Hitachi NR90AD Instruction Manual - Page 17

If problems persist, contact a Hitachi authorized service center for assistance. - driver

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English Maintenance chart ACTION Drain air line filter daily. Keep lubricator filled. Clean filter element - then blow air through filter in direction opposite to normal flow. Clean magazine and feeder mechanism. Keep push lever working properly. Lubricate the Nailer after nailing. Drain air compressor. WHY Prevent accumulation of moisture and dirt. Keep the Nailer lubricated. Prevent clogging of filter with dirt. Prevent a jam. Promote operator safety and efficient Nailer operation. Extend the Nailer life. Keep the Nailer operated properly. HOW Open manual petcock. Fill with Hitachi pneumatic tool lubricant. Follow manufacturer's instructions. Blow clean daily. Blow clean daily. Supply 5 - 10 drops of lubricant into the Nailer. Open petcock on air compressor tank. 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. Check function of nail feeder per page 16. Ribbon spring weakened or damaged? Check for proper nails. Check air pressure. --- Driver blade worn? Piston O - ring worn or damaged? Check air pressure. Check for proper nails. Check function of nail feeder per page 16. Ribbon spring weakened or damaged? --- Piston O - ring cut or heavily worn? Nail feeder (A) worn or damaged? Check for proper nails. Driver blade worn? Nail feeder (A) worn or damaged? Check inside diameter of air hose. CORRECTION Clear a jam. Clean and lubricate. Replace ribbon spring. Use only recommended nails. Increase air pressure. (Do not exceed 120 psi (8.3 bars, 8.5 kgf/cm2)) Use Hitachi pneumatic tool lubricant. Contact Hitachi for replacement. Reduce air pressure. (Adjust 70 - 120 psi) Use only recommended nails. Clean and lubricate. Replace ribbon spring. Use Hitachi pneumatic tool lubricant. Contact Hitachi for replacement. Replace nail feeder (A). Use only recommended nails. Contact Hitachi for replacement. Replace nail feeder (A). Use larger air hose. - 17 -

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17
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English
Maintenance chart
ACTION
WHY
HOW
Drain air line filter daily.
Prevent accumulation of moisture
Open manual petcock.
and dirt.
Keep lubricator filled.
Keep the Nailer lubricated.
Fill with Hitachi pneumatic tool
lubricant.
Clean filter element
—
then blow
Prevent clogging of filter with dirt.
Follow manufacturer
’
s instructions.
air through filter in direction
opposite to normal flow.
Clean magazine and feeder
Prevent a jam.
Blow clean daily.
mechanism.
Keep push lever working properly.
Promote operator safety and
Blow clean daily.
efficient Nailer operation.
Lubricate the Nailer after nailing.
Extend the Nailer life.
Supply 5
–
10 drops of lubricant
into the Nailer.
Drain air compressor.
Keep the Nailer operated properly.
Open petcock on air compressor tank.
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
CORRECTION
Check for a jam.
Clear a jam.
Check function of nail feeder per
Clean and lubricate.
page 16.
Ribbon spring weakened or damaged?
Replace ribbon spring.
Check for proper nails.
Use only recommended nails.
Check air pressure.
Increase air pressure. (Do not
exceed 120 psi (8.3 bars, 8.5 kgf/cm
2
))
———
Use Hitachi pneumatic tool lubricant.
Driver blade worn?
Piston O
–
ring worn or damaged?
Contact Hitachi for replacement.
Check air pressure.
Reduce air pressure.
(Adjust 70
–
120 psi)
Check for proper nails.
Use only recommended nails.
Check function of nail feeder per
Clean and lubricate.
page 16.
Ribbon spring weakened or damaged?
Replace ribbon spring.
———
Use Hitachi pneumatic tool lubricant.
Piston O
–
ring cut or heavily worn?
Contact Hitachi for replacement.
Nail feeder (A) worn or damaged?
Replace nail feeder (A).
Check for proper nails.
Use only recommended nails.
Driver blade worn?
Contact Hitachi for replacement.
Nail feeder (A) worn or damaged?
Replace nail feeder (A).
Check inside diameter of air hose.
Use larger air hose.