Westward 3ZC66 Instructions for use

Westward Hydraulic
Service Jacks
Operating Instructions & Parts Manual 3ZC66, 3W927, 3W928 and 5M455 thru 5M457
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described.
Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or
property damage! Retain instructions for future reference.
®
Description
Westward hydraulic service jacks are used for lifting part of a total vehicle (i.e., one
wheel). Jacks are equipped with a built-in by-pass device to prevent damage to
jack from overpumping. An internal safety valve prevents damage to jack from
overloading. Applications include automotive, truck, farm, industrial and
construction. Air models feature a powerful air motor, for effortless lifts of rated
loads, conventional foot pumping and handle pumping. These jacks are designed
to meet applicable ASME/ANSI Standards.
Specifications Min. Max.
Model Capacity Length Height Height
3W927 4 Ton 50 5/8" 5" 24"
3ZC66 555 3/47 27
3W928 10 54 3/47 27
5M455 (air model) 450 5/85 24
5M456 (air model) 557 3/47 27
5M457 (air model) 10 54 3/47 27
General Safety Information
Study, understand,
and follow all
instructions before operating this
device. Lifting device only. Intended
use is for lifting part of a total vehicle,
only one wheel or axle at a time.
Immediately after lifting, support
vehicle with appropriate means. Do
not exceed rated capacity. Use only on
hard, level surfaces capable of
sustaining rated capacity loads. Lift
only on those areas of the vehicle as
specified by the vehicle manufacturer.
Ensure that the lift point is properly
centered on the jack saddle. Always
wear safety glasses when using this
equipment. Inspect jack before each
use. Do not use if bent, broken,
leaking, or damaged components are
noted. No alteration of this product is
allowed. Do not use this device for
any purpose other than that for which
it was intended. Failure to heed any
one or combination of these warnings
may result in severe personal injury
and/or property damage.
Assembly
Use figure 1 as reference.
1. Assemble the handle to handle
socket by inserting the handle piece
into the socket; align the handle
with jack chassis, then tighten the
hexagon nut securely.
2. Try to operate the release
mechanism by turning the release
knob located on top of the handle
clockwise and counterclockwise to
see if release shaft fits together well.
3. Occasionally, hydraulic jacks become
air bound and will not function
properly. To correct this condition,
remove oil filler plug. This will allow
any pressurized air to escape. Check
for proper oil level (see Adding Oil,
page 2), adjust as needed. DO NOT
OVERFILL! Reinstall oil filler plug.
4. Pour a teaspoon of air tool lubricant
into air supply inlet of air control
valve. Connect to air supply and
operate for 3 seconds to evenly
distribute lubricant.
5. Squirt a small amount of hydraulic
jack oil on pistons and thoroughly
lubricate all moving parts of jack.
Operation Off-centered loads
and loads lifted
while jack is not level may damage the
jack or cause personal injury.
LIFTING
1. Prevent inadvertent vehicle
movement by fully engaging
emergency brake, putting
transmission in park. Use wheel
chocks in pairs on the wheel
diagonally opposed to the wheel or
axle lifted.
2. Close release valve by turning the
release knob on top of handle
clockwise until it is firmly closed.
3. Position jack under load and align to
the lift point suggested by vehicle
manufacturer.
4. Operate jack by pumping the
handle, foot pedal, or squeezing the
lift control valve until saddle
contacts load point. Ensure load is
centered on saddle. Then operate
jack until load reaches desired
height.
Release Knob
Air Control Valve
(for air models only)
Foot Pedal
Saddle
Figure 1 — Hydraulic Service Jack Components
SHI 009
Printed in Taiwan
02/05

Operation (Continued)
NOTE: Never use foot pedal to raise
load. This is a lifting
device only. The
load must be supported immediately by
other appropriate means.
LOWERING Keep hands, feet,
and clutter clear of
ground area when lowering the load.
