TM 5-3805-290-23-1
THEORY OF OPERATION - CONTINUED
0003 00
TRANSMISSION
0003 00
1.
General.
a.
Powertrain has a transmission that is a countershaft transmission controlled by an ECM in order to provide
smoother shifting.
b.
Diesel engine power is sent from flywheel to torque converter. Torque converter bolts to engine flywheel with a
flex plate connection. Torque converter is fastened to transmission with splines on torque converter hub. Power
flows directly from torque converter to transmission input shaft. Input shaft gears mesh with transmission gears in
order to provide power to transmission output shafts.
c.
Transmission output shaft transfers power through drive shafts and universal joints to front and rear differentials.
Bevel gear and pinion of each differential sends power through differentials and sun gear shafts to final drives.
Axle shafts transmit power from final drives to wheels. An integral parking brake is mounted on transmission
front.
427-B1635