Makita BTP131 Technical Information page 9

R
epair
[3]-1 Impact Assembly, Anvil
ASSEMBLING
(3) Assemble Change case, Change sleeve, Pin guides with Pin 1.2-3.5, Compression spring 2 and Hammer change ring
to Gear case assembly (Fig. 11, Fig. 12).
Fig. 11
1. Assemble Change case while locating its Tail
to the opposite side of Notch for Speed change
lever.
Notch for Speed change
lever
Elliptical hole
Change case
Fig. 12
1. Align the elliptical hole of Change case to that of
Gear case assembly by turning Change case.
The groove of Change sleeve is seen through the elliptical holes
of Change case and Gear case assembly.
Gear case
assembly
Change case
3. Mount 2 pcs. of Compression spring 2 to
Gear case assembly and assemble Hammer
change ring to Gear case assembly by fitting
its two holes to the Compression springs.
(4) Assemble Hammer change plates while pressing Hammer change ring with your fingers at its two points.
Refer to Fig. 6.
Elliptical hole
Tail of Change case
Groove of
Change sleeve
2. Insert Change sleeve into Gear case assembly while facing
the groove of Change sleeve to motor side.
Groove of
Change sleeve
Change sleeve
Note:
Make sure to assemble Change sleeve in the correct
direction (the groove is faced to motor side) so as to fit
Pin 1.2-3.5 to the groove of Change sleeve in the next step.
2. Apply grease to the elliptical holes of
Change case so that the Pin guide sticks
on the elliptical holes of Change case.
Mount Pin guide with Pin 1.2-3.5 to
the groove of Change sleeve.
Hammer change ring
Compression
spring 2
P 9/ 18
Change sleeve
Wrong
Groove of Change sleeve
Pin guide with Pin 1.2-3.5
Pin guide
with Pin 1.2-3.5