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Design and operation
3.12
HYDRAULIC STEERING SYSTEM
The trailer can be equipped with hydraulic
steering system for controlling the rear
axle of the trailer. This solution improves
steering characteristics, reduces load ap-
plied to the trailer structural elements, re-
duces terrain damage and tyre wear as
well as improves the comfort of driving the
tractor with the trailer.
The rear steering axle is equipped with cyl-
inder (2) – figure (3.18), which is connected
with double-acting cylinder (1) located
next to the drawbar by means of rigid and
flexible conduits creating a closed-circuit.
1
Figure 3.18 Diagram of the hydraulic steering system
(1) axle steering cylinder, (2) axle turning cylinder, (3) hydraulic accumulator, (4) manometer,
(5) hydraulic valve, (6) hand pump
4
6
The system is controlled using the string
located on the right side of the drawbar.
The string's ball-shaped end is connected
with the tractor's hitch.
The system is filled with oil in the amount
of approximately 5 litres. The reference
list of oils is included in annex A to this
publication.
During movement of cylinder (1), oil in
the system flows to axle turning cylinder
(2) turning the wheels. Rod of cylinder (1)
moves when the trailer's drawbar changes
its angular position with regard to tractor
5
PRONAR T700M/1
Section 3
2
3
623-G.14-1
3.25
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