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TM 10-3930-671-24
7.5. Transaxle Overhaul
General Procedures
Disassembly .................................................................................. F-341
Cleaning ........................................................................................ F-341
Inspection ...................................................................................... F-342
Repair and Replacement ............................................................... F-342
Reassembly ................................................................................... F-344
Disassembly
It is assumed in the detailed disassembly instructions that the transmission fluid has been drained from transaxle, the
necessary controls, linkages and hydraulic lines are disconnected and the transaxle if removed from truck chassis.
Follow closely each procedure in the detailed instructions, making use of the text, illustrations and photographs
provided.
1.
Cleanliness Provide a clean place to work. It is
important that no dirt or foreign material enters
the unit during repairs. Dirt is an abrasive and
can damage bearings. It is always good practice
to clean the outside of the unit before starting the
planned disassembly.
2.
Assemblies When disassembling the various
assemblies, such as the clutches, idler shaft and
wheel ends, lay all parts on a clean bench in the
same sequence as removed. This procedure
will
simplify
reassembly
and
reduce
the
possibility of losing parts.
3.
Using Tools To Move Parts Always apply force
to shafts, bearings, housings, etc., with restraint.
Movement of some parts is restricted. Never
apply force to the part being driven after it stops
solidly. The use of soft hammers, bars and
mauls for all disassembly work is recommended.
4.
Bearings Carefully wash and relubricate all
reusable bearings as removed and protectively
wrap until ready for use. Remove bearings
planned to be reused with pullers designed for
this purpose.
5.
Snap Rings Remove snap rings with pliers
designed for this purpose. Snap rings removed
in this manner can be reused, if they are not
sprung or loose in the groove.
Cleaning
Gasoline
is
not
an
acceptable
cleaning
solvent
because
of
its
extreme combustibility. It is unsafe
in
the
workshop
environment
because it can ignite and cause injury
or death to personnel.
1.
Proper cleaning requires complete disassembly.
2.
Wash steel parts with machined surfaces in a
commercial solvent.
3.
Clean the inside and outside of bearing caps,
housings, etc. Cast parts which do not have
machined or polished surfaces may be cleaned
in hot solution.
4.
Wash castings or other rough parts in solvent or
clean in hot solution tanks using mild alkali
solutions,
heating
parts
thoroughly
before
rinsing.
5.
Rinse all parts thoroughly. Dry immediately with
clean rags. Lightly oil parts and wrap in
corrosion
resistant
paper
if
not
reused
immediately. Store parts in a clean, dry place.
6.
Clean bearings thoroughly in approved solvent
until completely cleaned. Dry bearings using
moisture-free compressed air. Be careful to
direct air stream across bearing to avoid
spinning.
7.
Do not spin bearings when drying them.
Bearings may be rotated slowly by hand to
facilitate drying.
F-341
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