Makita HR4501C Technical Information page 6

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Tool Holder Section
DISASSEMBLY
1) Disassemble Chuck section. (Figs. 4 - 11)
2) Disassemble the Tool holder section in the order of Figs. 13 -17.
Fig. 13
Unscrew M4x25 Hex socket head bolt
and remove Barrel cover complete.
M4x25 Hex socket head bolt
Barrel cover complete
Barrel complete
Fig. 16
Remove Impact bolt from
Tool holder.
Tool holder
Impact bolt
Fig. 14
Disassemble Barrel complete
together with Tool holder by
unscrewing M6x30 Hex
socket head bolts (4 pcs.).
M6x30 Hex socket
head bolt (4 pcs.)
Tool holder
Barrel complete
All the Rings on Impact bolt have to
be replaced if O ring 23 (orange)
can be seen through the worn Fluoride
ring 28.
X ring 21
Fluoride ring 28
(the worn one)
O ring 23
Impact bolt
Fig. 15
Separate Tool holder from Barrel
complete. Then remove Flat washer
36 (2pcs.) and Urethane ring 36
from Tool holder.
Barrel complete
Urethane
ring 36
Flat washer 36
Tool holder
Fig. 17
Remove the following parts from
Crank housing.
Ring 19
Rubber ring 20
Shoulder sleeve 19
Slide sleeve
Ring 38
These parts may come out with Barrel
complete in the step of Fig. 14.
In this Case, they are disassembled
from Tool holder in the step of Fig. 16.
P 6/ 23
Flat washer 36