Volvo VHD - Manual (Page 281)

Fifth Wheel Instructions 275
Trailer Uncoupling Procedures
For Tractors With Air Ride Suspension:
Set the system park brake on the tractor.
Set the trailer brakes by pulling out the
trailer air supply knob.
W5000921
Chock the trailer wheels. Use two chocks
(one on the front and one on the rear of the
wheel) on both sides of the trailer.
W9000263
Wind down the landing gear until it touches
the ground and then give it a few extra
turns in low gear. Do not raise the trailer
off of the fifth wheel. Fold down or remove
the crank handle and place it in the crank
handle holder.
NOTE! In poor ground conditions, it may
be necessary to provide a stable base for
the landing gear.