Section Ill. TECHNICAL PRINCIPLES OF OPERATION

TM9-2320-270-20-1

EQUIPMENT DATA - CONTINUED

CAPACITIES (WET)

25 qt (23.7 liters)

Engine oil

Engine oil filter

2 qt (1.9 liters)

(approximately)

32.5 gal. (123 liters)

Cooling system

150 gal. (568 liters)

Fuel

100 gal. (378.5 liters)

Right side tank

50 gal. (189.2 liters)

Left side tank

Transmission fluid (main):

26 qt (24.6 liters)

Serial numbers below 19269

Serial numbers 19269 and

29 qt. (27.4 liters)

above

5.5 qt (5.2 liters)

Transmission fluid (auxiliary)

43 qt (20.34 liters)

Rear axle (forward and aft)

1 qt (0.95 liters)

Alcohol evaporator

100 gal. (378.5 liters)

Hydraulic reservoir

111 cu ft (3.1 cu m)

Stowage capacities

Section Ill. TECHNICAL PRINCIPLES OF OPERATION

Page

Engine and Drive Train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Airbrake System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-21

1-14

Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-18

1-17

Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-16

Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-20

The turning power made by the engine is sent directly to the main transmission. A power ratio is

selected in the main transmission, and the power is sent through a propeller shaft to the auxiliary

transmission. A power ratio is selected in the auxiliary transmission, and the power is sent through a

propeller shaft to the transfer case. The transfer case drops the power from the level of the auxiliary

transmission to the level of the differential propeller shafts, divides the power, and sends it through

the propeller shafts to the front and rear differentials. The differentials divide the power and send it

through the axles to the wheels.

Engine The diesel engine is an internal combustion power unit, in which the heat of fuel is changed

into work in the cylinders of the engine. First, air is compressed in a cylinder by a piston. Then, a

charge of fuel is sprayed into the cylinder. The heat of compression causes the fuel to ignite and push

the piston out. The eight pistons in the engine are connected to a crankshaft. Each time a piston is

pushed out it helps turn the crankshaft and create the turning power.

Main Transmission The automatic transmission has five forward speeds and one reverse. The

turning power of the engine is sent to the transmission by a torque converter. The power ratios for the

five forward speeds and one reverse are set by three planetary gear sets, controlled by six hydraulic

clutches.

1-14