Hydraulic Tipping System - PRONAR PT512 Operator's Manual

Pronar PT512
cable and the supply hose are connected and when the voltage in supplied to the control
valve.
The electro-hydraulic brake valve (1) – see figure (3.9) – adjusts the braking force depending
on the setting. Switching to a suitable working mode is done manually by the operator before
driving off, by means of the lever (2). Three working positions are available: A – "no load", B
– "half loaded", C – "full load".

3.2.4 HYDRAULIC TIPPING SYSTEM

The hydraulic tipping system allows to automatically unload the trailer by tipping the loading
case to the rear or sideways. The hydraulic tipping system is supplied with oil from the
tractor's hydraulic system. The tractor's external hydraulic system distributor is used to
control the loading case raising.
The trailer tipping system comprises two separate circuits:
• circuit (A) – to supply the trailer's hydraulic cylinder,
• circuit (B) – to supply the second trailer's hydraulic cylinder (if two trailers are
hitched to the tractor).
A three-way valve is used to supply these circuits (2) – figure (3.10). The lever of this valve
can be placed in two positions:
• 1 – trailer's tipping circuit opened – circuit (A),
• 2 – second trailer's tipping circuit opened – circuit (B).
On the connector cable, in the vicinity of socket (4), there is a decal (8) identifying the supply
hose of the hydraulic system tipping circuit.
ATTENTION
A cut-off valve (3) – figure (3.10) – limits the tipping angle of the loading case when tipped
to the rear and sideways. The length of the control cable (6) controlling this valve is
factory adjusted and must not be changed when the trailer is being used.
3.14
CHAPTER 3