Operating Instructions and Parts Manual
3-Ton Short Chassis Service Jack
Model JSJ-3XA
WALTER MEIER (Manufacturing) Inc.
427 New Sanford Road
LaVergne, Tennessee 37086
Part No. M-454224
Ph.: 800-274-6848
Revision A 02/2012
Copyright © 2012 Walter Meier (Manufacturing) Inc.
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2.0 Table of contents
Section
Page
1.0 Warranty and Service ....................................................................................................................... 2
2.0 Table of contents.............................................................................................................................. 3
3.0 Safety warnings................................................................................................................................ 4
4.0 About this manual............................................................................................................................. 4
5.0 Specifications ................................................................................................................................... 5
6.0 Assembly.......................................................................................................................................... 6
7.0 Lubrication........................................................................................................................................ 6
8.0 Operating instructions....................................................................................................................... 6
8.1 Raising the jack..........................................................................................................................................6
8.2 Lowering the jack .......................................................................................................................................6
9.0 Maintenance..................................................................................................................................... 6
10.0 Troubleshooting the JSJ-3XA Service Jack..................................................................................... 7
11.0 Replacement Parts ......................................................................................................................... 7
11.1.1 Main Body Assembly (3T Short Chassis Service Jack) – Exploded View.............................................8
11.1.2 Main Body Assembly (3T Short Chassis Service Jack) – Parts List .....................................................9
11.2.1 Power Unit Assembly (3T Short Chassis Service Jack) – Exploded View..........................................10
11.2.2 Power Unit Assembly (3T Short Chassis Service Jack) – Parts List...................................................11
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3.0 Safety warnings
1. Read and understand the entire owner's manual before attempting assembly or operation.
2. Read and understand the warnings posted on the jack and in this manual. Failure to comply with all of
these warnings may cause serious injury.
3. Replace warning labels if they become obscured or removed.
4. This is a lifting device only. Do not move or dolly the vehicle while on the jack. The load shall be
supported immediately by jack stands, or other appropriate means.
5. Inspect jack before each use. Do not use jack if it is damaged, has been altered or parts have
loosened.
6. Do not exceed rated lift capacity. Overloading can cause damage to, or failure of, the jack.
7. Always center load on saddle.
8. Do not introduce blocks or other items between load and jack saddle.
9. Lift only on areas of the vehicle specified by the vehicle manufacturer.
10. This jack is designed for use on hard, level surfaces capable of sustaining the load. Use on other than
hard, level surfaces can result in jack instability and possible loss of load.
11. Clear obstructions from around jack area, such as tools, gravel, etc., before lifting.
12. Do not get under vehicle while jack is being used as the only support.
for the location of your nearest JET Authorized Service Center.
14. Jack service must be performed by qualified personnel only. Use only genuine JET factory
replacement parts; use of unauthorized parts may cause risk of injury, and may void warranties.
15. Use only approved hydraulic fluid (ISO 32 hydraulic oil, or “jack oil”). Use of other fluids, such as
brake fluid or transmission oil, can damage seals and cause possible jack failure.
16. Do not modify the jack.
17. Failure to comply with all of these warnings may result in loss of load, damage to jack, and/or failure
resulting in personal injury or property damage.
4.0 About this manual
This manual is provided by Walter Meier (Manufacturing) Inc. covering the safe operation and
maintenance procedures for a JET Model JSJ-3XA Short Chassis Service Jack. This manual contains
instructions on installation, safety precautions, general operating procedures, maintenance instructions
and parts breakdown. Your jack has been designed and constructed to provide years of trouble-free
operation if used in accordance with the instructions as set forth in this document.
If there are questions or comments, please contact your local supplier or Walter Meier. Walter Meier can
Retain this manual for future reference. If the jack transfers ownership, the manual should accompany it.
