Disassembling The Final Gear Case - Yamaha YXR70FX Service Manual

REAR CONSTANT VELOCITY JOINTS, FINAL DRIVE
GEAR AND DRIVE SHAFT

DISASSEMBLING THE FINAL GEAR CASE

1. Remove:
• drive shaft coupling gear nut
M MMM M MMM M
a. Place a folded rag 1.
b. Secure the drive shaft coupling gear edge
in the vise.
c. Remove the drive shaft coupling gear nut.
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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.
NOTICE
_
• Never directly press the gear end with a
hydraulic press, this will result in damage
to the gear thread.
• Install a 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.
Bearing retainer wrench
Middle gear bearing retainer
d. Remove the bearing retainer.
NOTICE
The bearing
threads. To loosen the retainer, turn it
clockwise.
L LLL L LLL L
7 - 31
DRIV
M MMM M M MMM M M MMM M
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
90890-04128
YM-04128
retainer has
L LLL L L LLL L L LLL L
M MMM M MMM
L LLL L LLL
M MMM M MMM
L LLL L LLL
M MMM M MMM
left-handed
L LLL L LLL