 7. Valve Diagram
Figure 6
Bolt
Release Valve Knob

Possible Causes Corrective Action
Hydraulic stage will not lift load
Will not lift to full extension
•Overload condition
•Lowoillevel
• Hydraulic unit malfunction
•Oil level low
•Oil level low
•Remedyoverload condition
•See Maintenance "Adding oil"
•ContactHein-WernerTechnicalService
•Ensureproperoillevel
•Ensureproperoillevel
Poorliftperformance
Hydraulic stage will not lower after
unloading •Hydraulic unit malfunction •ContactHein-WernerTechnicalService
TROUBLESHOOTING
Symptom
Air stage will not lift load •Airvalve maybe dirtyorleaking •Clean theair valve (refer to"Cleaning" under
Maintenance
Air stage will not hold load •Air leak •ContactHein-WernerTechnicalService
Cleaning (refer to Figure 7 on Page 7)
Occasionallypiecesofscale or rust fromtheairlinewillbecome lodged under the rubberseatsofthe air valve causing air
leakage. This leakage is easily detected since the lift will raise slowly when you connect the airline to the quick coupler
inlet even thought the valve lever has not been touched. If this occurs, the inlet side of the valve needs cleaning. The lift
may also lower slowly when you disconnect the airline from the quick coupler even though the valve lever has not been
touched.If thisoccurs, either the inet side or bothsides ofthe valve needs cleaning. To clean, referto Figure7 on Page
7 and follow these instructions:
1.Removefittings (1) from theendsof the air controlvalve.
2. Use a stiff wire or nail to push the valve spools (2) out of the valve body (3) from center to outside.
3.Carefullyexaminethevalve seats (4) for any scale, dirt or foreign matter is embedded in the valve seat,removethescrews
(5)and cap(6) fromthe ends of the spools and clean the seatand turnover andreassemble.
4. Lubricate the valve spool with light chassis grease.
5. Reassemble the valve in this order:
(I) Insert valve spools
(II) Insert the springs
(III) Assemble hexagonal fittings into the body
6.Thevalveshouldnowoperatelikenew.
Storage
When not in use, store the jack with saddle fully lowered.

SERVICE PARTS
Figure8:ReplacementpartsforHW93720

Item No. Part No. Qty. Description Item No. Part No. Qty. Description
1239629 1Hydraulic Unit 46 239674 2Side Tilt Shaft
2239630 2Retaining Ring, 3/8" 47 239675 1Trunnion Tilt
3239631 1Shaft, Pump 48 239676 4Pivot Bracket
4239632 1Pump Handle Socket 49 239677 4Capscrew 3/8 x 1
5239633 4Roll Pin, 1/4 x 1 1/2 50 239678 1Lockwasher, 3/8
6239634 1Pump Handle Rod 51 239679 1Hyd. Unit Bracket
7239635 1Handle Grip , 3/4 I.D. 52 239680 1Long Tilt Shaft
8239636 1Wiper Ring, 2" 53 239681 1Crank (Lower)
9239637 1Felt Ring, 2 3/4" O.D. 54 239682 1Clip Pump
10 241082 1Gland 4" I.D. 55 239683 1Nut, Jam, 3/4-16 UNF
11 241078 1Piston Rod 56 239684 1Washer, Rim
12 241079 1Seal 4" Dia. 57 239685 1Swivel Pivot
13 241080 1Wiper Ring, 4 " 58 239686 1Pump Sleeve
14 239642 1Nut, 1/4-20, Self Locking 59 239687 1Seal, 13/16 O.D., X 7/16 I.D.X 1/4 Deep
15 239643 2Pedal, "Up" 60 239688 1Plunger
16 239644 4Rivet 1/4 x 1-3/4 61 239689 1Capscrew, SOC. HD, 5/16-18 UNC
17 239645 2Slip nut, 1/4" 62 239690 1Gasket, Metalic
18 239646 1Control Rod 63 239691 1Guide, Ram
19 239647 1Air Valve 64 239692 1O' Ring, 1 O.D. x 13/16 I.D., 3/32 Dia.
20 239648 1Tow Handle 65 239693 1Cap
21 239649 1Valve Cover 66 239694 1Seal, 11/16 O.D. x & 7/16 I.D., 3/16 Deep
22 239650 1Capscrew, 1/4 x 1 3/4 67 239695 1Magnet
23 239651 1Pipe, 1/4 x 14 3/4 68 239696 1Spacer
24 239652 2Street Elbow 1/4 69 239697 1Suction Tube, 22 5/8 Long
25 239653 2Rod End 70 239698 1Packing Gasket, Felt
26 241081 1Base Weldment 71 239699 1Packing Gland 2 " Bore
27 239655 2Caster, 4" 72 239700 1Ram
28 239656 2Caster, 4" , with Brake 73 239701 1Suction Tube, 6" Long
29 239657 6Nut, 1/2-13, Self Locking 74 239702 1Cylinder Tube
30 239658 1Pedal "Down" 75 239703 1Reservoir Tube
31 239659 1Spring 76 239704 1Release Knob Sub Assy.
32 239660 3Spacer Drilled 77 239705 1Spring Compression, .406 O.D.
33 239661 5Roll Pin, 3/16 x 7/8 78 239706 1Ball, 3/8 Dia., R.C.
34 239662 2Capscrew, Special 79 239707 1Spring Compression, .250 O.D.
35 239663 1Crank, Side Tilt 80 239708 2Ball, 1/4 Dia., RC
36 239664 1Spacer not Drilled 81 239709 2Plug
37 239665 2Nut Tilt 82 239710 1Block Hydraulic, Weldment
38 239666 4Ratchet Assy. 83 239711 1Warning Label
39 239667 3Trans, Bracket, Long 84 239897 1Nameplate
40 239668 1Reel Assy. 85 239713 1"Up" Label
41 239669 2Tran. Bracket, Short 86 239714 1"Down" Label
42 239670 4Capscrew, Flat HD, 1/4 x 1/2 87 234947 1Logo Label
43 239671 1Roll Pin 1/4 x 7/8 88 239716 1Capacity Label
44 239672 4Adapter weldment 89 241083 4Capscrew, 3/4 Self Lock
45 239673 1Angle Stop
SERVICE PARTS