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5.0 Specifications
Model number ...........................................................................................................................................JSJ-3XA
Stock number..............................................................................................................................................454224
Rated Capacity...............................................................................................................................................3 Ton
Strokes to reach maximum height without load .............................................................................................2 to 3
Regulating pressure ..................................................................................................................................113 MPa
Maximum Height – A ...................................................................................................................... 19.3” (490mm)
Minimum Height – B....................................................................................................................... 5-3/4” (145mm)
Saddle Diameter – D...................................................................................................................... 4-3/4” (120mm)
Overall Length – C .................................................................................................................... 27-3/4” (703.5mm)
Overall Width – E ......................................................................................................................... 13-1/2” (343mm)
Handle Length (two pieces) – F ................................................................................................. 39-1/2” (1000mm)
Net Weight ...........................................................................................................................................77 lb (35kg)
Shipping Weight .............................................................................................................................80.5 lb (36.5kg)
Figure 1
The specifications in this manual were current at time of publication, but because of our policy of continuous
improvement, Walter Meier (Manufacturing) Inc., reserves the right to change specifications at any time and without
prior notice, without incurring obligations.
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8.0 Operating instructions
6.0 Assembly
Numbers in parenthesis (#) refer to parts
breakdown, page 6:
Important: During shipment and handling, air
sometimes gets into the hydraulic system
causing poor lifting performance. Before initial
operation, purge any air from system by fully
opening pump release valve (turn handle
counter-clockwise). Then, while holding saddle
down, pump handle rapidly several times.
1. Insert Upper Handle (30) into Lower Handle
(29) and fasten with Hex Cap Bolt (28).
2. Remove Handle Bolt (25).
3. Insert handle assembly into Handle Socket
(23). Make sure handle assembly engages
Gear Shaft (27) by turning handle back and
forth and observing movement of Handle
Socket Gear (26).
8.1 Raising the jack
1. Close release valve by turning handle
clockwise until resistance is felt. Do not over
tighten.
4. Install Handle Bolt (25) to secure handle
assembly.
2. Place jack directly under object to be lifted,
and pump handle to raise saddle to contact
point. Make sure saddle accepts weight
firmly and centrally.
7.0 Lubrication
3. Check positioning under slight load to
confirm jack or load will not slip, or move
suddenly.
Note: Lubricate before initial operation, and
periodically to ensure smooth operation.
Lubricate jack at points 1 through 6, as indicated
in Figure 1.
4. Raise jack by pumping handle until desired
height is reached.
5. After lifting, secure and transfer load to jack
stands or other appropriate means. Do not
use jack as the only means of support.
8.2 Lowering the jack
Slowly turn handle counter-clockwise. Speed of
descent is controlled by amount release valve is
turned.
9.0 Maintenance
Store jack in a safe and dry environment, away
from children or unauthorized personnel. Always
store jack in fully lowered position, with handle in
upright position.
Figure 1 – Lubrication points
1. Handle: Use #2 tube grease on release
valve gears below handle and lightly grease
handle at point where it fits into socket.
Keep jack clean and properly lubricated.
2. Wheels: Use 30W oil on axles and caster
bearings.
3. Lifting Arm: Inject #2 tube grease into
grease fitting.
4. Saddle and linkage: Use 30W oil on all
moving and pivoting parts.
5. Handle socket pivot bolts: Lubricate with
30W oil.
6. Plunger and plunger pin: Use #2 tube
grease to lubricate connection between
pump plunger and pin in handle socket.
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10.0 Troubleshooting the JSJ-3XA Service Jack
Symptom
Possible Cause
Correction
Jack fails to lift load, Release valve open.
or only partially lifts.
Close valve by rotating handle
clockwise.
Weight capacity exceeded.
Use other lifting equipment; load must
not exceed rated capacity of jack.
Low hydraulic fluid.
With jack on level ground, lower saddle
completely. Remove fill plug and check
oil level. Fill as needed with approved
hydraulic fluid. Reinstall fill plug.
Jack fails to rise to Low hydraulic fluid.
height limit.
With jack on level ground, lower saddle
completely. Remove fill plug and check
oil level. Fill as needed with approved
hydraulic fluid. Reinstall fill plug.
Jack fails to hold load Release valve open.
in raised position.
Close valve by rotating handle
clockwise.
Jack oil leaks
Reservoir overfilled.
Seals are worn.
Drain some oil from reservoir.
Have seals replaced by authorized
service center.
Handle won’t pump Air in system.
full stroke.
Bleed air from system by opening
release valve and pumping handle
several times.
11.0 Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call
1-800-274-6848 Monday through Friday (see our website for business hours, www.waltermeier.com).
Having the Model Number and Serial Number of your machine available when you call will allow us to
serve you quickly and accurately.