SLOWLY open the release valve by
turning the handle knob
counterclockwise. Avoid shock loads
created by quickly
opening and closing the release valve
as the load is being lowered. Shock
loads can create dangerously high
operating pressures within the
hydraulic system, causing system
failure and resulting in personal injury
and/or property damage.
Maintenance
IMPORTANT: When adding or
replacing oil, always use a good grade
hydraulic jack oil. Do not use hydraulic
brake fluid, alcohol, glycerine,
detergent motor oil or dirty oil.
Improper fluid can cause serious
internal damage to the jack rendering it
inoperative.
ADDING OIL
1. Position the jack on level ground and
fully lower the saddle. Remove oil
filler plug.
2. Fill oil to within 3/8” of filler hole.
DO NOT OVERFILL! If overfilled, the
jack will not lower to published
minimum height. If underfilled, the
jack will not reach published
maximum height. Adjust fluid level
as needed. Always reinstall oil filler
plug before use.
REPLACING OIL
1. Remove oil filler plug.
2. Turn jack over and drain old oil out
through oil filler plug hole.
3. Refill with new oil through the oil
filler plug hole.
IMPORTANT: Do not allow dirt or other
foreign material to enter the hydraulic
system when filling.
4. After refilling, remove air from
system by opening release valve and
rapidly pumping handle several
times. Reinstall oil filler plug when
done.
LUBRICATION
1. For all models, add lubricating oil to
all moving parts as needed.
2. Models 3ZC66, 3W927, 3W928. Apply
grease to grease fittings periodically.
3. Models 5M455, 5M456, 5M457. Pour
air tool lubricant into the air supply
inlet at air control valve periodically.
PREVENTING RUST
1. Check ram and piston periodically for
signs of corrosion. Clean as needed
with an oily cloth.
2. When not in use, store jack with
saddle and piston fully retracted.
2
Westward Operating Instructions and Parts Manual
Westward Hydraulic Service Jacks
®
3ZC66, 3W927, 3W928 and 5M455 thru 5M457
Troubleshooting Chart
Jack will not lift load 1. Release valve not tightly closed 1. Ensure release valve tightly closed
2. Overload condition 2. Remedy overload condition
3. Pressure of air supply is too low 3. Change to a suitable air source
(for air models)
Jack bleeds off after lift 1. Same as above 1. Same as above
2. Hydraulic unit malfunctioning 2. Replace
Jack will not lower after unloading 1. Reservoir overfilled 1. Drain fluid to proper level
2. Linkages binding 2. Clean and lubricate moving parts
Poor lift performance 1. Fluid level low 1. Ensure proper fluid level
2. Air trapped in system 2. With ram fully retracted, remove oil
filler plug to let pressurized air
escape, reinstall oil filler plug
Will not lift to full height Fluid level low Ensure proper fluid level
Symptom Possible Cause(s) Corrective Action

3
Westward Operating Instructions and Parts Manual
For Reair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
1 * Power Unit 42301 42501 41001 1
2Saddle 42302 42502 41002 1
3Front Wheel Assembly 42303 42503 41003 2
4Handle Set 42304 42504 41004 1
5Rear Caster 42305 42505 41005 2
6Oil Filler Plug 42306 42506 41006 1
7Return Spring 42307 42507 41007 1
8Release Valve Cable 42308 42508 41008 1
9Piston Links 42309 42509 41009 1
10 Greasing Nipple 42310 42510 N/A 1
11 Foot Pedal 42311 42511 41011 1
(*) No repair parts available for power unit.
Reference Part Number For Models:
Number Description 3W927 (4 Ton) 3ZC66 (5 Ton) 3W928 (10 Ton) Quantity
3ZC66, 3W927, 3W928 and 5M455 thru 5M457
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.
2
3
7
5
1
9
8
10 6
4
11
Repair Parts List
Figure 2 — Repair Parts Illustration for Models 3ZC66, 3W927 and 3W928
LIMITED WARRANTY
WESTWARD ONE-YEAR LIMITED WARRANTY.Hydraulic Service Jacks, Models covered in this manual, are warranted by Westward to the original user against defects in workmanship or
materials under normal use for one year after date of purchase. For limited warranty claim procedures, see PROMPT DISPOSITION below. This limited warranty gives purchasers specific legal rights
which vary from jurisdiction to jurisdiction.
