Makita HR4501C Technical Information page 17

R
epair
[3] -8. Motor Section (cont.)
DISASSEMBLY
4) Disconnect Carbon brush from Armature's commutator. (Figs. 53)
5) Regarding HR4510C and HR4511C, remove Active Dynamic Vibration Absorber before separating Motor housing
from Crank housing complete. (Fig. 54) Armature can be disassembled as illustrated in Fig. 55.
Fig. 53
Pin
Spiral spring for pressing Carbon
brush toward Commutator
Fig. 54 (HR4510C and HR4511C only)
Slotted screwdriver
Remove Crank Housing
Cover and Active Dynamic
Vibration Absorber
6) Armature can be disassembled as illustrated in Fig. 55.
Fig. 55
Armature
Crank housing
complete
Motor housing
Separate Motor housing from Crank
housing complete. as illustrated above.
So, Armature comes out together with
Crank housing complete.
ASSEMBLY
Do the reverse step of Disassembly.
Pin
Carbon brush
Hook Spiral spring's tail to Pin of
Brush holder unit in order to
disconnect Carbon brush from
Armature's commutator.
Crank housing cover
Active Dynamic
Vibration Absorber
Gear housing complete
Disassemble Gear housing complete
together with Armature from Crank
housing complete. (Fig. 56)
Carbon brush
M6x30 Hex socket
head bolt (4 pcs.)
Remove M6x30 Hex
socket head bolts.
Armature
1R045
Crank housing
complete
Disassemble Armature from
Gear housing complete with
1R045 and 1R346.
P 17/ 23
1R346
Armature