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TM 9-2320-270-10
COUPLING AND UNCOUPLING – CONTINUED
5.
6.
Pull fifth wheel secondary lock handle (7) all the way out and raise it to let handle notch
hook on fifth wheel casting. This will unlock and hdd secondary lock.
Pull fifth wheel primary handle (8) and raise it to let handle notch hook on fifth
wheel casting. This will unlock and hold primary lock.
7. Direct crew member to watch to make sure semitrailer kingpin clears properly during
Uncoupling.
CAUTION
Make sure kingpin clears rear frame cross member when M911 Truck Tractor is
moved forward.
8. Release parking brake and move M911 Truck Tractor slowly forward; allowing semi-
trailer gooseneck (9) and kingpin (10) to slide down fifth wheel and ramps until semi-
trailer landing gear touches ground.
LOADING AND UNLOADING
Praparing M911 Truck Tractor for Loading and Unloading
1. Aline M911 Truck Tractor and semitrailer as close as possible to the payload vehicle if
loading.
TA220862
2-89
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