TEST OR INSPECTION
KINGPIN FAILS TO LOCK IN FIFTH WHEEL
Is proper kingpin (2 inches or 3 1/2 inches) installed in Fifth Wheel Towing Device?
If no, install proper kingpin size for compatibility to prime mover (WP 0034).
If yes, go to step 2.
Is kingpin bolster plate resting on the prime mover's fifth wheel and parallel with the
prime movers chassis while coupling?
If no, adjust position of kingpin bolster plate (WP 0006).
If yes, go to step 3.
Is fifth wheel lockout device on prime mover open before coupling?
If no, refer to prime mover TM to open lockout device.
If yes, refer to prime mover TM to determine fault.
END OF WORK PACKAGE