TM 9-2320-260-34-1
f. Bushings and Bushing-Type Bearings.
(oversize inner diameter) burrs, nicks, and out-of-round condition.
(2) Check for dirt in lubrication holes or grooves. Holes and grooves must be clean and free from
damage.
(3) If bushing or bearing has been spun in bore, measure bore to determine extent of damage. Bore
of casting or forging may not retain new bushing/bearing when subjected to load.
g. Oil Seals. Oil seals are mandatory replacement items.
h. Core Hole Expansion Plugs. Inspect for leakage. Replace plugs when leakage is present.
i. Machine Tooled Parts. Inspect for cracks, breaks, elongated holes, wear, and chips.
j. Machined Surfaces. Inspect for cracks, evidence of wear, galled or pitted surfaces, burrs, nicks,
scratches, and evidence of overheating.
k. Mated Surfaces. Inspect for remains of old gasket or seal, secure fit, pitting, and evidence of leakage.
l. Rusted Surfaces. Inspect for pitting, holes, and severe damage.
m. Oil Bathed Internal Parts. Inspect for cracks, nicks, burrs, evidence of overheating, and wear.
n. Air-Actuated Internal Parts. Inspect for cracks, nicks, burrs, corrosion, evidence of overheating,
and wear.
o. External Exposed Parts. Inspect for breaks, cracks, rust damage, and wear.
p. Springs. Inspect for broken, collapsed, and twisted coils.
q. Shafts and Hubs.
(1) Check for cracks, especially at lubrication passages, keyways, and screw holes (threaded or
unthreaded). Cracks also occur at grooves where shafts or hubs have dimension changes.
(2) When shafts or hubs have bearing or bushing failures, make careful dimension measurements
and check for mounting surface damage from contaminated lubrication or overheating.
a. General Instructions. Repair of most parts and components is limited to general procedures
outlined in applicable maintenance instructions and detailed procedures "b" through "h."
CAUTION
Repaired items must be thoroughly cleaned to remove metal chips
and abrasives. Metal chips and abrasives can enter working parts
of vehicle and cause damage to equipment.
b. Castings.
(1) All cracked castings will be replaced.
(2) Only minor repairs to machined surfaces, flanges, and gasket mating surfaces are permitted.
Remove minor nicks, burrs, and/or scratches with:
