Hitachi NR 83AA2 - Troubleshooting and Corrective Actions; Common Nailer Problems and Solutions

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<Magazine>
Nail feeder abnormal (burrs,
deformed, damaged).
<Nails>
The magazine is not loaded
with specified genuine nails.
Problem
Possible cause
( : most-common cause)
Inspection method Remedy
Correct the burred or
deformed portion.
Replace the defective part.
9. TROUBLESHOOTING GUIDE
9-1. Troubleshooting and Correction
1) Nails cannot
be driven.
Check if the magazine is
normally loaded with
specified nails.
Check if they move
smoothly after putting nails
and check if the nail feeder
oeprates smoothly.
Check the nail feeding
section for abnormal
conditions (burrs, fatigued,
deformed, damaged).
Check if nails can be driven
at 5 kgf/cm
2
( 4.9 bar, 70 psi ).
Use specified nails.
After removing the adhesive
fragments and wood chips,
apply oil to the nail rail and
magazine.
The magazine is loaded
with abnormal nails (bent
nails, abnormal collation,
other).
Remove the abnormal nails
and load the magazine with
normal nails.
Ribbon spring abnormal
(fatigued, damaged).
Magazine groove too wide
or too narrow.
Nail rail groove width too
wide or too narrow.
Nail groove in the nose
abnormal (burrs).
Magazine cover abnormal
(deformed, damaged).
Adhesive fragments and
wood chips are on the
magazine, nail feeder or nail
rail.
Replace the defective part.
Replace the defective part.
Replace the defective part.
Replace the defective part.
Cylinder's internal surface
abnormal (deposites of dirt,
worn).
Driver blade abnormal
(deformed, burrs,
damaged).
Cylinder ring abnormal.
(dislocated, deformed,
damaged).
Piston bumper abnormal.
Replace the piston bumper.
Reassemble or replace.
Touch up or replace.
After removing the dirt,
apply oil or replace.
Piston O-ring worn.
Air pressure too low.
Piston ring worn.
Keep the nail feeder ass'y
pulling backward and
perform idle driving. Then
check that the driver blade
returns to its original
position.
Adjust for 5 to 8.5 kgf/cm
2
(4.9 --- 8.3 bar, 7 --- 120 psi).
<Output section: Piston,
driver blade, etc.
>
Replace the Piston O-ring.
Pushing lever incorrectly
adjusted.
Check adjustment.
Adjust the protruded amount
within 3.5 0.5 mm
(0.138" 0.02").
<Pushing lever>