TM-9-2320-260-10
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; OPERATOR'S MANUAL
JUNE 1985
TM-9-2320-260-10 - Page 31 of 411
Change 4
1-17
TM 9-2320-260-10
a. Purpose of the Vehicle.
The M818 tractor truck has a fifth wheel used to haul semitrailer loads
up to 37,500 pounds (17,025 kilograms) maximum (refer to table 1-3). When connected to a
semitrailer, the fifth wheel pivots up, down, and sideways, to allow for changes in the road. This
vehicle comes equipped with a front winch, making it more versatile in tactical operations under
difficult field conditions. This vehicle also comes equipped without a front winch.
b. Performance.
The M818 tractor truck can ford hard-bottom water crossings up to 30 inches
(76.2 centimeters) without a deepwater fording kit, and 78 inches (199.1 centimeters) with the kit.
c. Special Limitations.
Fifth wheel cannot pivot more than 21 degrees up, 15 degrees down, or
7 degrees sideways. For this reason, semitrailer operations cross-country are limited to gradual grades
over known terrain.
1-14. TRACTOR TRUCK W/W AND WO/W: M818
TRACTOR TRUCK (M818)
(RIGHT FRONT VIEW)
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