TM 9-2320-285-10
2-14.
OPERATING PROCEDURES (Continued)
c.
Coupling to Trailer (continued).
(4)
To couple to a low trailer, proceed as follows:
(a)
Shift to neutral and push 5th WHEEL lever forward to lower fifth wheel.
(b)
Pull out PARKING BRAKE valve to apply tractor spring brakes.
(c)
Pull TRACTOR AIR SUPPLY valve out, connect service and emergency air hoses and electrical cable
to trailer.
(d)
Push TRAILER AIR SUPPLY valve in and pull hand brake control to set trailer service brakes.
(e)
Shift to reverse and release tractor brakes.
(f)
Slowly back tractor under trailer until fifth wheel plate is just covered by nose of trailer.
(g)
Shift to neutral and pull 5th WHEEL lever back to raise fifth wheel approximately five inches.
(h)
Slowly finish backing tractor under trailer until fifth wheel jaws engage trailer kingpin and lock
automatically.
(i)
Proceed to step (11) below.
2-39
