Makita GA7050R Instructions Manual page 7

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-3. Shaft lock mechanism
DISASSEMBLING
(1) Remove Gear housing complete from Motor housing.
Remove Bearing box from Gear housing complete as illustrated in Fig. 2.
(2) Remove Armature from Gear housing complete as illustrated in Fig. 3.
(3) Shaft lock mechanism can be disassembled as illustrated in Figs. 15 and 16.
Fig. 15
Put Gear housing complete on
Turn table of arbor press as
illustrated right.
Insert 1R268 from the small hole
on Pin cap, and tap 1R268 with
Plastic hammer to push out
Shoulder pin 11 through the
U-groove of the turn table.
U-groove of turn table
of arbor press
ASSEMBLING
(1) Be sure to use a new Pin cap for replacement and to remove all the plastic dust on Shoulder pin 11. (Fig. 17)
(2) Assemble the parts for Shaft lock mechanism as illustrated in Fig. 18 .
Fig. 17
Make sure that O ring 7 is
mounted to Shoulder pin 11
illustrated below.
Plastic dust
Shoulder pin 11
O ring 7
1R268
Pin cap
Shoulder pin 11
Fig. 18
Insert Shoulder pin 11
through the hole of Gear
housing complete.
Shoulder pin 11
Fig. 16
Note: Do not reuse Pin cap.
Removal of Shoulder pin 11 damages
the inside surface of Pin cap, producing
plastic dust.
Pin cap
Compression
spring 12
Release 1R268 from Pin cap carefully so that
Pin cap would not be slung by Compression
spring 12.
Assemble Compression spring 12
and Pin cap by pressing them to
Shoulder pin 11.
P 7/ 8
Pin cap
Compression
spring 12