Side Wall Opening Hydraulic System - PRONAR T683 Operator's Manual

Pronar T683
The hydraulic system is designed to extend and withdraw the support leg (3). This is
accomplished by extending or withdrawing hydraulic cylinder rod (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 raises trailer safety. During raising or lowering, the support may damage
conduits (rupture, loss of tightness). The hydraulic lock will lock cylinder (4) in a fixed
position.
TIP
The hydraulic system of the support is filled with L-HL32 Lotos hydraulic oil.

3.2.6 SIDE WALL OPENING HYDRAULIC SYSTEM

Side wall opening hydraulic system (Figure (3.12)) is used for automatic opening and closing
the front side walls (2) and rear side wall (15) - Figure (3.2). Unlocking the front side wall is
accomplished using hydraulic cylinders (2) located on the front wall. Opening of the rear side
walls takes place by delivering the oil to the cylinders placed at the rear part of the upper
frame. The hydraulic wall opening system is supplied with oil from the tractor's hydraulic
system. Hydraulic oil selective control valve of the tractor's external hydraulic system is used
to control the side wall opening mechanism.
By delivering oil from the tractor selective control valve to hydraulic cylinders, you can open
or close the left, right or both sides of the trailer load box.
TIP
The hydraulic system of the support is filled with L-HL32 Lotos hydraulic oil.
3.16
SECTION 3