TM-9-2815-224-34-P
ENGINE, DIESEL:8-CYLINDER TURBOCHARGED, DETROIT DIESEL CORPORATION MODEL 8V92TA
DIRECT SUPPORT AND GENERAL SUPPORT MAINTENACE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JANUARY 1988
TM-9-2815-224-34-P - Page 27 of 554
TM9-2815-224-34&P
Section II.
EQUIPMENT DESCRIPTION
Equipment Information
I 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.
I 1-11. LOCATION AND DESCRIPTION OF COMPONENTS. I
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
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