Section II. EQUIPMENT DESCRIPTION - TM-9-2815-224-34-P0027

TM9-2815-224-34&P

EQUIPMENT DESCRIPTION

Section II.

Equipment Information

1-10. EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES. The M977 series

8V92TA engine is an eight-cylinder, V-Type, two-cycle, turbocharged diesel engine. Refer to

TM 9-2320-279-10 for equipment characteristics, capabilities, and features.

1-11. LOCATION AND DESCRIPTION OF COMPONENTS.

a. Turbocharger. (See fig. 1-1) Mounted on top of blower. Designed to increase overall efficiency of

engine by delivering high pressure air through engine blower to engine cylinders.

b. Governor. (See fig. l-l) Mounted on front end of blower and driven by one of blower rotors. Used

to control engine idle speed and limit maximum operating speed of engine.

e. Fan Clutch. (See fig. 1-1) Mounted on front of engine behind fan. Is controlled by temperature

valve and automatically engages fan to lower engine temperature.

d. Water Pump. (See fig. l-l) Mounted on front engine cover and driven by camshaft gear. It

circulates engine coolant through cylinder block, cylinder heads, radiator and oil cooler.

e. Oil Pan. (See fig. 1-1) Mounted on bottom of cylinder block. It provides a reservoir for engine oil,

f. Oil Filter. (See fig. 1-1) Mounted on lower right-hand side of cylinder block just behind oil cooler.

Filters out impurities as oil is forced through element.

g. Exhaust Manifold. (See fig. 1-1) Screwed to cylinder head. Routes by-product gases expelled from

engine to attached exhaust piping.

h. Valve Rocker Covers. (See fig. 1-1) Completely encloses valve and injector rocker arm

compartment at the top of cylinder head.

i. Fuel Pump. (See fig. 1-1) Attached to governor housing and driven off right-hand blower rotor. It

transfers fuel (diesel) from supply tank to fuel injectors.

j. Blower. (See fig. 1-1) Screwed to top of cylinder block. Provides continuous and uniform supply of

air to engine.

k. Engine Brake. (See fig. 1-1) Located on top of cylinder head, under valve rocker cover. Works to

slow engine speed to help slow truck.

I. cylinder Head. (See fig. 1-1) One screwed on each cylinder bank and contains exhaust valves, fuel

injectors and valve and injector operating mechanism.

m. Cylinder Block. (See fig. 1-1) Main structural part of engine. Provides rigidity and strength and

ensures alinement of block bores and bearings under load.

n. Oil Pump. (See fig. 1-1) Mounted on bottom of cylinder block, inside oil pan. Pumps oil from oil

pan into filter and various cavities and passages of engine to provide lubrication and cooling.

1-3