Suspension Hydraulic System - PRONAR T900 Operator's Manual

Pronar T900 SECTION 3

3.2.3 SUSPENSION HYDRAULIC SYSTEM

The hydraulic system of the suspension is supplied with hydraulic oil from the tractor's
external hydraulic system. The hydraulic system filling is performed only when hitching the
trailer to the tractor for the first time - see section (4.3.2) "SETTING THE HYDRAULIC
SUSPENSION". There is no need to fill the system with oil before each use of the trailer
unless the suspension has to be raised or lowered in order to reduce or increase the total
trailer height.
FIGURE 3.4 Design of the suspension hydraulic system
(1) quick coupler - plug for rising the right side of the trailer, (2) quick coupler - plug for rising
the front axle, (3) quick coupler - plug for rising the left side of the trailer, (4) hydraulic valve,
(5) hydraulic cylinder of suspension system, (6) hydraulic accumulator, (7) information decal
The suspension hydraulic system consists of six suspension hydraulic cylinders (5) which
serve as shock absorbers. Three hydraulic cylinders are located on the right side and three
on the left side of the suspension system. The hydraulic cylinders are connected together by
means of hydraulic conduits. Two hydraulic accumulators are installed in the system circuits,
whose task is to dampen the suspension vibrations. Connection conduits are terminated with
3.8