TM 5-2420-231-23-3
0369
CLEANING INSTRUCTIONS CONTINUED
(2) To prevent contamination, hands should be kept free of any accumulation of grease, which can collect
dust, dirt, and grit.
(3) After cleaning, all parts should be covered or wrapped to protect them from dust and dirt. Parts that
are subject to rust should be lightly oiled.
2. External Engine Cleaning.
a. Protect all electrical equipment that could be damaged by steam or moisture before steam cleaning.
b. Cover all openings before steam cleaning.
c.
After cleaning, dry and apply a light coat of oil to all parts subject to rust.
d. Clear out all tapped (threaded) holes with compressed air to remove dirt and cleaning fluid.
3. Cleaning Disassembled Parts.
a. Place all disassembled parts in suitable containers for cleaning.
b. Clean components, following the instructions in this work package.
c.
Dry and cover all cleaned parts.
d. All parts subject to rusting must be lightly oiled and wrapped.
e. Keep all related parts and components together. Do not mix parts.
4. Castings.
a. Clean inner and outer surfaces of castings and all areas subject to grease and oil with solvent cleaning
compound.
b. Use a stiff brush to remove sludge and gum deposits.
c.
Clear out all tapped (threaded) holes with compressed air to remove dirt and solvent cleaning compound.
5. Oil Passages. Particular attention must be given to all oil passages in castings and machined parts. Oil
passages must be clean and free of any obstructions.
a. Clean passages with wire probes to break up any sludge or gum deposits.
b. Wash passages by flushing with solvent cleaning compound.
c.
Dry passages with compressed air.
6. Oil Seals and Flexible Hoses.
CAUTION
Washing flexible hoses and oil seals with solvent cleaning compound or mineral spirits will
cause serious damage or destroy the material.
a. Wash flexible hoses with a mild solution of detergent and water and wipe dry.
b. Oil seals are generally damaged during removal; cleaning will not be necessary since new seals will be
used in assembly.
7. Bearings. Refer to TM 9-214, Inspection, Care, and Maintenance of Antifriction Bearings, for complete
instructions.
8. Machined Surfaces.
a. Clean machined surfaces with solvent cleaning compound.
b. Dry surfaces with compressed air.
9. Mated Surfaces.
a. Remove old gasket and/or sealing compound using a wire brush and solvent cleaning compound.
b. Lightly coat with oil and wrap all parts subject to rust before storing.
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