Hitachi NT 50A5 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?
Feed spring weakened or damaged? Replace feed spring.
Check for proper nails.
Check air pressure.
Check position of nailing depth
adjuster.
——————
Driver blade worn?
Piston O-ring worm or damaged?
Check air pressure.
Check position of nailing depth
adjustment.
Check for proper nails.
Nail feeder damaged?
Feed spring weakened or damaged? Replace feed spring.
Piston O-ring worn or damaged?
Check for proper nails.
Driver blade worn?
Check inside diameter of air hose.
CORRECTION
Clear a jam page 19.
Replace nail feeder.
Use only recommended nails.
Increase air pressure.
(Do not exceed 120 psi
(8.3 bar 8.5 kgf/cm ))
2
Readjust per page 17.
Use Hitachi pneumatic tool lubricant.
Contact Hitachi for replacement.
Reduce air pressure.
(Adjust 70 – 120 psi
(4.9 – 8.3bar 5 – 8.5 kgf/cm
Readjust per page 17.
Use only recommended nails.
Replace nail feeder.
Contact Hitachi for replacement.
Use only recommended nails.
Contact Hitachi for replacement.
Use larger air hose.
English
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