TM-9-2320-260-20
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
APRIL 1995
TM-9-2320-260-20 - Page 59 of 1337
TM
9-2320-260-20
1-19. POWER SYSTEMS OPERATION (Contd)
b. Powertrain System Operation.
The powertrain system is the same on all models covered in this manual with the exception of the long
wheelbase models which have an additional propeller shaft and center bearing. The powertrain transmits
engine power to the vehicle. Major components of the powertrain are:
A
B
C
D
E
F
ENGINE –
Provides mechanical power for powertrain component operation.
TRANSMISSION –
Adapts engine power to meet different speeds and power requirements.
TRANSFER CASE –
Distributes power to front and rear axles.
UNIVERSAL JOINTS –
Permit power to be transmitted at slight angles between transmission
and transfer case, and between transfer case and differentials.
DIFFERENTIALS -
Distribute power to left and right axle shafts independently.
AXLES –
Transmit power from differentials to wheels.
PROPELLER SHAFTS –
Driveshafts that transmit power from the transmission to the transfer
case and from transfer case to the differentials.
1. Front differential-to-transfer case propeller shaft
2. Transmission-to-transfer case propeller shaft
3. Transfer case-to-forward-rear differential propeller shaft
4. Forward-rear differential to rear-rear differential propeller shaft
1-46
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