Westward Hydraulic
Service Jacks
Operating Instructions & Parts Manual 1ZKX4, 1ZKX5, 1ZKX6, 1ZKX9, 5M455A and 5M456A
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). These 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 ANSI/
PALD Standards. RECOMMENDED AIR SUPPLY: 110-175 PSI at 7.8 CFM.
Specifications
Min. Max.
Model Capacity Length Height Height
1ZKX4 4 Ton 47-
7
/8" 5"” 24"
5M455A (air model) 4 Ton 50-
5
/8" 5" 24”
1ZKX6 5 Ton 55-
5
/8" 7" 27"
5M456A (air model) 5 Ton 55-
5
/8" 7" 27"
1ZKX5 10 Ton 55" 7-
1
/8" 27-
1
/8"
1ZKX9 (air model) 10 Ton 55" 7-
1
/8" 27-
1
/8"
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.
Before Use
1. Secure handle into handle sleeve
with bolt provided. Tighten securely to
prevent accidental removal of handle
while in use.
2. Ensure that release mechanism is
properly connected by turning the
release knob clockwise and counter-
clockwise.
3. With saddle fully lowered, remove oil
filler plug/screw to allow any trapped
air to escape. Ensure that oil level is
within
3
/8” from filler hole. Reinstall oil
filler plug/screw.
4. On air models, 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. To prevent inadvertent vehicle
movement, fully engage emergency
brake, put transmission gear in park.
2. Close release valve by turning the
release knob clockwise firmly. Center
jack saddle under lift point suggested
by vehicle manufacturer.
3. Pump the handle or foot pedal until
saddle contacts lift point. Ensure that
load is centered on saddle.
4. To lift, pump handle or squeeze air
control valve (air model) until load
reaches desired height.
NOTE: Never use foot pedal to raise
load. The jack is equipped with a handle
position lock. To release, pull lever
up, then back until lever is locked into
place. This will allow full range of handle
movement.
This is a lifting
device only. The
load must be supported immediately by a
pair of appropriately rated jack stands.
Release Knob
Air Control Valve
(for air models only)
Foot Pedal
Saddle
Figure 1 — Hydraulic Service Jack Components
SHI 009
Printed in China
10/10
Handle Sleeve
Handle Position Release
Front Wheel
Caster
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