TM-9-2320-386-10
2-1/2-TON, 6X6, M44A3 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; EXTENDED SERVICE PROGRAM (ESP); OPERATOR’S MANUAL
JANUARY 1996
TM-9-2320-386-10 - Page 30 of 223
TM 9-2320-386-10
1-14
Change 1
Section III. PRINCIPLES OF OPERATION
This section explains how components of the ESP vehicles work. A functional
description of these components and their related parts will be covered in the follow-
ing paragraphs. To find the operation of a specific system or component, see the
Principles of Operation Index below.
1-19.
Engine System Operation
1-14
1-20.
Fuel System Operation
1-14.1
1-20.1.
Compressed Air System Operation
1-14.1
1-21.
Central Tire Inflation System (CTIS) Operation
1-14.1
1-22.
Cooling System Operation
1-15
1-23.
Electrical System Operation
1-15
1-24.
Simplified Test Equipment/Internal Combustion
Engines – Reprogrammable (STE/ICE-R)
1-15
1-25.
Front Winch Operation
1-15
The Caterpillar 3116 engine has a 403 cu. in. (6.6 L) displacement, with 4.13 in.
(105 mm) bore and 5.0 in. (127 mm) stroke. The engine is a four-stroke cycle, in-line
6 cylinder with direct fuel injection. The engine is turbocharged with an air-to-air
aftercooler (ATAAC) system, and is rated 170 hp at 2700 RPM.
The engine lubricating oil, which is both cooled and filtered, is supplied by a gear-
type pump. Bypass valves provide unrestricted flow of lubrication oil to the engine
parts when oil viscosity is high, or if either the oil cooler or the oil filter elements
should become clogged.
1-19. ENGINE SYSTEM OPERATION
PARA.
TITLE
PAGE
NO.
NO.
1-18. PRINCIPLES OF OPERATION INDEX
1-17. GENERAL
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