14 - 7
14 Transmission Tear-Down
Disassembly
DISASSEMBLY
Preparation
Drain the transaxle oil, thoroughly clean the transmis-
sion, and put it on a stand. We suggest partially tapping
some of the unused case holes and using 1/2” bolts to
support the front of the transmission. Use 5/16” rod to
support the rear.
Note that a majority of the hardware is metric, but there
are some SAE sizes as well. Be sure to handle parts
with care so as not to damage any components, espe-
cially when working in the center section area (pump and
motor group).
Disassembly
1. Loosen and remove the plastic plug (A, Figure 1) at
the lower front of the unit. Remove the filter (B).
2. Remove the 2 auxiliary hydraulic fitting adapters (C,
Figure 1).
3. See Figure 2. Remove the case bolts, noting as you
go the varying length of the bolts (there are two long
bolts, one medium length bolt, and 18 short bolts.
There are two oil drain plugs. They can be distin-
guished from the case bolts in that they have a seal-
ing washer under them and require a 14mm socket.
WARNING
Before beginning any service work, turn the PTO
off, set the parking brake, turn the ignition switch
off, remove the key, disconnect the spark plug
wire, and disconnect the negative battery cable.
Figure 1. Internal Transmission Filter Service
A. Plastic Plug C. Fittings
B. Internal Filter
A
B
Figure 2. Case Bolts
A. Long Bolts C. Drain Plugs
B. Medium Bolt
Figure 3. Remove Lower Case
C
4. Separate the upper and lower case halves. Pry only
at the pry-points. Remove any sealant left on the
mating surfaces.
5. Remove the lower case. Note a few items here.
• The magnet in the lower case will attract and hold
metal filings from the gear train.
• The small circular filter that separates the two case
halves from each other.
• Note that if the unit is equipped with the differential
lock, the mechanism is in the lower case.
A
B
C
Filter Disk (Behind
Charge Pump)
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