TM-9-2320-361-34
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
MAY 1992
TM-9-2320-361-34 - Page 48 of 764
TM 9-2320-361-34
2-8. CLEANING
a.
General Instructions.
Cleaning procedures will be the same for the majority of parts and components
which make up the vehicle subassemblies. General cleaning procedures are detailed in “b” through “k.”
b. The Importance of Cleaning.
Great care and effort are required in all cleaning operations. The
presence of dirt and foreign material is a constant threat to satisfactory vehicle operation and maintenance.
The following will apply to all cleaning operations:
(1)
Clean all parts before inspection, after repair, and before assembly.
(2)
Hands must be kept free of large amounts of grease, which can collect dust and grit.
(3)
After cleaning, all parts must be covered or wrapped in plastic or paper to protect them from
dust and/or dirt.
WARNING
Compressed air source will not exceed 30 psi (207 kPa). When
cleaning with compressed air, eyeshields must be worn. Failure to
wear eyeshields may result in injury to personnel.
c. External Engine Cleaning.
All electrical equipment and other parts that could be damaged by steam
cleaning or moisture must be removed and all openings covered before cleaning. Dry with compressed air.
d. Disassembled Parts Cleaning.
(1)
(2)
(3)
(4)
(5)
Place all disassembled parts in wire basket(s) for cleaning.
Dry and cover all cleaned parts.
Place on or in “racks” and hold for inspection or repair.
All parts subject to rusting must be lightly oiled and wrapped.
Keep all related parts and components together. Do not mix parts.
WARNING
Improper cleaning methods and use of unauthorized cleaning
solvents may cause damage to equipment or injury to personnel.
Refer to TM 9-247 for cleaning method information.
e. Castings.
(1)
Clean inner and outer surfaces of castings, and all areas likely to collect grease and oil, with cleaning
solvents (TM 9-247).
(2)
Use a stiff brush to remove sludge and gum deposits.
WARNING
Compressed air source will not exceed 30 psi (207 kPa). When
cleaning with compressed air, eyeshields must be worn. Failure to
wear eyeshields may result in injury to personnel.
(3)
Use compressed air to blow out all tapped screw holes and to dry castings after cleaning.
f. Oil Passages.
Particular attention must be given to all oil passages in castings and machined parts. Oil
passages must be kept clean and free of any obstructions.
(1)
(2)
(3)
Clean passages with wire probes to break up any sludge or gum deposits.
Wash passages by flushing with cleaning solvents (TM
9-247).
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.
2-33
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