TM 5-2420-230-10
1-13. POWER TRAIN.
Power for the vehicle is provided by a diesel engine (1) which is coupled directly to an automatic transmission (2). Power from
the transmission is transferred to the front and rear axles (3) through the front and rear drive shafts (4) and U-joints (5).
a. Engine. The engine is a 185-hp, 6-cylinder, 5.88-L diesel engine.
b. Automatic Transmission. The transmission
provides 12 gears and 8 speeds controlled by the
Electronic Gear Selector (EGS): four high-range
and four low-range forward gears, and two
high-range and two low-range reverse gears.
The EGS (1) is comprised of a mechanical shift
lever (2), a microcomputer, and an indicator
display (3) integrated into the shift lever housing.
The EGS computer system receives information
internally from the shift lever (2) and externally
from a speed sensor. This information, together
with acquired vehicle speed information, is used
to shift to the requested gear, or to prevent this
while indicating this on the indicator display (3).
c. Axles and Suspension. The front and rear axles are hub-reduction, full-floating, axle-shaft type. The front axle
provides steering. The rear axle is nonsteering. Both the front and rear axles are equipped with wheel differentials. The
front and rear suspensions consist of shock absorbers, air bags, and check straps. Check straps are used to limit the
separation of the suspension and avoid damage to the air bags.
d. Drive Shafts and U-Joints. The drive shafts and U-joints transmit engine power to the axles.
