2-13. RETRACTION/ENGAGEMENT OF FLATRACK LOCKS (NORMAL) (CONT).
The following procedure should be used when the flatrack locks on the trailer will not release:
Chock trailer tires at Axle No. 2 and No. 3 locations. Push flatrack release button in on trailer.
Verify that the locks have not released (check indicating pins on the left and right side of the trailer).
Back truck up to trailer with the LHS hook positioned to make load transfer from truck to trailer.
Back the truck up until the trailer bumper stop is underneath the truck bump stop, pull the truck
forward approximately one to two inches (25.40 to 50.80 mm).
Connect the emergency gladhand from trailer to the truck and charge the trailer air system. Check
the load lock indicating pins to see if locks have released and disconnect the emergency air line. Make
sure that the flatrack release button is pushed in. If the load locks have released go to Step (g).
Using the "Manual Hook Arm Mode" move the joystick to the load position until the weight of the
flatrack is off of the front of the trailer and that there is approximately two to four inches (50.80 to
101.60 mm) of clearance between the front edge of the flatrack and the trailer deck.
While holding the truck brakes, switch the LHS mode switch to the "Manual Main Frame Mode".
Move the joystick to the unload position until the trailer can be seen pushing backwards.
Verify that the locks have released. If the flatrack locks have not released use the manual tools to
release the locks, (Para 2-14).
Switch LHS mode switch to the "Automatic position" and move the joystick to the load position.
Offload flatrack from trailer to truck.