V.ORLANDI RP10 Installation, Operating And Maintenance Instructions page 53

INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS
CAUTION: inspect to see that the coupling-up procedure has
been conducted correctly; check that the operating handle
(19c) has regularly returned back
into position.
CAUTION: in the event that the operating handle (19c) is not
back in position, try moving the tractor unit forwards for about
50 cm and then back again so that the semi-trailer king pin is
repositioned correctly to
enable regular coupling.
If the operating handle (19c) will still not turn back into position
regularly,
or if the semi-trailer counter plate does not completely rest on
the fifth
wheel surface, vehicle travel is strictly prohibited, no matter
6)
Wind the semi-trailer landing legs fully up to stroke end.
FIFTH WHEEL Rp10
PAG.
17/36
CHAP. 3
REV. 00