Hydraulic Tipping System - PRONAR T672ECO User Manual

Construction and principle of operation

3.5 HYDRAULIC TIPPING SYSTEM

Figure 3.9 Three-way tipper valve
The hydraulic tipping system is used for
automatic unloading of the trailer by tilting
the load box backwards or on sides. The
hydraulic system of the unloading mech-
anism is supplied with oil from the tractor's
hydraulic system. The tractor's external
hydraulic oil distributor is used to control
the lifting of the load box.
In the trailer, the installation consists of
two independent circuits:
• circuit (A) - for supplying the hydraulic
cylinder of the first trailer,
• circuit (B) - to supply the second
trailer hydraulic cylinder in case of
connecting two trailers to the tractor.
A three-way valve is used to turn on these
circuits (Fig. 3.9). The lever on this valve
can occupy 2 positions:
ADVICE
The trailer hydraulic braking system was filled with
L-HL32 Lotos hydraulic oil.
The pressure of the electrohydraulic brake valve (1)
- figure (3.11) is set by the manufacturer and it is
forbidden to regulate it when using the trailer.
• 1 - trailer tipping open circuit - circuit
619-G.09-1
• 2 - second trailer tipping circuit open
A sticker (8) has been placed on the con-
necting pipe, in the vicinity of the plug (4),
which identifies the hydraulic feed pipe of
the tipping system.
The hydraulic system has a shut-off valve
(3) controlled by a cable (6) to limit the
swing angle of the load box.
The length of the control cable is set by the Manufac-
turer and it is forbidden to adjust it by the User.
CAUTION
(A),
- circuit (B).
CAUTION
PRONAR T672ECO
Chapter 3
3.13