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1. Attach the twin line hose to the swivel inlets of the square drive torque wrench using the
spring–loaded quick connect ends. After making certain that they are fully engaged,
thread the safety rings tightly against the spring–loaded retainer rings.
2. Connect the opposite ends of the hose to the pump in the same manner.
SETTING THE SQUARE DRIVE FOR ROTATION
The position of the square drive when looking toward the shroud will determine if the tool is set to
tighten or loosen the nut. When the square drive extends to the left when looking at the shroud with
the inlets away from you, the tool is set to loosen the nut. When the square drive extends to the right,
the tool is set to tighten the nut. To change the direction of rotation for model 56578 56572, 56579
and 56580 simply push the square drive into the housing until the drive projects out the opposite side
of the tool. For model 56581, 56582 or 56583, loosen and remove the square drive retaining screw
and pull the square drive out of the housing. Insert the square drive into the opposite side of the
housing and secure it by installing the screw in the splined end of the drive.
SETTING THE TORQUE
After determining the desired torque, use the calibration certificate provided with the tool to
determine the pressure necessary to achieve that torque. You may also refer to the chart engraved
on the shroud of the tool or the chart provided in this manual.
1. Connect the tool to the power supply and turn the pump on.
2. Depress the remote control button causing the pressure to be shown on the gauge.
3. Adjust the pressure of the pump.
4. When the desired pressure is reached, cycle the tool again to confirm that the desired
pressure setting has been obtained.
SETTING THE REACTION ARM
The function of a reaction device is to hold the tool in position against the forces generated to
tighten or loosen bolts or nuts. Hydraulic wrenches generate tremendous force.
WARNING
An improperly positioned reaction arm may result in operator injury or damage tooling.
Square Drive Hydraulic Wrench Reaction Points (Dwg.01)
PLACING THE TOOL IN SERVICE
CONNECTING THE TOOL
ADJUSTMENTS
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