OPERATE SLIDING FIFTH WHEEL (M915A2) (Cont).
Place fifth wheel slide control valve lever (3) in UNLOCK position to
release two slide locking plungers (5). Ensure that plungers release. If plungers did
not release, lower landing gear to relieve pressure and allow fifth wheel to slide more
Drive tractor slowly forward or backward to position fifth wheel.
After sliding to desired position, engage two slide locking plungers
(5) by placing fifth wheel slide control valve lever (3) in LOCK position.
Do not operate vehicle if slide locking plungers are not
fully engaged and landing gear is not fully retracted.
This could result in damage to tractor, trailer, and land-
Visually check that two slide locking plungers (5) are retracted and
fully engaged. It may be necessary to leave trailer brakes locked and
slightly to engage plungers in rack teeth (4).
If lowered, raise landing gear to fully retracted position.