Yamaha YXR660FAS Service Manual download pdf (Page 220)

4 - 90

ENG

MIDDLE GEAR

4. Remove:

• bearing housing assembly 1

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a. Clean the outside of the bearing housing

assembly.

b. Place the bearing housing assembly onto a

hydraulic press.

CAUTION:

• Never directly press the middle driven

pinion gear end with a hydraulic press,

this will result in damage to the middle

driven pinion gear thread.

• Install the suitable socket

2

on the mid-

dle driven pinion gear end to protect the

thread from damage.

c. Press the middle driven pinion gear end

and remove the bearing housing.

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5. Remove:

• bearing retainer

• bearing

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a. Place a rag 1 in the vise.

b. Secure the bearing housing edge in the

vise.

c. Attach the bearing retainer wrench 2.

CAUTION:

The middle driven shaft bearing retainer

has left-handed threads. To loosen the

retainer, turn it clockwise.

d. Remove the bearing retainer and bearing.

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Bearing retainer wrench

P/N. YM-04128, 90890-04128

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