TM-9-2320-273-34
TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1980
TM-9-2320-273-34 - Page 45 of 801
TM 9-2320-273-34
e. Bushing and Bushing-Type Bearings.
(1)
Check all bushing and bushing-type bearings for secure fit in their respective casting or
mating part and for evidence of heating which may be indicated by discoloration of bushing or bearing
surface.
(2)
Inspect bushings and bushing-type bearings for wear, burrs, nicks and out-of-round
condition.
(3)
Check for dirt in lubrication holes or grooves of bushings or bushing-type bearings. Holes
and grooves must be clean and free from damage to insure proper lubrication.
f. Oil Seals.
Metal encased oil seals should not be replaced unless inspection indicates damage.
(1)
Inspect feather edge of oil seal for damage.
(2)
Check seal for loss of pliability and resiliency.
2-8. Repair. Procedures for repair will be the same for most parts and components which comprise the
vehicle components. To avoid repetition of instructions, general procedures for repair are detailed in
a
through
f,
below. Any repair procedures which are peculiar to a specific part or component are covered
in the section or paragraph relating to that item. After repair, clean all parts thoroughly to prevent metal
chips or abrasives used in repair operations from entering working parts of the vehicle components.
a. Castings.
(1)
Replace all cracked castings,
(2)
Repair minor damage to machined surfaces with a fine file, emery cloth, or crocus cloth
dipped in drycleaning solvent. Replace all castings on which machined surfaces are burred or nicked to the
point of impairing subsequent assembly or operation.
(3)
Repair minor warpage of mounting flanges and gasket surfaces by working the surface
across a sheet of emery cloth held tightly on a surface plate or a like flat surface. Finish similarly with
crocus cloth. Replace castings having flanges which are warped to the point of impairing assembly or
operation.
(4)
Repair damaged pipe or capscrew threads in tapped holes with a used tap.
NOTE
Pipe plug threads in castings must be
in good condition to prevent oil or
water leakage.
b. Ball and Roller Bearings.
Replace all galled, pitted or damaged ball bearings. (Refer to TM 9-214)
c. Studs.
Replace all bent or loose studs and studs showing evidence of stretching. Repair minor
thread damage with a thread chaser.
Replace all studs having stripped or damaged threads. Remove and
replace studs as outlined in
(1)
and
(2),
below.
(1)
Removal.
Using a stud extractor, back the studs out slowly to avoid heating and possible
seizure. When the studs are broken off too short to use a stud extractor, drill the stud and extract it
with an easy out.
2-29
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