Chapter 3. ENGINE MAINTENANCE

TM5-241O-237-34

CHAPTER 3

ENGINE MAINTENANCE

Section I.

DESCRIPTION AND DATA

GENERAL

3-1.

Engine maintenance procedures not covered in this chapter can be found in TM5-2410-

237-20.

3-2. PRINCIPLES OF OPERATION

The engine is a six cylinder, inline, four-stroke-cycle, turbocharged, fuel

injected, liquid cooled diesel.

A 4.75 in. bore and 6 in. stroke produces 638 cu. in. and 200 flywheel horsepower

at 2000 rpm. Firing order is 1, 5, 3, 6, 2, 4 and the engine rotates C.C.W. as

viewed from the flywheel end, with cylinder #1 furthest from the flywheel.

Two stellite-faced overhead valves per cylinder with valve rotators. Cam-ground

and tapered aluminum alloy pistons with three ring design, cooled by oil spray.

Steel-backed aluminum bearings and through-hardened crankshaft. Pressure

lubrication with full-flow, spin-on filters and integral oil cooler.

3-1