PRONAR T286 Operator's Manual page 66

Pronar T286 SECTION 3
are completely withdrawn (the rest position of the tipping frame). Anti-shock valve (8) protects
the system against sudden pressure jumps and ensures smoother operation of cylinders.
Hydraulic cylinder (4) controls the interlock which ensures attachment of the load box to the
trailer's chassis during transport and unloading. If the load box interlock is in the locked
position, the hook frame shifting cylinder (3) can not be controlled. The hook frame is
controlled only when the rear fender is withdrawn, load box interlock cylinder (4) is unlocked
and the tipping frame is in its resting position.
The system is equipped with hydraulic locks (10) located on cylinders (3, 4, 6). Hydraulic lock
improves safety of trailer operation. In the event of damage to hydraulic system conduits
(rupture, loss of tightness), the hydraulic lock will lock the cylinder in a fixed position.
On the rear beam of the trailer, there are hydraulic outputs terminated with quick couplers-
sockets (12), which can be used, for example, for supplying the hydraulic gate of the load
box.
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