Support Hydraulic System - PRONAR T663/1 Operator's Manual

Pronar T663/1 T663/1 SILO
On the connection conduit, in the vicinity of plug (4), there is a decal (8) identifying the supply
conduit of the hydraulic tipping system.
ATTENTION
Cut-off valve (3) – figure (3.11) - limits the tipping angle of the load box when tipped to the
sides and to the rear. The length of the cable (6) controlling this valve is factory adjusted
by the Manufacturer and must not be changed when the trailer is used.
TIP
The hydraulic system of the trailer is filled with L-HL32 Lotos hydraulic oil.

3.2.5 SUPPORT HYDRAULIC SYSTEM

The hydraulic system – figure (3.12) - is used for automatic unfolding and folding the support
leg (3). This is accomplished by extending or withdrawing hydraulic cylinder piston (4).
Support hydraulic system is supplied with oil from the tractor hydraulic system through
conduit (1). Hydraulic oil selective control valve of the tractor's external hydraulic system is
used to control the support cylinder.
The system is equipped with a hydraulic lock (5) located on the cylinder (4). Application of
hydraulic lock improves safety of trailer operation. During raising or lowering, the support may
damage conduits (rupture, loss of tightness). In such a case, the hydraulic lock will lock
cylinder (4) in a fixed position.
3.16
SECTION 3