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

CAUSE

CORRECTIVE ACTION

QUESTION

 

 

 

 

 

Trigger valve housing

O-ring cut or cracked.

Contact Hitachi for

leaks air

 

replacement.

Trigger valve stem

O-ring/seals cut or

Contact Hitachi for

leaks air

cracked

replacement.

 

 

 

Frame/nose leaks air

Loose nose screws

Tighten and recheck.

 

 

 

 

O-ring is cut or cracked

Contact Hitachi for

 

 

 

replacement.

 

 

 

 

Piston cushion is

Contact Hitachi for

 

 

cracked/ worn

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

Use Air Tool Lubricant

 

 

cation

 

 

 

 

 

Worn head valve O-

Contact Hitachi for

 

 

rings

replacement.

 

 

 

Lack of power; slow to

Tool dry, lack of lubri

Use Air Tool Lubricant

cycle

cation

 

 

 

 

 

Broken cylinder cap

Contact Hitachi for

 

 

spring

replacement.

 

 

 

 

O-rings/seals cut or

Contact Hitachi for

 

 

cracked

replacement.

 

 

 

 

Exhaust blocked

Contact Hitachi for

 

 

 

replacement.

 

 

 

 

Dirt/tar build up on

Contact Hitachi for

 

 

driver

replacement.

 

 

 

 

Head valve dry

Contact Hitachi for

 

 

 

replacement.

 

 

 

 

Air pressure too low

Check air supply

 

 

 

equipment

 

 

 

 

 

- Continued -

— 30 —

Page 30
Image 30
Hitachi N5009AF, NT50AF manual Operator Troubleshooting, Problem or Cause Corrective Action Question