Hitachi NT 65MA4 Instruction And Safety Manual page 21

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
Nailer operates, but no nail is
driven.
Weak drive.
Slow to cycle.
Drives too deep.
Skipping nails.
Intermittent feed.
Nails jam.
Driven nail is bent.
Drives properly during normal
operation, but does not drive
fully at faster nailing speeds.
CHECK METHOD
Check for a jam.
Nail feeder damaged?
Ribbon spring weakend or
damaged?
Check for proper nails.
Check air pressure.
Check position of nailing
depth adjustment adjuster.
———
Driver blade worn?
Piston O-ring worm or
damaged?
Check air pressure.
Check position of nailing
depth adjustment guide plate
(A).
Check for proper nails.
———
Nail feeder damaged?
Ribbon spring weakend or
damaged?
Piston O-ring worn or
damaged?
Check for proper nails.
———
Driver blade worn?
Check inside diameter of air
hose.
CORRECTION
Clear a jam page 18.
Replace nail feeder.
Replace ribbon spring.
Use only recommended nails.
Increase air pressure.
(Do not exceed 120 psi (8.3
bar 8.5 kgf/cm ))
2
Readjust per page 15.
Use Hitachi pneumatic tool
lubricant.
Contact Hitachi for
replacement.
Reduce air pressure.
(Adjust 70 – 120 psi
(4.9 – 8.3 bar 5 – 8.5 kgf/cm
Readjust per page 15.
Use only recommended nails.
Lubricate the nail rail per page
18.
Replace nail feeder.
Replace ribbon spring.
Contact Hitachi for
replacement.
Use only recommended nails.
Lubricate the nail rail per page
18.
Contact Hitachi for
replacement.
Use larger air hose.
English
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