TM-9-2330-335-14-P
SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)
SEPTEMBER 2008
TM-9-2330-335-14-P - Page 64 of 640
TM 9-2330-335-14&P
0005-10
0005
OPERATION - CONTINUED
3.
Towing Semitrailer.
WARNING
•
When towing the semitrailer with M818, M931 series, or M932 series tractors, the fifth wheel
wedges must be in the locked-in (pushed-in) mode for highway and secondary road use, and in the
locked-out (pulled-out) mode for cross-country operation.
•
Extreme caution must be exercised in all turns, curves, and highway cloverleafs when towing a
high center of gravity containerized load as containerized load may fall off of trailer.
•
Under no circumstances shall speeds exceed the following:
Highway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 mph (89 kph)
Secondary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 mph (56 kph)
Trails. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 mph (24 kph)
Rough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mph (16 kph)
•
Failure to observe these warnings may result in injury to personnel or damage to equipment.
a.
Driving.
When driving the towing vehicle and semitrailer, the overall length of the unit must be kept in mind when
passing other vehicles and when turning. Because the unit is hinged in the middle, backing is also affected. The
semitrailer’s payload will affect stopping and off-road maneuverability.
b.
Turning.
When turning corners, allow for the semitrailer wheels turning inside the radius of the towing vehicle. Make a
right turn by driving the towing vehicle about halfway into the intersection, then cutting sharply to the right. This will keep
the semitrailer off the curb.
Figure 9.
Turning.
05
c.
Stopping.
The brakes of the towing vehicle and the semitrailer are applied at the same time in normal operation when the
driver steps on the brake pedal. Brake pressure should be applied gradually and smoothly. The semitrailer brakes may be
applied separately by using the trailer handbrake control lever on the steering column. On steep downgrades or slippery
surfaces, slowly apply the semitrailer brakes using the trailer handbrake control lever before you apply the towing vehicle
brakes. This will reduce the possibility of jackknifing the semitrailer.
447-0036
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