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11.1.1 Main Body Assembly (3T Short Chassis Service Jack) – Exploded View
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11.1.2 Main Body Assembly (3T Short Chassis Service Jack) – Parts List
Index No Part No
Description
Size
Qty
1...............JSJ3XA-01...............Front Caster .......................................................................................... 2
2...............JSJ3XA-02...............Washer...............................................................18mm......................... 2
3...............JSJ3XA-03...............C-Clip.................................................................18mm......................... 2
4...............JSJ3S-07.................Swivel Caster Assembly ........................................................................ 2
5...............JSJ3S-08.................Ball Ring................................................................................................ 2
6...............JSJ3S-09.................Steel Ball............................................................6.35mm.................... 38
7...............JSJ3S-10.................Ball Cover.............................................................................................. 2
8...............JSJ3S-05.................Lock Washer ......................................................16mm......................... 2
9...............JSJ3S-06.................Hex Nut..............................................................M16............................ 2
10.............JSJ3S-13.................Arm Shaft.............................................................................................. 1
11.............JSJ3S-14.................Retainer Ring .....................................................25mm......................... 4
12.............JSJ3S-11.................Lock Washer ......................................................12mm......................... 4
13.............JSJ3S-12.................Socked Head Cap Screw....................................M12x25...................... 2
14.............JSJ3S-18.................Hex Nut..............................................................M12............................ 2
15.............JSJ3S-17.................Shaft ..................................................................................................... 1
16.............JSJ3S-16.................Lock Washer ......................................................10mm......................... 3
17.............JSJ3S-15.................Hex Nut..............................................................M10............................ 3
18.............JSJ3S-19.................Screw.................................................................................................... 1
19.............JSJ3S-20.................Lock Washer ......................................................18mm......................... 2
20.............JSJ3S-26.................Torsion Spring....................................................................................... 1
21.............JSJ3S-21.................Pin......................................................................2x16mm ..................... 1
22.............JSJ3S-22.................Washer...............................................................8mm........................... 4
23.............JSJ3S-27.................Handle Socket....................................................................................... 1
24.............JSJ3S-24.................Pump Pin .............................................................................................. 1
25.............JSJ3S-25.................Bolt........................................................................................................ 1
26.............JSJ3S-23.................Release Valve Gear .............................................................................. 1
27.............JSJ3S-29.................Gear Shaft............................................................................................. 1
28.............JSJ3S-31.................Hex Cap Bolt......................................................M6x35........................ 1
29.............JSJ3S-32.................Lower Handle ........................................................................................ 1
30.............JSJ3S-34.................Upper Handle ........................................................................................ 1
31.............JSJ3S-33.................Handle Grip........................................................................................... 1
32.............JSJ21/4XA-32..........Power Unit Assembly............................................................................. 1
33.............JSJ3XA-33...............Gear...................................................................................................... 1
34.............JSJ3XA-34...............Washer...............................................................8mm........................... 1
35.............JSJ3XA-35...............Nut .....................................................................M8.............................. 1
36.............JSJ3S-42.................Return Spring........................................................................................ 1
37.............JSJ3S-41.................Pin......................................................................4x50mm ..................... 1
38.............JSJ3S-40.................Cross Head ........................................................................................... 1
39.............JSJ3XA-39...............Screw.................................................................................................... 1
40.............JSJ3S-39.................Grease Fitting.....................................................M6.............................. 1
41.............JSJ3S-36.................Lifting Arm Assembly............................................................................. 1
42.............JSJ3S-37.................Saddle................................................................................................... 1
43.............JSJ3S-35.................Bolt........................................................................................................ 2
44.............JSJ3XA-44...............Side Plate Assembly.............................................................................. 1
.................JSJ3XA-WL .............I.D./Warning Label (not shown).............................................................. 1
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11.2.1 Power Unit Assembly (3T Short Chassis Service Jack) – Exploded View
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11.2.2 Power Unit Assembly (3T Short Chassis Service Jack) – Parts List
