910088
1-inch Hydraulic Impact Wrench
racinerailroad.com
racinerailroad.co.uk
3.2023 Rev 2.3
Original Instructions
Page
19
of
25
Troubleshooting Continued
Problem
Cause
Possible Solution
Poor impact performance.
Pressure and return hoses
reversed.
Correct for proper flow direction.
Worn impact components.
Disassemble front half of impact
and check for damaged or
severely worn parts.
Incorrect grease.
Remove and clean impact head
(see maintenance section for
procedures).
Lubricated bolt head.
Remove grease and lubricate
threads only.
Improper socket or adapters.
Check socket and limit adapters
to as few as possible.
Cold hydraulic fluid.
Allow power source to warm up.
Trigger hard to pull.
Back pressure too high.
Should not exceed 250 psi / 17
Bar and 10 gpm / 38 lpm.
Dirty spool.
Remove and clean spool and
replace O-rings and backups.
Control linkage.
Inspect linkage between trigger
and valve spool.
Hydraulic fluid leaks between
motor and manifold block.
Damaged seal.
Disassemble tool and replace
seal.
Hydraulic fluid leaks between
adapter and motor.
Damaged shaft seal.
Split tool between adapter and
motor and replace seal.
Hydraulic fluid leaks from control
spools.
Damaged seals.
Replace all O-rings and backups
on leaking spool.
Grease leaks between impact
head and adapter.
Loose fasteners.
Tighten bolts.
Grease leaks around impact
drive shaft.
Heavy duty use.
Normal due to heat buildup.
Impact mechanism over greased. Wipe clean until grease stops
leaking, adjust greasing
maintenance to match duty cycle.
Grease leaks around impact
drive shaft when cold.
Anvil bushing worn.
Replace anvil bushing.