TOPIC 2. ENGINE SERVICE AND MAINTENANCE, GENERAL INFORMATION

TM 10-3930-644-14&P

TOPIC 2. ENGINE SERVICE AND MAINTENANCE, GENERAL INFORMATION

The disassembly, inspection and reassembly of the

PROTECT DELICATE PARTS AND SURFACES.

engine requires no unusual or special shop equipment.

However, the following factors are very important and

Do not pile engine parts, ignition equipment, carburetors

should not be overlooked.

or other miscellaneous items indiscriminately. 011 any

surfaces likely to rust. Tape finished surfaces subject to

DO NOT INTER-MIX ENGINE PARTS.

scratching or nicking during repair operations.

Mark for position on disassembly; tag assemblies from

CLEAN THOROUGHLY.

different engines; identify parts reground to special

sizes.

No engine is completely overhauled if it is not cleaned

internally and externally to like-new condition. Thorough

DO NOT MIX BOLTS, CAPSCREWS AND WASHERS.

cleaning greatly aids disassembly and helps prevent the

introduction of dirt onto bearings and running surfaces

Capscrews and like parts are of a length, material and

via the mechanic's hands, tools and the work bench.

heat treatment suited to the place they are used.

WORK ACCURATELY.

Use precision gauges where needed.

INSPECT AS ENGINE is DISASSEMBLED.

specifications in TOPIC 1. FITS AND TOLERANCES.

Once engine parts have been disassembled and

LOCATION ON ENGINE.

cleaned, many valuable indications of engine condition

are lost. Check generally for water leaks, oil leaks and

Throughout this manual the terms right, left, front and

signs of unusual or excessive wear.

rear are determined from the view point of the mechanic

standing at and facing the flywheel end of the engine.

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