Checking The Pinion Gears - Yamaha Grizzly550 User Manual

• Install a suitable socket "2" on the middle
driven pinion gear end to protect the thread
from damage.
c. Press the middle driven pinion gear end and
remove the bearing housing.
L LLL L LLL L L LLL L L LLL L
4. Remove:
• Middle driven pinion gear bearing retainer
• Bearing
M MMM M MMM M M MMM M M MMM M
a. Wrap the bearing housing in a folded rag "1",
and then secure the bearing housing edge in
a vise.
b. Attach the bearing retainer wrench "2".
Bearing retainer wrench
90890-04128
Middle gear bearing retainer
YM-04128
ECA28P1037
NOTICE
The middle driven pinion gear bearing retain-
er has left-handed threads. To loosen the re-
tainer, turn it clockwise.
1
2
c. Remove the bearing retainer and bearing.
L LLL L LLL L L LLL L L LLL L
5. Remove:
• Oil seal "1"
• Middle driven shaft bearing retainer "2"
TIP
Attach the ring nut wrench "3".
L LLL L L LLL L LLL
M MMM M M MMM M MMM
L LLL L L LLL L LLL
5-83
Ring nut wrench
90890-01430
YM-38404
ECA28P1038
NOTICE
The middle driven shaft bearing retainer has
left-handed threads. To loosen the retainer
turn it clockwise.
3
6. Remove:
• Middle driven shaft "1"
(with bearing)
EAS28P1064

CHECKING THE PINION GEARS

1. Check:
• Drive pinion gear teeth
• Driven pinion gear teeth
Pitting/galling/wear → Replace.
2. Check:
• O-ring
Damage → Replace.
MIDDLE GEAR
2
1
1