Cub Cadet 6X4 Shop Handbook page 98

Chapter 3 - Drive System: Drive Shafts and Differentials
4f. If the fluid level is low, gear lube may be
added through the level plug, or through
the vent at the top of the differential hous-
ing. Use a 1/2" wrench to remove the
vent. See Figure 3.13.
Rear differential vent may be used as
Figure 3.13
5. The front differential contains roughly 5 fl.oz.
(148 ml.) of Hydraulic Transmission Fluid (Cub
Cadet P/N: 737-3025 "red label").
• In normal service, the front differential gear lube
should not need to be changed or replenished
unless leakage is noticed or the fluid has been
contaminated by submersion or similar mishap.
• 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.
• If fluid loss is noticed, identify and repair the leak
as soon as possible to prevent catastrophic fail-
ure.
NOTE: If the front differential is over-filled it may
"lock-up". If this occurs, drain the fluid down to
the correct level. The differential should suffer no
loss of function or longevity.
6. To check the fluid in the front differential:
6a. Park the vehicle on a firm level surface.
6b. Allow the engine and drive system to cool
to ambient temperature.
6c. Tilt the hood forward to open it.
a fill point
7.
94
6d. Clean the area surrounding the fill plug
and level plug. See Figure 3.14.
Front of vehicle
Front differential
level plug
Figure 3.14
6e. Remove the level plug using a 5/16" allen
wrench, and check for the presence of
fluid at a level even with the bottom of the
threads.
6f. Clean the level plug and inspect the o-ring
seal before installation. Replace the o-ring
if it is suspect.
6g. Tighten the level plug to a torque of 10 ft-
lbs (13.5 N-m).
If the fluid level is low, hydraulic transmission
fluid may be added through the level plug using
a pump, or through the vent at the top of the dif-
ferential housing. Use a 7/16" wrench to discon-
nect the vent. See Figure 3.15.
Front differential
vent may be
used as a
fill point
Figure 3.15