Makita HR4013C Technical Information page 16

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-6. Handle section
DISASSEMBLING
Loosen 4x18 Tapping screw and then
lever up Handle cover with a slotted
screwdriver. (Fig. 46)
Main switch can be replaced. (Fig. 47)
[3]-7. Fastening Torque
Fasten the bolts to the fastening torque listed in Fig. 48.
Fig. 48
Item No. Description
M6x30 Hex socket head bolt
12
M5x25 Tapping screw
75
M6 Hex nut
114
[4] Maintenance
When replacing Carbon brushes, it is recommended to do replace the following parts (Fig. 49) and apply appropriate
amount of lubricants (Figs. 1 to 3) at the same time for longer service life of the machine.
Fig. 49
1 Tool holder cap
22 O ring 20
23 Fluoride ring 25
24 O ring 20
23 Fluoride ring 25
31 O ring 22 on Striker
48 O ring 22 on Piston
Fig. 46
Slotted screwdriver
12 M6x30 Hex socket
head bolt (4 pcs.)
Fastening torque
Q'ty
7.8 - 12.0 N∙m
4
1 3.0 - 3.5 N∙m
1 1.8 - 3.7 N∙m
1 22 23
on Impact bolt
Handle cover
4x18
Tapping screw
Barrel complete
Crank housing complete
Gear housing complete
Motor housing
Fan 76 (Armature Fan)
M6 Hex nut
114
(Ring 17)
24 25
(Impact bolt) (Rubber ring 18)
P 16/ 19
Fig. 47
Main switch
75 M2x25 Tapping
screw (4 pcs.)
(Slide sleeve)
31 48
(Striker) (Piston)