Makita HR4013C Technical Information page 4

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Chuck
DISASSEMBLING
Chuck section can be disassembled as drawn in Fig. 4.
Fig. 4
1. Set the machine to 1R312 or the like,
and remove Tool holder cap by prying
off with a slotted screwdriver.
3. Remove Ring 28, Chuck cover, Rubber ring 30,
Chuck ring and Release cover from Tool holder.
Chuck ring
Release cover
ASSEMBLING
Assemble Chuck section by reversing the disassembly procedure.
Refer to Fig. 4.
Note: It is difficult to set Tool holder cap in place by hand.
Put Tool holder cap on floor, and push Tool holder of
the machine to the cap while making use of the machine
weight.
Tool holder cap
1R312
Ring 28
Chuck cover
Rubber ring 30
Tool
retainer
Spring guide
2. Insert the dummy shank of 1R363 into Tool holder,
and lock it same way as you do for a real bit.
Press down Ring 28 under Ring spring 25 by turning
M8 Nut of 1R363 clockwise using a socket wrench 13,
and remove Ring spring 25 using 1R003 and 1R212.
Socket wrench 13
1R363
Ring 28
4. Remove a pair of Tool retainer by pressing down
Spring guide. Then separate Spring guides and
Compression spring 46 from Tool holder.
Compression spring 46
Fig. 5
P 4/ 19
Dummy shank of
SDS-MAX bit
Ring spring 25
1R212
1R003
Spring guide
Tool holder cap