Table of Contents
Advertisement
SECTION 3
Hydraulic tipping system, figure (3.11), is used for automatic unloading of trailer by tipping the
load box to the rear or sideways. The hydraulic tipping 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 load box tipping mechanism.
The trailer system consists of two independent 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).
Three-way valve (2) is used to activate these circuits – figure (3.11). This valve's lever can be
placed in two positions:
• 1 - the trailer's tipping circuit is opened - circuit (A),
• 2 - the second trailer's tipping circuit is opened – circuit (B).
On the connection line, 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 (3.11) limits the tipping angle of the load box when tipped to the
sides and 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 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 rod (4). Support
hydraulic system is supplied with oil from the tractor hydraulic system through line (1).
Hydraulic oil selective control valve of the tractor's external hydraulic system is used to
control the support cylinder.
3.17
Pronar 683
Advertisement
Table of Contents
