COUPLE TO TRUCK (ALL EXCEPT M917A1 AND M917A1
For M916A1 and M916A2, when coupling to M870 semitrailer, pay
out winch cable (paragraph 2-28) and attach to gooseneck on trailer. Release vehicle
parking brake to allow vehicle to be pulled back under trailer until king pin locks into
fifth wheel. Disconnect and stow winch cable (paragraph 2-25).
One 12-volt light cable and one 24-volt light cable are
stored in tool box.
Connect air hoses and light cables. Push trailer air supply control
knob (paragraph 2-2) IN, open trailer supply valve, and set trailer control valve hand
Backing SLOWLY helps to prevent hitting too hard in
coupling and damaging king pin.
Back up slowly until fifth wheel locks firmly to king pin.
Check king pin connection and fifth wheel slide locks by pulling trac-
tor gently forward against locked trailer brakes or blocked wheels. As resistance is
felt, put transmission selector lever in reverse and gently back tractor to verify fifth
wheel slide locks in both directions. When resistance is felt, put transmission selector
lever in Neutral (N) and set parking brake.
Verify that lock release handles are in.
Check semitrailer lights.
Stow wheel blocks.
Lift and secure semitrailer landing gear and stow float pads.