Hitachi NH 90AB Instrucciones Y Manual De Seguridad página 17

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.
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.
Check for proper nails.
Check air pressure.
––––––––––
Driver unit worn?
O – ring worn or damaged?
Check air pressure.
Check for proper nails.
Driver unit worn?
Check inside diameter of air
hose.
— 17 —
CORRECTION
Clear a jam per page 15.
Use only recommended
nails.
Increase air pressure. (Do not
exceed 120 psi (8.3 bars,
8.5 kgf/cm 2 ))
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
Use only recommended nails.
Contact Hitachi for
replacement.
Use larger air hose.
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