Troubleshooting Guide; Troubleshooting And Correction - Hitachi N 5008AC Technical And Service Manual

9. TROUBLESHOOTING GUIDE

9-1. Troubleshooting and Correction

Problem
(
1) Staples
<Staples>
cannot
The magazine is not loaded
be driven.
with specified genuine
staples.
The magazine is loaded
with abnormal staples (bent
staples, abnormal collation,
other).
< Magazine >
Staple feeder abnormal
(burrs, deformed,
damaged).
Ribbon spring abnormal
(fatigued, damaged).
Staple rail width too wide.
Magazine cover abnormal
(deformed, damaged).
Adhesive fragments and
wood chips are on the
magazine, staple feeder or
staple rail.
< Output section: Piston,
driver blade, etc. >
Air pressure too low.
Piston O-ring worn.
Piston bumper abnormal.
Cylinder ring abnormal.
(dislocated, deformed,
damaged).
Driver blade abnormal
(deformed, burrs,
damaged).
Cylinder's internal surface
abnormal (deposites of dirt,
worn).
< Pushing lever >
Pushing lever incorrectly
adjusted.
Possible cause
: most-common cause)
Inspection method
Check if the magazine is
normally loaded with
specified staples.
Check the staple feeding
section for abnormal
conditions (burrs, fatigued,
deformed, damaged).
Check if they move
smoothly after putting
staples and check if the
staple feeder operates
smoothly.
Keep the staple feeder
ass'y pulling backward and
perform idle driving. Then
check that the driver blade
returns to its original
position.
Check if staples can be
2
driven at 5 kgf/cm (4.9 bar,
70 psi).
Check adjustment.
--- 13 ---
Remedy
Use specified staples.
Remove the abnormal
staples and load the
magazine with normal
staples.
Correct the burred or
deformed portion.
Replace the defective part.
Replace the defective part.
Replace the defective part.
Replace the defective part.
After removing the adhesive
fragments and wood chips,
apply oil to the staple
feeder.
Adjust for 5 to 8.5 kgf/cm
(4.9 --- 8.3 bar, 7 --- 120 psi).
Replace the piston O-ring.
Replace the piston bumper.
Reassemble or replace.
Touch up or replace.
After removing the dirt,
apply oil or replace.
Adjust the protruded amount
within 4.5 0.5 mm
(0.177" 0.02").
2