Central Hydraulic System - PRONAR T386 Operator's Manual

SECTION 3
angular position with regard to tractor hitch when manoeuvring. Hydraulic accumulators (5)
are used in order to eliminate a minimal swing of axle steering cylinders and reduce load
applied to the system while manoeuvring. On the left side of the trailer, there is a hydraulic
hand pump (8) for filling and setting the pressure in the steering system – see chapter (4.3.3)
"HYDRAULIC STEERING SYSTEM OPERATION".

3.2.8 CENTRAL HYDRAULIC SYSTEM

TIP
The hydraulic system of the trailer is filled with L-HL32 Lotos hydraulic oil.
The hook trailer is equipped with the central independent hydraulic system with the system of
electro-hydraulic protections. Diagram of the system is shown in figure (3.13) Pump (14) of
the system is driven by PTO shaft connected directly to the tractor. Oil tank (13) with capacity
of 100 litres is located on the right longitudinal member of the lower frame. The trailer's
central hydraulic system is controlled by means of manifolds (1) and (2). The manifolds are
controlled by means of the control panel located in the tractor cab. Functions of the control
panel are described in chapter 4.5.1.
The central hydraulic system controls the following functions:
• withdrawing and extending the rear fender (rear underrun protection device),
• locking the suspension,
• lowering and raising the tipping frame by means of two cylinders,
• withdrawing and extending the telescopic hook frame,
• locking the load box,
• rear outputs, e.g. connecting the load box gate.
3.17
Pronar T386