P 8 / 20
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -3. Disassembling/Assembling Crank Section of AVT
DISASSEMBLING
Fig. 19
Fig. 22
StopperCrank box
Balancer complete
Connecting rodCrank complete
Crank box
Fig. 23
Crank housing
Connecting rod
(for Piston reciprocating)
Fig. 20 Fig. 21
Hex wrench
Barrel
steel pipe
Retaining ring R-80
Flat washer 65
Crank box
1) Stopper and Crank box will be visible by removing Motor housing cover set and the assembly of Rear cover and
Handle (switch side).
2) Grasp the projection of Stopper with pliers. While turning Stopper, pull off from Crank box. (Fig. 19)
3) Unscrew four M12x55 hex socket head bolts with hex wrench. (Fig. 20)
Note: Use an appropriate steel pipe to extend the grip of hex wrench for easy removal of the bolts securely fastened
with adhesive.
4) Move Barrel till the connection portion of Balancer comp. and Connecting rod (for balancer reciprocating) is visible.
Now Connecting rod can be removed from Balancer complete and Crank complete as illustrated in Fig. 21.
5) Remove Crank box from Crank housing by unscrewing four M6x20 Hex socket head bolts. (Fig. 22)
6. Remove Retaining ring R-80 and Flat washer 65 from Crank box. (Fig. 23)
Note: Remove Retaining R-80
using Retaining Ring R Pliers
(No.R005).
7) Remove Crank by pressing with arbor press.( Fig. 24)
The other Flat washer 65 and Needle bearing 7025 still remain in Crank box in this step.
8) Needle bearing 7025 and the other Flat washer 65 can be removed from Crank box by putting the Crank complete
removed in the previous step on Flat washer 65, then pressing it with arbor press. (Fig. 25)
Flat washer 65
Needle bearing
7025
Crank complete
Flat washer 65
(the other one)
Needle bearing
7025
Crank box
Fig. 24 Fig. 25
Put the removed Crank complete
on Flat washer 65.
Crank box
Hex socket head bolt M6x20 (4pcs)
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