Cub Cadet 6X4 Shop Handbook page 97

LUBRICATION
1. The universal joints in the driveshafts that con-
nect the transfer case to the front and rear differ-
entials are lubricated on assembly, and should
not need further lubrication in their normal ser-
vice life. See Figure 3.10.
Figure 3.10
2. The constant velocity (Rzeppa type) joints in
the axle shafts that drive the wheels are lubri-
cated on assembly, and should need no further
lubrication in their normal service life.
See Figure 3.11.
Figure 3.11
NOTE: Grease is contained in the constant
velocity joint boots. If a boot is damaged, the
grease will get contaminated. Once the grease
is contaminated, accelerated wear and joint fail-
ure will occur. Replace any damaged boot as
soon as possible. Clean and inspect the boots
regularly.
Chapter 3 - Drive System: Drive Shafts and Differentials
3.
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4.
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The rear differential contains roughly 32 fl.oz.
(950 ml.) of 80W-90 Low Foam Oil (Cub Cadet
P/N: 737-04040).
The rear differential gear lube should be
changed after the first 50hrs. of use, and there-
after at 500 hr. intervals.
Inspect the differential case vent at 100 hr. inter-
vals. A blocked vent will cause fluid loss.
The differential gear lube should be checked at
100 hr. intervals, unless fluid loss is noticed.
In the event of fluid loss, identify and repair the
leak as soon as possible to prevent catastrophic
failure of the differential, disabling the vehicle.
CAUTION: The small volume of fluid contained
in the differential necessitates close monitoring
and prompt action if leakage is detected.
NOTE: Draining the rear differential for fluid
change requires the differential to be removed
from the vehicle or drained with a suction device.
To check the fluid in the rear differential:
See Figure 3.12.
Level plug
Figure 3.12
4a. Park the vehicle on a firm level surface.
4b. Allow the engine and drive system to cool
to ambient temperature.
4c. Tilt the cargo box up.
4d. Clean the area surrounding the vent and
level plug.
4e. Remove the level plug using a 1/4" allen
wrench, and check for the presence of
fluid at a level even with the bottom of the
threads.