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5.
Twist the valve to the left slowly to allow the ram to retract. Gradually
lower the load onto the supports.
6.
Once the supports are carrying the load, open the valve to allow the ram
to retract fully.
LOWERING A LOAD
WARNING! Dynamic shock loads are created by quick opening and
closing of the release valve when lowering the load. The resulting
overload may cause the hydraulic system to failure, which could result
in severe personal injury and/or property damage.
WARNING! Before lowering the load or vehicle, ensure that there are no
obstructions underneath and that all people are standing clear.
1.
When the work is done, raise the load enough with the jack to carefully
remove the supports.
2.
Open the release valve by slowly rotating the handle counterclockwise.
The load will descend as pressure is released from the jack' s system.
Control the speed by rotating the handle.
a.
Rotate the handle counterclockwise to increase the speed.
b.
Rotate the handle clockwise to decrease the speed.
PNUEMATIC OPERATION
This long ram hydraulic jack also includes a pneumatic option for raising and
lowering the load. You will need an air source to power the long ram hydraulic
jack.
1.
Connect the air inlet fitting to the shop air supply hose quick coupler, then
turn on the air valve.
2.
Close the release valve.
3.
Press the air valve's lever to allow the air to flow into the air motor. The
ram will extend until the valve is released.
•
The jack has a bypass to prevent overextending the ram.
4.
Raise the load to the desired height, turn off the air valve and immediately
use jack stands with an adequate capacity to support the load.
5.
When work is done, raise the load enough with the jack to carefully
remove the jack stands.
Page 11
CLEVIS-BOTTOM LONG-RAM PNEUMATIC/HYDRAULIC JACK
www.princessauto.com / 1-800-665-8685
9096686
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