TM-9-2320-283-34-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1983
TM-9-2320-283-34-1 - Page 60 of 624
TM 9-2320-283-34-1
3-4.
CLEANING (Continued).
g.
Oil Seals, Electrical Cables, and Flexible Hoses.
Clean
with
soap and water.
h.
Ball-Roller Bearings.
(1)
Bearings require special cleaning.
After removing surface oil and gum deposits, place bearing in hot oil,
140
°
F, to loosen congealed oil and grease. Wipe bearings dry, do not use compressed air. After cleaning,
coat bearings with oil, wrap in paper, and hold for inspection.
(2)
See TM 9-214 for information on and care of bearings.
3-5.
INSPECTION.
a.
General Instructions. The procedures for inspections will be the same for many of the parts and components
which make up the vehicle subassemblies.
The general
procedures are detailed in "b" through "g" below.
Some
dimensional standards for
parts have
been fixed at extremely close
tolerances,
so use specification tables. Also use
specified inspection equipment for inspection where
cracks and other damage cannot
be spotted visually.
Exercise
extreme care in all phases of inspection.
b.
Castings.
(1)
Inspect all castings for cracks using a magnifying glass and strong light.
(2)
See MIL-I-6866 inspection, penetrant methods, and MIL-I-6868, inspection process, magnetic particles.
(3)
Particularly check areas around studs, pipe plugs, threaded inserts, and sharp corners. Replace all cracked
castings.
(4)
Inspect
machined surfaces for
nicks, burrs,
or raised
metal.
Mark damaged areas for repair or
replacement.
(5)
Inspect all pipe plugs, pipe plug openings, capscrews, and capscrew openings for damaged or stripped
threads.
(6)
Check all gasket mating surfaces for warpage with a straightedge or surface
plate.
Inspect mating
flanges for
discolorations which may indicate persistant oil leakage.
(7)
Check all castings for conformance to applicable repair standards.
3-6
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