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9-3. Checking for Sparking and Corrective Action
The main causes of no combustion are the following five items.
1. The fuel cell is abnormal. (Replace the fuel cell with new one.)
2. The battery is abnormal. (Check the battery.)
3. The Chamber
[24]
is improperly sealed. (Check the O-rings
[15]
and
[36]
, and the moving amount of the
Pushing Lever
[64]
.)
4. The Piston
[39]
is not in the uppermost position. (Check the position of the Piston
[39]
.)
5. No sparking occurs.
It is most difficult to check the cause of the above "5. No sparking occurs". How to determine the cause of no
sparking is explained below. (Disassemble the nailer according to "10. DISASSEMBLY AND REASSEMBLY".)
Remove the fuel cell then set nails and the battery.
(1) Remove the Hex. Socket Hd. Bolt M5 x 14
[1]
and open the Top Cover
[3]
.
(2) Remove the Hex. Socket Hd. Bolt M5 x 20
[13]
and remove the Cylinder Head
[14]
from the Housing
[71]
.
(3) Put the Fan
[20]
on the Cylinder Head
[14]
and check that the Fan
[20]
does not contact the surrounding
components.
(4) Push up the Pushing Lever
[64]
to rotate the Motor
[6]
.
(5) Depress the Trigger
[98]
.
If sparking does not occur from the spark plug (Fig. 19) as a result of the above operation, perform checking
and take corrective actions as follows.
(Disassemble and reassemble the nailer according to "10. DISASSEMBLY AND REASSEMBLY".)
Checking and corrective action
1. Check for stain of Spark Plug (A)
[11]
.
Clean Spark Plug (A)
[11]
.
2. Faulty insulation of the spark plug cable (sparking occurs from the spark plug cable).
Disconnect the spark plug cable from Spark Plug (A)
[11]
and check the spark plug cable. If the spark plug
cable is abnormal (discharged from the cable due to scratches), replace the Controller
[101]
.
3. Faulty insulation of Spark Plug (A)
[11]
.
Replace Spark Plug (A)
[11]
.
4. Check whether the trigger switch wire in the Trigger
[98]
is pinched or not (Fig. 16).
5. Switch Lever (B)
[114]
is faulty.
Replace Switch Lever (B)
[114]
.
6. The Trigger
[98]
is faulty.
Replace the Trigger
[98]
.
7. No sparking occurs even if the switch in the Trigger
[98]
is directly turned on.
Replace Internal Wire (A)
[86]
.
Spark Plug (A)
[11]
Cylinder Head
[14]
Check whether sparking
occurs at this area or not.
Fig. 19
Spark plug cable