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TM 9-2320-270-10
COUPLING AND UNCOUPLING – CONTINUED
CAUTION
primary and secondary lock handles must be pulled out and locked after each
false hook-up to be sure there is a recouple without damage to equipment.
9. If semitrailer was not correctly picked up, pull both primary and secondary lock
handles (1) and (2) out and hook them, and repeat steps 1 through 8.
10. Apply PARKING BRAKE (3).
11. Connect tractor-to-trailer air and electricity as follows:
a. Connect red emergency air hose coupling (4) to semitrailer emergency gladhand (5).
b. Connect blue service air hose gladhand (6) to semitrailer service gladhand (7).
c. Connect tractor-to-trailer electrical cable connector (8) to tractor electrical connector (9)
and cable connector (10) to semitrailer connector socket (11).
12. Place chocks (12) behind M911 Truck Tractor and semitrailer wheels.
2-86
Change 5
P I N : 0 3 3 2 1 0 - 0 05
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