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Ventrac 4100 Series - Rear Transaxle; Hydrostatic Oil Filter

Ventrac 4100 Series
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Figure 38
D-4
SERVICE & MAINTENANCE
REAR TRANSAXLE
The rear transaxle oil is captive and remains
constant unless there is a leak. For convenience,
the same oil is recommended that is used in the
front transaxle. Oil can be added through the plug
from the rear (Figure 38). It is located above the
rear hitch and slightly to the left. To check the oil
level on a level surface, remove the oil fill plug in
the transaxle (Figure 38), and check to see if oil
level is even with the bottom of oil fill hole. If no
rear transaxle leaks are observed, this level
should be checked every 250 hours or annually.
Oil fill plug
Figure 40
Figure 41
HYDROSTATIC OIL FILTERS
Two filters protect the hydrostatic transmission
system.
1) A 25-micron (suction) non-bypass filter located
above the operator’s left foot on the front frame of
the tractor (Figure 40). Part # 21.0001
2) A 10-micron (pressure) non-bypass filter
located behind the right foot of the operator on the
rear frame of the tractor (Figure 41). Part #
21.0078
These filters do not need to be changed unless
the system is contaminated or the operator
experiences noticeable loss of steering even
when the hydrostatic oil level is properly
maintained. If this symptom occurs, change both
filters.
Replacement of oil filters may create some oil
spill. A shallow pan or towel can be helpful in
containing the oil spill.
Pressure
Filter
Suction Filter

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