V.ORLANDI RP10 Installation, Operating And Maintenance Instructions page 54

INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS
3.2 UNCOUPLING
Lock the semi-trailer wheels;
1)
2) Wind down the semi-trailer landing legs until they touch the ground;
3)
Release the fifth wheel lock mechanism as follows:
Draw the operating handle (19c) upwards whilst pushing it towards
the
front end of the vehicle then draw it outward, towards the vehicle's
outside
19c
1
CAUTION: do not use gears or any external mechanism to open
up the fifth wheel.
If the operating handle will not unlock, check that all the
CAUTION: If the operating handle (19c) is hard to operate on,
reverse the tractor unit to relieve the pressure put on the fifth
wheel jaw by the semi-trailer king pin.
4)
Uncouple the tractor unit by moving slowly forwards until the semi-
trailer king pin has moved out of the fifth wheel coupling point by
about 30-50 cm.;
CAUTION: contact between the fifth wheel and the semi-trailer
counter plate must never be broken.
FIFTH WHEEL Rp10
19c
3 3
1 1
PAG.
18/36
CHAP. 3
REV. 00