Operating Instructions
Sheet No.
12 of 12
Rev
Date: 16 July 2007
Cylinder will not advance.
Cylinder will not retract.
1. Coupling not fully mated
2. Cylinder seal leakage
3. Pump unit
4. Faulty coupling
1. Check coupling
2. Replace seal
3. Check pump unit
4. Replace coupling
Torque wrench operates
backwards
1. Reversed couplings.
1. Check pump, hose and torque
wrench for cross connection
Pressure will not build
1. Cylinder Seal leakage
2. Swivel Seal leakage
3. Defective pump unit
1. Change seals
2. Change seals
3. Check pump unitPa
Pressure builds, but wrench
does not move
1. Hose restriction
2. Coupling not fully assembled
1. Change hose
2. Fully tighten coupling
Slow torque wrench operation
1. Hose restriction
2. Coupling not fully assembled
3. Pump flow rate too small
1. Change hose
2. Fully tighten coupling
3. Use higher flow pump
Erratic or slow retraction speed
1. Hose restriction
2. Coupling not fully assembled
1. Change hose
2. Fully tighten coupling
Torque wrench does not ratchet
1. Broken drive shoe
2. Jammed drive shoe
3. Damaged ratchet
1. Replace drive shoe
2. Check drive shoe and spring
3. Check / replace ratchet
Ratchet jumps whilst driving
1. Worn / damaged ratchet
2. Worn / damaged drive shoe
3. Wrench incorrectly retracted
4. Weak / snapped drive shoe spring.
1. Replace ratchet and drive shoe
2. Replace ratchet and drive shoe
3. Allow time to fully retract.
4. Replace springs
Difficulty in hose connection
1. Pressure within hose
2. Damaged coupling
1. Vent hose
2. Replace coupling
Fault
Possible Cause
Remedy
