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 TM 9-2815-226-34-1
CHAPTER 3
REPAIR OF ENGINE ASSEMBLY
Section I. GENERAL
3-1. PURPOSE. The purpose of this chapter is to provide complete instructions for the repair of engine subassemblies.
General procedures are provided which are applicable to all operations, followed by detailed instructions for each
subassembly. General procedures for cleaning, inspection, repair, and assembly are outlined below.
3-2. CLEANING
a. General. The procedures for cleaning will be the same for most parts and components which comprise the
engine subassemblies. To avoid repetition of instructions, the general procedures for cleaning are detailed in b
thru f below. Any cleaning procedures which are peculiar to a specific part or component are covered in the
section or paragraph relating to the item.
b. Cleaning Instructions. The importance of cleaning must be thoroughly understood by maintenance personnel.
Great care and conscientious effort are required in all cleaning operations. The presence of dirt or foreign
substances is a constant threat to satisfactory engine operation and maintenance. The following should apply to
all cleaning operations:
CAUTION
DO NOT ALLOW DRY CLEANING SOLVENTS TO COME IN CONTACT WITH SEALS
OR FLEXIBLE HOSES. THESE CLEANERS CAUSE LEATHER, RUBBER AND
SYNTHETIC MATERIALS TO DRY OUT, ROT, AND LOSE PLIABILITY.
(1) Clean all parts before inspection, after repair, and before assembly.
(2) Hands should be kept free of any accumulation of grease which can collect dust and grit.
(3) After cleaning, all parts should be covered or wrapped in plastic or suitable paper to protect them from dust
and dirt.
c. Castings.
(1) Clean inner and outer surfaces of castings and all areas subject to oil and grease, with dry cleaning solvent.
(2) Remove sludge and gum deposits from castings, using a stiff brush.
3-1
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