LIMITATION OF LIABILITY.To the extent allowable under applicable law, Westward's liability for consequential and incidental damages is expressly disclaimed. Westward’s liability in all events is
limited to and shall not exceed the purchase price paid.
WARRANTY DISCLAIMER.Westward has made a diligent effort to provide product information and illustrate the products in this literature accurately; however, such information and
illustrations are for the sole purpose of identification, and do not express or imply a warranty that the products are MERCHANTABLE, or FIT FOR A PARTICULAR PURPOSE, or that the products will
necessarily conform to the illustrations or descriptions.
Except as provided below, no warranty or affirmation of fact, expressed or implied, other than as stated in the "LIMITED WARRANTY" above is made or authorized by Westward.
PRODUCT SUITABILITY. Many jurisdictions have codes and regulations governing sales, construction, installation, and/or use of products for certain purposes, which may vary from those in
neighboring areas. While Westward attempts to assure that its products comply with such codes, it cannot guarantee compliance, and cannot be responsible for how the product is installed or
used. Before purchase and use of a product, review the product applications, and all applicable national and local codes and regulations, and be sure that the product, installation, and use will
comply with them.
Certain aspects of disclaimers are not applicable to consumer products; e.g., (a) some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitation or exclusion may not apply to you; (b) also, some jurisdictions do not allow a limitation on how long an implied warranty lasts, consequentially the above limitation may not apply to
you; and (c) by law, during the period of this Limited Warranty, any implied warranties of implied merchantability or fitness for a particular purpose applicable to consumer products purchased by
consumers, may not be excluded or otherwise disclaimed.
PROMPT DISPOSITION. Westward will make a good faith effort for prompt correction or other adjustment with respect to any product which proves to be defective within limited warranty. For
any product believed to be defective within limited warranty, first write or call dealer from whom the product was purchased. Dealer will give additional directions. If unable to resolve
satisfactorily, write to Westward at address below, giving dealer's name, address, date, and number of dealer's invoice, and describing the nature of the defect. Title and risk of loss pass to buyer
on delivery to common carrier. If product was damaged in transit to you, file claim with carrier.
Manufactured for Grainger International, 100 Grainger Pkwy., Lake Forest, Illinois 60045 U.S.A.

1 * Power Unit 2204101 2205101 2210101 1
2Oil Filler Plug 2204102 2205102 2210102 1
3Return Spring 2204103 2205103 2210103 1
4Release Valve Cable 2204104 2205104 2210104 1
5Piston Links 2204105 2205105 2210105 1
6 * Air Motor 24101-G24 24101-G24 24101-A27 1
7Air Hose 24102 24102 24102 1
8Air Control Valve 24103 24103 24103 1
9Handle Set 2204109 2205109 2210109 1
10 Hose Clamp 2204110 2205110 2210110 1
11 Greasing Nipple 2204111 2205111 N/A 1
12 Saddle 2204112 2205112 2210112 1
13 Front Wheel Assembly 2204113 2205113 2210113 2
14 Rear Caster 2204114 2205114 2210114 2
15 Foot Pedal 2204115 2205115 2210115 1
16 Swivel Manifold 24104A 24104A N/A 1
* No repair parts available for power unit or air motor.
Reference Part Number For Models:
Number Description 5M455 (4 Ton) 5M456 (5 Ton) 5M457 (10 Ton) Quantity
Westward Operating Instructions and Parts Manual 3ZC66, 3W927, 3W928, and 5M455 thru 5M457
Repair Parts List
Manufactured for Grainger International, Inc.,
Lake Forest, IL 60045 U.S.A.
Figure 3 — Repair Parts Illustration for Models 5M455, 5M456 and 5M457
For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
1
4
5
8616
7
14 15
10
11
13
12
9
3
2
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts Operations
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.