Hitachi N5009AF, NT50AF manual Operator Troubleshooting

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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 -

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