Hitachi NT 65GB Technical Data And Service Manual page 22

<Continued>
Problem
No combustion <Electric section>
occurs.
Continued
• No spark occurs. (Check
for sparking according to
9-3, "Checking for
Sparking and Corrective
Action.")
No nail is driven <Combustion section>
though nails are • The Piston [27] does not
set properly and return completely.
combustion is
normal.
Output is low. • Discharge and cooling
are insufficient.
• The outside air
temperature and altitude
exceed specifications.
The nailer is
• Discharge and cooling
overheated.
are insufficient.
• The operating speed is
too fast.
Abnormal noise • Discharge and cooling
is heard during are insufficient.
fan rotation.
*
A rubbing noise may
be heard in some
rare cases, but there
is no problem in
operation.
Possible cause Inspection method
• The Battery [58] is not
set properly.
• The Battery [58] is faulty.
• The battery indicator light
goes on in red.
• Connection failure
between Internal Wire (A)
[60A] and the Controller
[95].
• The spark plug cable is
disconnected from Spark
Plug (A) [5].
• Faulty insulation of the
spark plug cable wire
• Break in Internal Wire (A)
[60A].
• The spark switch is faulty.
• Spark Plug (A) [5] is
stained.
• The wire near the Trigger
[71] is pinched.
• The Pushing Lever Arm
[77] is deformed.
• Check the position of the
Piston [27].
• Piston Ring (B) [17] is
worn.
• The Reed Valve [50] is
deformed.
• The cylinder is stained
inside.
• Piston Ring (A) [26] is
damaged.
• The Filter Mesh [2] is
clogged.
• Check the outside air
temperature and altitude.
• The Filter Mesh [2] is
clogged.
• Check that the Motor
Ass'y [25B], Fan [11] and
Nut M3 [8] are mounted
properly.
-19-
Corrective action
• Set the Battery [58]
properly.
• Replace the Battery [58].
• Charge the Battery [58].
• Connect properly (Fig. 15).
• Connect properly (Fig. 16).
• Replace the Controller
[95].
• Replace Internal Wire (A)
[60A].
• Replace Internal Wire (A)
[60A].
• Clean Spark Plug (A) [5]
(Fig. 17).
• Position the wire correctly
(Fig. 15).
• Replace the Pushing
Lever Arm [77].
• Return the Piston [27] to
the uppermost position
with a flat-blade
screwdriver.
• Hold down Pushing Lever
(A) [82] securely until
nailing operation is
completed.
• Replace Piston Ring (B)
[17].
• Replace the Reed Valve
[50].
• Clean inside the cylinder.
• Replace Piston Ring (A)
[26].
• Clean the Filter Mesh [2]
(Fig. 12).
• Outside air temperature
range: 0°C to 40°C
• Altitude: Less than 1,500 m
(5,000 feet)
• Clean the Filter Mesh [2]
(Fig. 12).
• Do not use the nailer at
high speed.
Speed: 1 nail/sec.
Continuous operation:
1,000 nails/h
• Mount each part properly.