TM-9-2520-254-34
TRANSMISSION, AUTOMATIC, ALLISON, MODEL TX100-1
TECHNICAL MAUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1971
TM-9-2520-254-34 - Page 52 of 126
whicoh defects which cannot be corrected will impair
the operation of the transmission.
(4) Inspect threaded openings for damaged
threads. Chase damaged threads with correct size
tap.
(5) Replace housings or other cast parts that
are cracked or broken.
b.
Roller or Ball Bearings.
Refer to TM 9-214
for proper cleaning and inspection procedures.
c. Needle-Type Roller Bearings.inspect
bearings
for free and smooth rotation, broken or missing
rollers. and tightness of fit in bore. If defects are
found, replace bearing, using proper replacer.
NOTE
Do not remove needle bearings unless
replacement is necessary, since removal
usually
results
in destruction of the
bearings.
d. Bushings. Bushing-Type Bearings, and Thrust
Washers.
(1) Inspect bushings and bushing-type
bearings for size, scoring and out-of-roundness,
burs, sharp edges, and evidence of seizing. Minor
scores, scratches, and sharp edges may be removed
with crocus cloth. Out-of-round, deeply scored, or
worn parts should be discarded.
NOTE
Do not remove bushings and bushing-type
bearings unless replacement is necessary,
as removal usually damages these parts.
(2) Remove bushings and bushing-type
bearings by using a puller or press when possible.
Bushings in blind holes may require removal by
sawing or the use of a narrow cape chisel.
CAUTION
If necessary to cut out a bushing, do not
damage the bore into Which it fits.
(3) Inspect thrust washers for wear, distortion,
scores and burs. Correct minor defects. Replace
parts that are worn, deformed, or scored.
e. Oil Seals. Performed Packings. and Gaskets.
(1) Inspect hook-type seal rings for wear,
distortion,
and broken hooks. Replace defective
seal rings.
(2) Inspect composition-type seal rings or
packings
for wear. brittleness. cracks, cuts,
deformation, and deterioration. Replace defective
seals.
(3) Inspect lip-type seals for cracks, wear,
cuts,
and brittleness. Inspect springs and seal
shells. Replace any seal found defective. Use a non-
hardening sealing compound on the outside
diameter of the seal to prevent leakage.
NOTE
Removal of a seal will usually damage
it;
inspect rigidly before reusing.
(4) Replace all flat-type gaskets.
f. Gears.
(1)
Inspect gears for burs, wear. broken teeth,
and pitting at tooth contact areas.
(2) Inspect bores of planetary pinions for wear
and pitting of bearing contact areas.
(3) Remove burs, using a soft honing stone.
Replace gears that are excessively worn or pitted.
g. Splined Parts.
(1) Inspect splined parts for twisted or broken
splines, burs, and excessive wear.
(2) Remove burs. using a soft honing stone.
Replace parts which have twisted or broken splines
or excessive wear.
h. Clutch Plates.
(1) Inspect nonmetallic plates for excessive
wear, cracks, breaks, and deep scoring. Replace
plates if such defects are found.
(2) Inspect bronze-faced steel plates for burs,
imbedded metal particles, severely pitted faces.
excessive wear. cracks, distortion, and damaged
spline teeth.
Remove burs, using a soft honing
stone. Replace plates which have other defects.
(3) Inspect steel plates for burs, scoring,
excessive wear, distortion, imbedded metal, galling,
cracks, breaks, and damaged spline teeth. Remove
burs and minor surface irregularities, using a soft
honing stone. Replace plates which have other
defects.
i. Threaded Parts.
(1) Inspect all threaded parts for burs and
stripped or damaged threads.
(2) Replace all parts which have stripped
threads or damage which cannot be repaired by
chasing the threads with a tap or die of the proper
size.
j. Snap Rings.
Inspect snap rings for nicks. burs.
distortion, and wear. Discard snap rings which are
defective.
k. Springs.
Inspect springs for wear, distortion,
breaks. evidence of overheating, and loss of tension
or compression. Discard defective springs. Refer to
table 6-2 for spring specifications.
1.
Shafts and Spindles.
(1) Inspect shafts and spindles for excessive
wear. bending. scores. cracks, burs, and obstructed
oil passages.
(2)
Remove burs and
minor
surface
irregularities with crocus cloth or a soft honing
stone. Remove obstructions by probing with soft
wire or with compressed air. Discard parts with
other Defects.
m. Ball-Type Valves.
(1) Inspect steel balls for rust. pitting. and
grooving. Inspect nylon balls for nicks, scratches,
grooving, and chipping, Discard balls which will
not seat properly.
5-2
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