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Pronar T683
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 of the system,
you can unlock the left, right or both side walls of the trailer load box, depending on the
system version.
3.2.7 FEEDER UNIT
The trailer can be additionally equipped with a hydraulic feeder – figure (3.14) - installed on
the trailer's rear wall in the chute opening. The feeder facilitates precise unloading of loose
materials, without the necessity of load box rising.
Folding feeder (1) is located in the guide (4) and secured in unfolded position by means of
pin (8). The feeder is raised and lowered by means of manual winch (5) located on the
trailer's rear wall. The winch raises the feeder (to working position) or lowers it (to transport
position) by means of cable (5). Additionally, the end part of the feeder can be folded, which
considerably facilitates transport of the trailer with the feeder.
Loose materials are unloaded by rotating auger located in the feeder. The auger is driven by
hydraulic motor (2), which is supplied with hydraulic oil from the tractor's external hydraulic
system. Return conduit (6) is connected to the manifold of the tractor's external hydraulic
system, while the supply conduit (7) is connected to the rear outlet of the second trailer's
tipping system – see figure (3.11). The auger is activated by applying pressure, by means of
three-way valve of the trailer tipping system, to the circuit ((B) valve lever in position 2) –
figure (3.11). Next, open the feeder's hydraulic system (3) – figure (3.14). Check the auger's
rotation direction. If necessary, confirm that hydraulic conduits are connected correctly.
TIP
The hydraulic system of the support is filled with L-HL32 Lotos hydraulic oil.
3.20
SECTION 3
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