34
Trouble
Probable Cause Solution
Piston will not advance or
retract
Couplers are not securely
attached to the tool or pump
Check the coupler connections, and
make certain that they are connected.
Coupler is defective Replace any defective coupler.
Defective remote control
switch
Replace the switch and/or control
pendent.
Dirt in the direction-control
valve of the pump unit
Disassemble the pump, and clean the
direction-control valve.
Piston will not retract
Hose connections reversed
Make certain the advance on the
pump is connected to the advance on
the tool, and that the retract on the
pump is connected to the retract on
the tool.
Retract hose not connected Connect the retract hose securely.
Retract pin broken Replace the broken pin and/or spring.
Cylinder will not build up
pressure
Piston seal and/or end plug
Seal leaking
Replace any defective O-rings.
Coupler is defective Replace any defective coupler.
Square drive will not turn
Grease or dirt build up in the
teeth of the ratchet and
drive segment
Disassemble the ratchet and clean the
grease or dirt out of the teeth.
Worn or broken teeth on
ratchet an/or drive segment
Replace any worn or damaged parts.
Tool tightens immediately
when turned on
Hose connections are
reversed
Depress the advance button to
release the tool; shut the pump off in
the advance position and reverse the
hose connection.
Pump will not build up
pressure
Defective relief valve
Inspect, adjust or replace the relief
valve.
Clogged Filter
Inspect, clean and/or replace the
pumplter.
Electric power source is too
low
Make certain the amperage, voltage
and any extension cord size comply
with the pump manual requirements.
Defective gauge Replace the gauge.
Low oil level
Checkandllthepumpreservoir.
Pressure reading erratic Defective gauge Replace the gauge.
Nut returns with retract stroke
Ball plungers are not engaging
the drive sleeves
Thread the ball plungers to the
correct depth in the housing.
TROUBLESHOOTING GUIDE