Makita HM1307CB User Manual download pdf (Page 13)

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Repair

[3] DISASSEMBLY/ASSEMBLY

[3]-5. Crank section, Gears (HM1317C, HM1317CB with AVT mechanism)

(8B) Crank shaft and Helical gear 47 can be disassembled as illustrated in Fig. 25B.

Fig. 24B

Bearing box

complete

O ring 87

(7B) O rings on Bearing box complete, Crank cap cover, and Filter can be replaced. See Fig. 24B.

O ring 74

O ring 17

Crank cap section can be

disassembled.

Crank cap

cover

Filter

DISASSEMBLING

Fig. 25B

1R217

Helical gear 47

Crank housing

complete

Crank shaft

Ball bearing

6204LLB

4. Putting Crank housing complete on 1R217, press Crank shaft with Arbor

press. Crank shaft can be removed from Helical gear 47.

Ball bearing 6204LLB still remains in Crank housing complete.

1R246

1R252

(5) Inserting 1R252 from the Crank

shaft side, press the 1R252 with

Arbor press.

Ball bearing 6204LLB can be

disassembled from Crank housing

complete.

2. Set Crank shaft and Connecting

rod of Piston to the position.

Connecting rod of Piston

Crank shaft

3. Piston can be pulled off from Connecting rod.

O rings on Piston can be replaced in this step.

See Fig. 19.

Piston

Connecting rod

(6B) After removing Bearing box complete as illustrated in Fig. 20B, Crank shaft comes into your sight.

Remove Piston as illustrated in Fig. 23B.

Fig. 23B

Ball bearing

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19

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Makita HM1307CB User Manual Page 13

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