Yamaha YXR660FAS Service Manual download pdf (Page 276)

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DRIV

REAR CONSTANT VELOCITY JOINTS, FINAL DRIVE

GEAR AND DRIVE SHAFT

2. Remove:

• final drive pinion gear bearing housing

assembly 1

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a. Clean the outside surface of the final drive

pinion gear.

b. Place the final drive pinion gear in a hydrau-

lic press.

CAUTION:

_

• Never directly press the gear end with a

hydraulic press, this will result in damage

to the gear thread.

• Install the suitable socket

2

on the gear

end to protect the thread from damage.

c. Press the gear end and remove the bearing

housing assembly.

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3. Remove:

• bearing retainer

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a. Place a folded rag 1.

b. Secure the final drive pinion gear bearing

housing edge in the vise.

c. Attach the bearing retainer wrench 2.

d. Remove the bearing retainer.

CAUTION:

The bearing retainer has left-handed

threads. To loosen the retainer, turn it

clockwise.

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Bearing retainer wrench

P/N. YM-04128, 90890-04128

REMOVING THE FINAL DRIVE ROLLER

BEARINGS

1. Remove:

• roller bearing (ring gear) 1

Use a suitable press tool 2 and an appro-

priate support for the main housing.

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