TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 522 of 926
TM 9-2320-283-20-1
GENERAL MAINTENANCE INSTRUCTIONS.
3-4.
CLEANING (Continued).
e.
Castings.
(1) Clean inner and outer surfaces of castings and all areas subject to grease and oil with cleaning solvents.
(Refer to
TM 9-247).
(2) Use a stiff brush to remove sludge and gum deposits.
WARNING
Particles blown by compressed air are hazardous.
Always direct air stream away from the
user and other persons in the area.
User must wear safety eyeshield when using
compressed air in cleaning.
(3) Use compressed air to blow out all tapped holes and to dry castings after cleaning.
f.
Oil Passages.
Particular attention must be given to all oil passages in castings and machined parts.
All oil
passages must be clean and free of any obstructions.
(1) Clean passages with wire probes to break up any sludge or gum deposits.
(2) Wash passages by flushing with solvents.
(Refer to TM 9-247).
(3) Dry passages with compressed air.
CAUTION
Do not allow drycleaning solvents to come in contact with seals, cables, or flexible
hoses.
These cleaners cause leather, rubber, and synthetic materials to dry out,
rot, and lose pliability, making them unserviceable.
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) Refer to TM 9-214 for information on and care of bearings.
3-4
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