2-13. RETRACTION/ENGAGEMENT OF FLATRACK LOCKS (NORMAL) (CONT).
Push in flatrack locking knob (1) to retract locks (2).
The flatrack locks indicating pins should be retracted "in" when the flatrack locks are released.
There is one indicating pin on each side of the trailer.
(10) Check locks (2) to ensure locks are retracted. If locks did not retract, refer to Para 2-14 for manual
retraction of locks.
Pull out trailer air supply knob (4) and uncouple trailer emergency brake line (3).