Filter
Top Products
— 30 —
English
Operator Troubleshooting
Most minor problems can be resolved quickly and easily using
the table below.
If problems persist, contact a Hitachi authorized service center
for assistance.
PROBLEM OR
QUESTION
CAUSE CORRECTIVE ACTION
Trigger valve housing
leaks air
O‑ring cut or cracked. Contact Hitachi for
replacement.
Trigger valve stem
leaks air
O‑ring/seals cut or
cracked
Contact Hitachi for
replacement.
Frame/nose leaks air Loose nose screws Tighten and recheck.
O‑ring is cut or cracked Contact Hitachi for
replacement.
Piston cushion is
cracked/ worn
Contact Hitachi for
replacement.
Frame/cap leaks air Damaged seal Contact Hitachi for
replacement.
Loose cap screws Tighten and recheck.
Failure to cycle Air supply restriction Check air supply
equipment
Tool dry, lack of lubri‑
cation
Use Air Tool Lubricant
Worn head valve O‑
rings
Contact Hitachi for
replacement.
Lack of power; slow to
cycle
Tool dry, lack of lubri‑
cation
Use Air Tool Lubricant
Broken cylinder cap
spring
Contact Hitachi for
replacement.
O‑rings/seals cut or
cracked
Contact Hitachi for
replacement.
Exhaust blocked Contact Hitachi for
replacement.
Dirt/tar build up on
driver
Contact Hitachi for
replacement.
Head valve dry Contact Hitachi for
replacement.
Air pressure too low Check air supply
equipment
‑ Continued ‑