Makita BTP131 Technical Information page 8

R
epair
[3]-1 Impact Assembly, Anvil
ASSEMBLING
(1) Put 22 pcs of Steel ball 3 to Cup washer (Fig. 9).
And then, assemble the Cup washer and Cam B to Gear case assembly (Fig. 8
Fig. 9
Note: The Space equivalent to one steel ball remains
on Cup washer when 22 pcs. of Steel ball 3 are
correctly set on it.
(2) Assemble Cam A (Fig. 10).
Fig. 10
1. Assemble O ring 12.5 and Nylon washer 15 to Anvil.
Put Anvil on 1R351 while fitting its wings to
Shallow notch of 1R351.
And set Gear case assembly to the Anvil.
O ring 12.5
Nylon
washer 15
3. Set 1R390 on the Cam A and press it
with Arbor press until Cam A stops.
1R390
1R351
4. While expanding Retaining ring WR-15 with 1R291,
set the Retaining ring to tips of 1R003 with 1R212.
And mount the expanded Retaining ring WR-15
to the groove on Anvil.
1R351
Note: Cam A must be mounted until the groove for Retaining ring
Cam A
Steel ball 3
Cup washer
Retaining Ring WR-15
Space equivalent
to one Steel ball
2. Set Cam A to Cam B facing
Cam A
WR-15 on Anvil is reserved. Press 1R390 until the top surface
of Anvil comes to the same level of the top surface of 1R390.
Arbor press
1R390
Cam A
Cam B
1R291
).
-5
its cam gear side to Cam B.
Anvil
Cam B
1R351
Anvil
Groove for
Retaining ring WR-15
1R003 attached
with 1R212
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