R
epair
<8> Assembling crank section
1) Assemble the following parts to crank shaft with
No.1R216 Block B for crank housing. See Fig.15.
* Ball bearing 689ZZ
* Flat washer 9
* Ball bearing 699ZZ
2) Assemble the above crank shaft to crank housing. See Fig.15.
3) Assemble the following parts to crank shaft
which has been assembled to crank housing. See Fig.15A.
* Thrust needle bearing 1224
( Apply MAKITA grease No.2 as illustrated in Fig.15A)
* Straight bevel gear 12
No.1R216: Block B for Crank Housing
Apply here
MAKITA grease No.2.
Thrust needle
bearing 1224
Straight bevel gear 12
Crank housing
Press with arbor press.
Crank shaft
Ball bearing 689ZZ
Ball bearing 699ZZ
Flat washer 9
Fig. 15
Fig. 15A
<9> Assembling impact bolt
1) Insert impact bolt into tool holder with screwdriver
as illustrated in Fig.16A. When inserting it, the
short head side of impact bolt has to be faced
to the bit side.
Fig. 16A
Impact bolt
Impact bolt
Fig. 16B
Fig. 16C
Impact bolt
O ring 11
O ring 11
Steel ball 5.6
Steel ball 5.6
Bit side
Crank housing
side
Bit side
2) Assemble O ring 11 into the groove of tool holder
with finger as illustrated in Fig.16B.
3) Assemble steel ball 5.6 to the hole of tool holder
with finger as illustrated in Fig.16C.
And then, apply grease to steel ball 5.6 and
the hole of tool holder for easy assembling
tool holder to the machine without losing
steel ball 5.6.
Crank housing
