Overhaul Instructions

Connect the wrench to a pump.

Pressure test to make sure that all mechanisms function as expected.

Investigate any malfunctions or hydraulic leaks.

Depressurize the system and disconnect all couplings.

Disassemble the wrench. See section Dismantling/Assembling Instructions.

Replace all seals and springs.

Replace the drive pin.

Replace any other components showing signs of damage or wear.

Relubricate and reassemble the wrench. See section Dismantling/Assembling Instructions.

Pressure test and make sure that all mechanisms function as expected.

Calibrate the wrench and make sure that the torque output is as expected.