TM 9-2320-285-10
2-14.
OPERATING PROCEDURES (Continued)
d. Towing Trailer (continued).
(4)
When driving tractor more than 1/2 mile with engine speed greater than 2000 rpm, disengage power takeoff.
e. Uncoupling from Trailer.
(1)
Be sure gear shift lever is in neutral (N) position.
(2)
Pull TRAILER AIR SUPPLY valve out to set trailer brakes.
(3)
Extend the trailer landing gear, if retracted, and disconnect the brake air hoses and electrical system cable
from the trailer.
(4)
With tractor brakes released, push the 5th WHEEL lever forward until trailer landing gear is on the ground.
(5)
Momentarily depress brake treadle and FIFTH WHEEL UNLATCH CONTROL firmly until fifth wheel jaws
lock open.
NOTE
If fifth wheel jaws do not lock open, pull fifth wheel secondary lock out and pull manual release lever at
right side of fifth wheel. If fifth wheel jaws do not unlock, notify organizational maintenance.
(6)
Shift into forward gear and drive away from trailer.
f.
Stopping Tractor.
(1)
Let up on accelerator pedal.
(2)
Depress brake treadle to bring tractor to a stop. Avoid sudden application of full braking effort except in case
of emergency.
NOTE
A smooth stop results when foot pressure is gradually released as tractor speed decreases. Do not apply
brakes lightly at first and then harder as tractor slows. This results in a rough stop. The engine may be
used to assist the brakes in stopping the tractor if engine governed speed of 2500 RPM is not exceeded.
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