P 2
0
/ 2
3
[3] DISASSEMBLY/ASSEMBLY
[3] -11. Fastening Torque
R
epair
131 M8-12 Hex nut
15 M6x30 Hex socket
head bolt (4 pcs.)
64 M6x30 Hex socket
head bolt (4 pcs.)
78 M4x12 Pan
head screw
Fan 90
(Armature Fan)
Gear housing
complete
Crank housing
complete
Barrel complete
Crank cap
Crank lever
Retainer plate
Motor housing
Fasten the bolts to the fastening torque listed in
Fig. 63
.
Note
: Apply adhesive (ThreeBond 1342 or Loctite 242) to the thread of M4x12 Pan head screw (Item No. 78).
Item No.
Fastening torque
Q'ty
Description
15
4
7.8 - 11.7 N.m
M6x30 Hex socket head bolt
M6x30 Hex socket head bolt
M4x12 Pan head screw
64
78
4
4.9 - 7.8 N.m
131
1
1
1.8 - 3.5 N.m
1.5 - 2.3 N.m
M8-12 Hex nut
Fig. 64
[4] Maintenance
When replacing carbon brush, it is recommended to do replace the following parts (
Fig. 64
) and apply appropriate amount
of lubricants (
Figs. 1 to 3
) at the same time for longer service life of the machine.
1. Tool holder cap
22. X Ring 21
23. Fluoride ring 28 on Impact bolt
24. O Ring 23
39. O Ring 27 on Striker
49. O Ring 27 on Piston
1
22 23 24
39
49
(Impact bolt)
(Striker)
(Piston)
Fig. 63