Steering Lock Hydraulic System - PRONAR T386 Operator's Manual

Pronar T386 SECTION 3

3.2.11 STEERING LOCK HYDRAULIC SYSTEM

The trailer can be provided with passively steered steering axles. Axle design enables easier
cornering and easier manoeuvring on marshy terrain. The wear of tyres and mechanical
components, such as bearings and trailer suspension components, is consequently reduced.
The axle steering lock is enabled by the 2-line hydraulic system shown in figure (3.18). The
steering lock is controlled from the tractor cabin with the lever of the external selective control
valve. Locking and releasing the lock takes place by extending or retracting the hydraulic
cylinder piston rod (9). Hydraulic lines (10) to connect with the tractor are equipped with quick
couplings - plugs (11).
The steering arms must be locked when reversing, otherwise the trailer will tend to turn
uncontrollably to the left or right when reversing. After reversing, release the lock by releasing
the lever.
FIGURE 3.18 External axle steering lock hydraulic system diagram
(1) hydraulic cylinder, (2) hydraulic line, (3) quick coupler plug
3.26