Final Gear Case and Oil
Replace the oil seal with a new one.
Drive the oil seal [A] using the bearing driver set [B].
Special Tool - Bearing Driver Set: 57001–1129 [C]
Reinstall the above removed parts.
Stake [A] the pinion gear nut with a punch.
When staking the nut, be careful not to apply shock
to the pinion gear and its bearing. Such a shock
could damage the pinion gear and/or bearing.
Pinion Gear Bearing Preload Adjustment
Check and adjust the bearing preload in the following
When any of the parts listed below are replaced with new
Tapered roller bearings
Pinion gear joint
When the pinion gear nut is loosened, even if the purpose
is not to replace the parts.
Assemble the pinion gear bearing housing, and tighten
the pinion gear nut to the specified torque. Oil seal instal-
lation is not required until the correct bearing preload is
To start with, choose a shim or shims so that the
bearings are just SNUG with NO play but also with
Any over-preload on the bearings could damage the
FINAL DRIVE 11-15