THEORY OF OPERATION -- CONTINUED
COOLING SYSTEM -- CONTINUED
Air--intake System Two dry--type air cleaners, mounted in the right and left rear of the crew compartment, filter
intake air for the main engine. A damper control, mounted on each air cleaner, is used to select air intake either
from the crew compartment or from outside the vehicle. Refer to TM 9--2350--292--10, Principles of Operation for
Exhaust System Exhaust pipes connect each exhaust manifold to a turbosupercharger. Exhaust gases are
ejected from the engine, via exhaust pipes, through deflector--type louvers at the rear of the vehicle. Refer to
TM 9--2350--292--10, Principles of Operation for additional information.
The cross--drive transmission (1) is a combined transmission (2) with two steering clutch units (3) and two output
reduction drives (4). It transmits power directly from the engine to the track drive sprockets. The transmission (1) is
controlled by the vehicle operator by means of the shifting and steering controls, linkages and the brake control
The cross--drive transmission (1) includes a hydraulic torque converter (5) with automatic lockup clutch, three for-
ward and one reverse--range gear and clutch groups, a cross shaft and bevel drive gears, two steer clutch units (3)
and planetary gear sets, steer drive gearing and two output reduction drive assemblies (4) with brakes. The trans-
mission (1) delivers engine power to the track sprockets at an output torque which varies automatically according to
the driven--load conditions when not in lockup.
There are three forward speed ranges and one reverse. Steering is possible in all drive ranges and neutral. Steer-
ing in neutral causes the vehicle to pivot in place, the tracks turning in opposite directions.