Air Slide Operation
m2+ d 17.04.002
- Set the air-slide switch to SLIDE.Ensure the locking plungers have released.For Fontaine fifth wheels, see Fig.Locked Fontaine Air-Operated Sliding Fifth Wheel and see Fig.Unlocked Fontaine Air-Operated Sliding Fifth Wheel for depictions of the locked and unlocked states.For Holland fifth wheels, locking plungers retract as shown in Fig. Holland Air-Operated Sliding Fifth Wheel.For Jost fifth wheels, the mechanism activates as shown in Fig. Jost Sliding Fifth Wheel.
- Lower the trailer landing gear just enough to remove the weight from the tractor.
- Pull the red trailer-air-supply knob to set the trailer-parking brakes.
- Slowly move the tractor forward or backward until the fifth wheel is in the desired location.
- Apply the tractor parking brakes.
Note: Ensure the trailer landing gear does not come in contact with the tractor frame or other components, and that the front of the trailer will not come in contact with the rear of the cab or other components if they extend beyond the rear of the cab.
- Set the air-slide switch to LOCK. Visually inspect the
locking wedges or plungers to make sure that they are fully inserted
in the slide rail slots. The fifth wheel may need to be moved slightly
to enable the locking wedges to fully lock.Further verify that the plungers have engaged by tugging the tractor forward while the trailer brakes are locked and the wheels are chocked.
Warning: Check that the locking wedges have seated in the slots. Failure to achieve complete lockup may allow disengagement of the tractor from the trailer, possibly resulting in serious personal injury or death.
