SPX TWSD Series - Troubleshooting

19
© SPX
Form No. 1000528
Rev. 1 December 2, 2011
Troubleshooting
Fault Possible Cause Remedy
Cylinder will not advance.
Cylinder will not retract.
Coupling not fully mated.1.
Cylinder seal leakage.2.
Pump unit.3.
Faulty coupling.4.
Check coupling.1.
Replace seal.2.
Check pump unit.3.
Replace coupling.4.
Torque wrench operates
backwards.
Reversed couplings.1. Check pump, hose, and 1.
torque wrench for cross
connection.
Pressure will not build. Cylinder seal leakage.1.
Swivel seal leakage.2.
Defective pump unit.3.
Change seals.1.
Change seals.2.
Check pump unit.3.
Pressure builds, but wrench
does not move.
Hose restriction.1.
Coupling not fully 2.
assembled.
Change hose.1.
Fully tighten coupling.2.
Slow torque wrench operation. Hose restriction.1.
Coupling not fully 2.
assembled.
Pump ow rate too small.3.
Change hose.1.
Fully tighten coupling.2.
Use higher ow pump.3.
Erratic or slow retraction
speed.
Hose restriction.1.
Coupling not fully 2.
assembled.
Change hose.1.
Fully tighten coupling.2.
Torque wrench does not
ratchet.
Broken drive shoe.1.
Jammed drive shoe.2.
Damaged ratchet.3.
Replace drive shoe.1.
Check drive shoe and 2.
spring.
Check/replace ratchet.3.
Ratchet jumps while driving. Worn/damaged ratchet.1.
Worn/damaged drive shoe.2.
Wrench incorrectly 3.
retracted.
Weak/snapped drive shoe 4.
spring.
Replace ratchet and drive 1.
shoe.
Replace ratchet and drive 2.
shoe.
Allow time to fully retract.3.
Replace springs.4.
Difculty in hose connection. Pressure within hose.1.
Damaged coupling.2.
Vent hose.1.
Replace coupling.2.