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RULES FOR SAFE OPERATION
IMPORTANT:
Sometimes during shipment and/or
handling, air gets into the hydraulic system, causing
poor lifting performance.
This is indicated by a
springy feet as you pump the jack under a load.
PURGE ANY AIR FROM THE SYSTEM by simply
opening Release Valve (turn handle counter-clock-
wise) and operate pump handle rapidly several times.
Raising the Jack
1. Close Release Valve TIGHTLY
(by turning handle
clockwise)
2. Position jack under load so that saddle will contact
load firmly and is centered so it cannot slip.
3. Operate jack handle until saddle approaches contact
with load. Once again check to see that saddle is cor-
rectly positioned.
4. Raise load to desired height. Transfer to Jack Stands
if load is to be held up for an extended period.
Lowering
the Jack
Open Release Valve VERY SLOWLY (by turning handle
counter-clockwise).
When Release Valve is opened,
saddle can be easily lowered by the spring tension inside
the frame.
CAUTION:
Keep hands or feet away from the hinge
mechanism of the jack.
Operating
Principles
With ReleaseValve TIGHTLY
CLOSED:
1. Upward stroke draws oil from Reservoir Tank into
Plunger
Cavity.
Hydraulic
pressure keeps Valve
closed, keeping oil in cylinder.
2. Downward stroke of Plunger forces oil into Cylinder.
Ram is forced out, raisingsaddle.
if load exceeds rated capacity, oil is automatically
released back into Reservoir thru Safety Overload
Valve.
3. When Ram reaches maximum
stroke,
oil is by-passed
back
into
Reservoir,
thus
preventing
overextended
Ram Stroke.
When Release Valve
is opened,
oil is allowed
to flow
back into
Reservoir,
releasing hydraulic
pressure
on
Ram and permitting
saddle go be lowered.
JACK
RELEASE
VALVE
GEAR
REAR
ASSEMBLY
GENE RA L
NOMENCLA
TURE
Fig. 1
FRONT
WHEEL
ASSEMBLY
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