14
PROBLEM
CAUSE
SOLUTION
Tool does not run.
Power unit not functioning.
Check power unit for proper
fl owand pressure 7-9gpm/26-34
lpm, 2000 psi/140 bar for 8 gpm
model.
Check power unit for proper fl ow
and pressure 4-6gpm/15-23
lpm, 2000 psi/140 bar for 5 gpm
model.
Couplers or hoses blocked.
Remove restriction.
Presssure and return line hoses
reversed at ports.
Be sure hoses are connected to
their proper ports.
Mechanical failure of piston or
shuttle valve.
Have inspected and repaired by
authorized dealer.
Tool does not hit effectively.
Power unit not functioning.
Check power unit for proper fl ow
and pressure 7-9gpm/26-34
lpm, 2000 psi/140 bar for 8 gpm
model.
Check power unit for proper fl ow
and pressure 4-6gpm/15-23
lpm, 2000 psi/140 bar for 5 gpm
model.
Couplers or hose blocked.
Remove restriction.
Fluid too hot
Provide cooler to maintain
proper fl uid temperature. (above
140
°
F / 60
°
C).
Incorrect tool bit .
Ensure tool bit meets specifi ca-
tions.
Tool operates slow.
Low oil fl ow from power unit.
Check power source for proper
fl ow.
High backpressure.
Check hydraulic system for
excessive backpressure and cor-
rect as required.
TROUBLESHOOTING
If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem.
When diagnosing faults in operation of the tool, always make sure the hydraulic power source is supplying the
correct hydraulic fl ow and pressure as listed in the table. Use a fl owmeter known to be accurate. check the fl ow
with the hydraulic fl uid temperature at least 80
o
F/27
o
C.