Index No Part No
Description
Size
Qty
.................JSJ21/4XA-32..........Power Unit Assembly (includes 32-1 thru 32-45).................................... 1
32-1..........JSJ21/4XA-321........Cylinder Cover....................................................................................... 1
32-2..........JSJ21/4XA-322........O-Ring *................................................................................................ 1
32-3..........JSJ21/4XA-323........Seal Ring *............................................................................................ 1
32-4..........JSJ21/4XA-324........Oil Tank................................................................................................. 1
32-5..........JSJ21/4X-57 ............Oil Fill Plug *.......................................................................................... 1
32-6..........JSJ21/4X-54 ............O-Ring *................................................................................................ 1
32-7..........JSJ21/4XA-327........Ram ...................................................................................................... 1
32-8..........JSJ21/4XA-328........Retainer *.............................................................................................. 1
32-9..........JSJ21/4XA-329........Piston Ring............................................................................................ 1
32-10........JSJ21/4XA-3210......Washer * ............................................................................................... 1
32-11........JSJ21/4XA-3211......O-Ring *................................................................................................ 1
32-12........JSJ21/4XA-3212......Pin......................................................................................................... 1
32-13........JSJ21/4XA-3213......Spring.................................................................................................... 1
32-14........JSJ21/4XA-3214......Ram Rod............................................................................................... 1
32-15........SB-4MM...................Steel Ball............................................................4mm........................... 2
32-16........JSJ21/4XA-3216......Spring.................................................................................................... 1
32-17........JSJ21/4XA-3217......Screw.................................................................................................... 1
32-18........JSJ21/4XA-3218......O-Ring *................................................................................................ 2
32-19........JSJ21/4XA-3219......Retainer *.............................................................................................. 1
32-20........JSJ21/4XA-3220......Ram ...................................................................................................... 1
32-21........JSJ21/4XA-3221......Seal Ring *............................................................................................ 1
32-22........JSJ21/4XA-3222......Cylinder................................................................................................. 1
32-23........JSJ21/4X-88 ............Back Up Ring *...................................................Ø50.2 x ø47 x 1.6....... 1
32-24........JSJ21/4X-89 ............O-Ring *.............................................................Ø46.5 x ø2.4 .............. 1
32-25........JSJ21/4XA-100........Filter...................................................................................................... 2
32-26........JSJ21/4XA-3226......Screw.................................................................M8x16........................ 3
32-27........SB-6MM...................Steel Ball............................................................6mm........................... 4
32-28........JSJ21/4X-83 ............O-Ring *.............................................................Ø14 x ø2.65 ............... 2
32-29........JSJ21/4XA-72..........Back Up Ring *...................................................Ø18 x ø14 x 1.5.......... 2
32-30........JSJ21/4X-75 ............Piston Pump.......................................................Ø14............................ 1
32-31........JSJ21/4X-80 ............Adaptor ................................................................................................. 1
32-32........JSJ21/4X-81 ............Spring.................................................................................................... 1
32-33........JSJ21/4X-69 ............Adjustment Screw.................................................................................. 1
32-34........JSJ21/4XA-3234......O-Ring *................................................................................................ 1
32-35........JSJ21/4XA-3235......Screw.................................................................................................... 1
32-36........JSJ21/4XA-3236......Pin......................................................................4x16........................... 1
32-37........JSJ21/4XA-3237......O-Ring *.............................................................12.5 x 1.8 ................... 1
32-38........JSJ21/4XA-3238......Release Valve Rod................................................................................ 1
32-39........JSJ21/4XA-3239......Pin......................................................................4x30 mm .................... 1
32-40........JSJ21/4XA-3240......Steel Ball............................................................5.5mm........................ 2
32-41........SB-8MM...................Steel Ball............................................................8mm........................... 2
32-42........JSJ21/4XA-3242......Square Block......................................................................................... 2
32-43........SB-10MM.................Steel Ball............................................................10mm......................... 2
32-44........JSJ21/4XA-3244......Screw.................................................................M12x16x3................... 2
32-45........JSJ21/4XA-3245......Valve Assembly..................................................................................... 1
.................JSJ21/4XA-SK.........Seal Kit (contains items with asterisk * )...................................................
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TEST CERTIFICATE
Commodity
Short Service Jack
Model
JSJ-3XA
Serial No.
Capacity
3 ton
ton
Test Load
Date of Inspection
Judgment
Inspector
PASSED
WALTER MEIER (Manufacturing) Inc.
427 New Sanford Road
LaVergne, Tennessee 37086
Phone: 800-274-6848
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