Shear Type Drawbar Support Hydraulic System - PRONAR T669 Operator's Manual

Pronar T669
On the connection conduit, in the vicinity of socket (4) there is a decal (8) identifying the
supply conduit of the hydraulic system tipping circuit.
IMPORTANT!
Cut-off valve (3) – figure (3.9) limits the tipping angle of the load box when tipped to the
rear. The length of the control 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 SHEAR TYPE DRAWBAR SUPPORT HYDRAULIC SYSTEM

The parking stand hydraulic system is used to control the support to set drawbar at the
correct height. Support hydraulic system is fed by the tractor hydraulic system through the
hydraulic conduits (1) and (2). Identification decals are placed on the support lowering
conduits in the vicinity of connectors (item15 - Table (2.1)) and support raising conduit (item -
Table (2.1)).
Raising or lowering the support is done by extending or retracting the hydraulic cylinder
piston rod (4). Hydraulic oil manifold of the tractor's external hydraulic system is used to
control the support cylinder.
The system is equipped with a hydraulic lock (6) located on the hydraulic cylinder (4). The
lock locks the support in a fixed position in case of damage to hydraulic conduits (abrasion,
breaking).
TIP
The hydraulic system of the support is filled with L-HL32 Lotos hydraulic oil.
3.14
SECTION 3