P 4/ 15
Repair
[3]DISASSEMBLY/ASSEMBLY
[3]-2. Armature
DISASSEMBLING
(1)Remove Armature section from Housing set as drawn in Fig. 3, and remove Brush holder from Armature in Fig. 4.
Fig. 3
1. Loosen four M4x22 Pan head screws and separate | 2. Loosen two M3x12 Pan head screws and |
Hammer case complete from Housing set. | separate Rear cover from Housing set. |
Hammer case complete |
|
| Rear cover |
M4x22
Pan head screw Hammer case (4 pcs.) complete
3.Loosen seven M3x20 Pan head screws and separate Housing set (R) from Housing set (L).
| M3x20 | |
Housing set (R) | Pan head screw | |
(7 pcs.) | ||
|
M3x12
Pan head screw
4.Take out Brush holder and Motor section (Armature and Yoke unit) together with Internal gear case from Housing set (L).
Motor section
Brush holder | Internal gear case |
| |
| Housing set (L) |
Fig. 4
1. Shift the tail of Torsion spring | Tail of |
| ||
from the top of Carbon brush to | Carbon | |||
the notch of Brush holder. | Torsion spring | |||
Brush | ||||
| ||||
Then, Carbon brush is free from |
|
| ||
the pressure of Torsion spring. |
|
| ||
Tail of | Torsion |
| Notch | |
Torsion Spring | Spring |
|
| |
Carbon |
|
|
| |
Brush |
|
|
| |
| Notch |
|
| |
2. Take out Carbon brushes.
Then, disassemble Carbon brush Armature and Yoke unit
from Brush holder.
Carbon |
Brush |
Armature |
Yoke unit
Brush holder