OTC 1517B Mode D'emploi page 3

Parts List & Operating Instructions
Setup
The pump may be operated in a horizontal position or in a vertical position with the head pointing
down.
1. Assemble the hose between the pump and ram.
2. Determine the appropriate attachment for your application; assemble the attachment to the
ram piston.
CAUTION:
•
The use of extension tubes or off-center attachments greatly reduces the capacity of
the hydraulic system. When using extension tubes, put the shortest tubes on the ends
of the setup; never put the shortest tubes in the middle of the setup.
•
Some components in this set do not match the maximum pressure rating of the pump and
ram. USE A PRESSURE GAUGE IN THE SYSTEM TO MONITOR HYDRAULIC PRESSURE.
Refer to the instructions in this document for Typical Applications and Load Capacities.
Operation
1. Turn the pump's release valve clockwise to a closed position. CAUTION: Hand tighten the valve only;
applying too much force to the valve may damage the valve stem.
2. Work the pump handle up and down to send oil through the hose to the ram, causing the piston to extend
to the work piece.
3. Monitor the pressure gauge while completing the application.
Note: The pump is equipped with an overload valve that will bypass oil back into the pump reservoir in an
overload situation (when the system meets maximum pressure). In this case, continued pumping will have no
effect on the system. If an overload situation commonly occurs, a higher capacity set is needed.
4. To release pressure, slowly turn the release valve counterclockwise. (The release speed is controlled by
how fast the valve is opened.)
Bleeding Air from the System
Air can accumulate in the hydraulic system during the initial setup or after prolonged use, causing the ram to
respond slowly or in an unstable manner. To remove the air:
1. Place the ram at a lower level than the pump, with the piston end pointing down.
2. Extend and retract the ram several times without putting a load on the system. Air will be released into the
pump reservoir.
3. With the ram fully retracted, the pump sitting level, and no pressure in the hydraulic system, remove the
pump's filler screw. Fill the reservoir with approved hydraulic fluid until the fluid level is within ½-inch (12.7
mm) from the top of the reservoir.
Operating Instructions
Form No. 578089
2 of 3
Sheet No.
Issue Date: Rev. B, August 15, 2017