H8508 Hydraulic Impact Wrench
Greenlee / A Textron Company
16
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
Troubleshooting (cont’d)
PROBABLE CAUSE
PROBLEM
POSSIBLE REMEDY
Tool leaks hydraulic fluid.
Tool components loose.
Tighten component hardware.
Worn or damaged O-rings or gaskets.
Replace worn or damaged O-rings
or gaskets.
Tool components worn or damaged.
Disassemble tool. Replace worn or
damaged components.
Tool trigger plunger sticks or
Check for dirt or gummy deposits.
Clean components.
works hard.
Trigger binding (trigger bent, trigger
Inspect, adjust trigger where binding
pivot pin too tight, etc.).
occurs.
Power source works, but tool
Inappropriate hydraulic system.
Check type of hydraulic power source.
lacks power or does not operate.
open-center or closed-center.
Power source works, but tool
Relief valve setting in tool not correct.
Return tool to factory for service.
lacks power and/or impacts
slowly.
Tool appears to operate
Impact mechanism dry. Grease has
Regrease impact mechanism.
normally but lacks impact
been thrown off.
See the Maintenance Schedule section
power or does not drill.
of this manual.
Incorrect grease or overpacked.
Regrease impact mechanism.
See the Maintenance Schedule section
of this manual.
Grease leaks at anvil
Heavy duty cycle, heat caused
Normal, mechanism may require
bushing, wrench warm.
grease to liquify.
grease more often, see the
Maintenance Schedule section of
this manual.