Hitachi NR 65AK Service Manual page 23

Problem
(
<Driver blade is not returned
4) Nails jam.
completely.>
(continued)
See item "1) Output section:
piston, driver blade, etc.".
Air pressure is too high.
Possible cause
: Most-common cause)
Inspection method
Perform idle or actual
driving to check if the driver
blade is returned
completely.
Nails may be jammed if
driven at a high pressure
and high speed. Check
pressure and driving speed.
--- 19 ---
Remedy
See item "1) Output section:
piston, driver blade, etc.".
Adjust the air pressure to
4.9 - -- 8.3 bar (5 -- 8.5 kgf/cm
70 --120 psi).
2
,