PRONAR PT512 Operator's Manual page 89

CHAPTER 4
The trailer is unloaded in the following sequence:
the tractor and the trailer must be parked to drive forwards on a flat and hard
ground,
FIGURE 4.4 Securing the tipping pins
(1) tipping pin I, (2) tipping pin II, (3) tipping pin handle
immobilize the tractor and the trailer with the parking brake; additionally wheel
chocks can be used,
4.21
Pronar PT512