P 7/ 17
Repair
[3]DISASSEMBLY/ASSEMBLY
[3]-4 Piston, Striker, Cylinder
DISASSEMBLING
(1)Disassemble Chuck section as illustrated in Figs 2, 3 and 4.
(2)Remove Housing cover as illustrated in Fig. 9. In case of HM0871C, disassemble Active dynamic vibration absorber as illustrated Figs. 9 and 10.
(3)Striker and Piston can be disassembled as illustrated in Figs. 15 and 16.
Note: It is not necessay to remove Tool holder from Barrel.
Fig. 15
Remove Barrel from Crank housing
Note: Do not lose Flat washer 34 between
Crank housing and Barrel.
Flat washer 34
Barrel
M6x25 Hex socket 
head bolt (4pcs.) 
Separate Striker from Barrel, and then remove O ring 24 from Striker.
Barrel
Striker
O ring 24
Striker
Fig. 16
M4x18 Pan
head screw (4pcs.)
Air pipe
Remove Crank cap, Seal ring, Air pipe and Flat washer 34 from Crank housing.
Crank cap
Seal ring
Turning Crank shaft, set Piston to the closest position to Barrel side.
And remove Piston together with Connecting rod.
Connecting rod
Crank shaft
Piston
Crank housing 
Piston
Barrel side 
Crank shaft
O rings on Piston can be replaced .
O ring 24 | Pin 8 |
| Piston |
O ring 26 |
|
Connecting rod