Hitachi N 5008AC Technical And Service Manual page 17

Problem
(
Staples are not fully fed into
2) Staples bent
the injection port.
while being
driven.
Unspecified staples used.
Driver blade worn.
The material being driven
into is very hard.
3) The staple is
Air pressure too low.
driven into the
material but
the head is
raised above
The material being driven
the surface.
into is very hard.
Driver blade worn.
Piston O-ring abnormal
(worn, damaged).
Cylinder's internal surface
abnormal (worn, rough).
4) Staples clog Unspecified staples used.
the
mechanism.
< Improper staple feed >
See <Magazine> in item 1).
Driver blade worn.
< The driver blade has not
returned completely. >
See <Output section:
Piston, driver blade, etc.>
in item 1).
Possible cause
: most-common cause)
Inspection method
See item 1).
See item 1).
Check if the driver blade tip
is abnormally worn.
Check if a staple is bent
even when driven into soft
wood.
Drive the staple into soft
wood and check if the head
is raised or not.
Check if the driver blade tip
is worn.
Disassemble the output
section and check the
piston O-ring and the
internal surface of the
cylinder for abnormal
condition.
Check if the staples are
specified ones.
Check if they move
smoothly after putting
staples, and check if the
staple feeder operates
smoothly.
Check if the driver blade tip
is worn.
Perform idle driving or
actually drive with staples,
and check if the driver
blade has returned
completely.
--- 14 ---
Remedy
See item 1).
See item 1).
Replace the part.
Unusable because the tool
is not designed for such
usage.
Adjust for 5 to 8.5 kgf/cm
(4.9 --- 8.3 bar, 70 --- 120 psi).
Unusable because the tool
is not designed for such
usage.
Replace the part.
Replace the defective part.
Replace the defective part.
Use specified staples.
See <Magazine> in item 1).
Replace the part.
See <Output section: Piston,
driver blade, etc.> in item 1).
2