BUSHINGS AND BUSHING- TYPE BEARINGS.

TM 9-2520-270-34

e, BUSHINGS AND BUSHING- TYPE BEARINGS.

(l) Check all bushings and bushing-type bearings for secure fit in casting. Check for color

changes which could indicate overheating.

(2) Check for dirt in oil holes and in bushing-type bearings. Oil holes and grooves must be clean

and not damaged.

f. THRUST WASHERS AND SH/MS. Inspect thrust washers and shims for wear, distortion,

scores, nicks, and burrs.

g, GEARS. Inspect gears for burrs, wear, cracked or broken teeth, and pitting at tooth contact

areas. Inspect the mating gear of any defective gear.

h. OIL SEALS, PREFORMED PACKINGS, AND REUSEABLE GASKETS.

(1) Inspect hook-type metallic seal rings for wear, distortion, cracks, and broken hooks. Ensure

that edges of hook ring are square.

(2) Inspect gaskets, composition-type seals, rings, and packings for wear, brittleness, cracks,

cuts, deformation, and deterioration.

(3) Inspect lip seals for cracks, wear, cuts, and brittleness. Inspect springs and seal shells for

deformation and cracks.

(4) Inspect feather edge of oil seals for tears, fraying, hardening, and cracking.

(5) Replace metal-covered oil seals when inspection indicates damage or oil leakage.

SPLINED PARTS. Inspect splined parts for burrs, wear, and twisted, cracked or broken splines.

j, CLUTCH AND BRAKE PLATES.

(1) Inspect nonmetallic plates for uneven or excessive wear, cracks, breaks, deep scoring,

and warpage.

(2) Inspect steel plates for burrs, scoring, uneven or excessive wear, distortion, discoloration

( e v i d e n c e of heating), embedded metal particles, severly pitted faces, galling, cracks,

breaks, damaged spline teeth, and warpage,

k. INSERTS.

(1) Inspect inserts for cracks and stripped or damaged threads.

(2) Check inserts for loose fit.

1. SNAP RINGS. Inspect snap rings for nicks, burrs, distortion, loss of tension, and wear.

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