Makita HM0870C, HM0871C dimensions Disassembly/Assembly, Chuck section

Repair	P 3/ 17
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Chuck section
DISASSEMBLING
(1) Remove Tool holder cap as illustrated in Fig. 2.
Fig. 2
Remove Handle section by loosening four 5x25 Stand the machine upright.	While pressing down Chuck cover,
Tapping screws, and then disconnect Lead unit	remove Tool holder cap.
from Controller.	And then, remove Chuck cover.
Note: It is not necessary to disconnect Switch and
Power supply cord.	Tool holder cap
Controller
Lead unit
	Chuck cover
Handle section
5x25 Tapping screw (4pcs.)

(2)Disassemble Chuck section as illustrated in Figs. 3 and 4.

Fig. 3

1. Pulling down Chuck cover, install 1R363			Flat washer 28
in the same way of SDS-MAX bit installation.			Rubber ring 28
	2. Press down Flat washer 28 by		Chuck ring
	turning Socket wrench to make		Ring spring 25
	Ring spring 25 free from the
Socket wrench	pressure by Flat washer 28.
1R363	3. Remove Ring spring 25 using
	1R003 with 1R212.
	Ring spring 25
Spring guide	1R212
Flat washer 28	1R003	4. Remove Flat washer 28, Rubber ring 28 and Chuck ring.
Fig. 4

While pressing down Spring	Remove Spring guide,	Remove four Steel balls 4.8
guide, push out Tool retainers	Compression spring 52	with Slotted screwdriver
by screwdriver inserted from	and Plate.	magnetized by 1R288.
Tool holder.
	Spring	Screwdriver magnetized
	guide	by 1R288
Tool retainer	Compression		Steel ball 4.8
	spring 52
			(4pcs.)
Spring

guide Plate

Remove Change ring together with Lock ring. And separate Lock ring from Change ring.

Lock ring

Change ring