R
epair
P 3 / 7
Fig. 5
Fig. 6
Remove four M5x40 Pan head screws.
[3] -2. Disassembling Motor Section
1) Remove Lead cover from Gear housing cover (blade case cover) by removing Tapping screw CT4x12. (
Fig. 5
)
2) Remove Carbon brushes and four M5x40 Pan head screws.
Now Motor housing can be separated from Gear housing (blade case). (
Fig. 5
)
Note:
Be careful not to lose the compression spring of shaft lock when taking Armature out of Motor housing.
3) When removing Field from Motor housing, be sure to disconnect lead wires from Trigger witch beforehand.
The switch can be reached by removing two 4x18 Tapping screws and two M5x12 Pan head screws on Housing (R)
side to separate Handle (R) from Handle (L). (
Fig. 6
)
CAUTION:
At this time, treat the lead wires from Field carefully because they are still connected with Handle.
Fig. 7
Fig. 8
[3] -3. Disassembling/Assembling of Safety Cover, Bearing Box and Gear Housing (Blade Case)
1) Remove Retaining ring on Safety cover using Retaining ring pliers ST-2N (1R003).
At this time, hold the ring with gloved hand so that it cannot fly off.
2) By removing Safety cover, three parts can be disassembled in the following order;
Washer 42/ Spacer/ Thickness ring (See
Fig. 7
.) Remember this order for reassembling.
3) If Safety cover does not move smooth, remove metal dust from each part and apply machine oil.
4) Bearing box can be removed by removing two M5x12 (+) Countersunk head screws. (
Fig. 8
)
If it is hard to remove, turn Bearing box a little, and then lift it up using two Bearing extractors (1R263).
Note:
When reinstalling the countersunk head screws, apply an appropriate amount of
THREE BOND 1321B/1342 or LOKTITE 242 to them before tightening.
Note:
Place Thickness ring inside Spacer.
Remove Brushes.
Remove Lead cover by removing
Tapping screw CT4x12.
Pan head screw M5x12
Tapping screw 4x18
Trigger switch
Retaining ring 42
Safety cover
Thickness ring
Washer 42
Spacer
Bearing box
(+) Countersunk head screw M5x12
DISASSEMBLING
ASSEMBLING
