Main Brake- Mechanical Suspension - PRONAR T286 Operator's Manual

SECTION 3

3.2.4 MAIN BRAKE- MECHANICAL SUSPENSION

The hook trailer is equipped with one of three types of main brake:
• double conduit pneumatic braking system with manual braking force regulator,
figure (3.6),
• double conduit pneumatic braking system with automatic braking force regulator
(optional equipment), figure (3.7),
• hydraulic braking system (optional equipment), figure (3.8).
In standard configuration, the trailer is equipped with double conduit pneumatic system with
manual braking force regulator.
The main pneumatic brake is activated from the tractor driver's cab by depressing the brake
pedal. The function of the control valve (2) - figure (3.6) and (3.7) is to activate the trailer's
brakes simultaneously with the tractor's brakes. Furthermore, in case of an inadvertent
disconnection of the conduit between the trailer and the tractor, the control valve will
automatically activate trailer's brakes. Valve used in the system is equipped with a circuit
causing the brakes to be applied when trailer is disconnected from the tractor. When
compressed air line is connected to the tractor, the device automatically applying the brakes
now changes its position to allow normal brake operation.
The main hydraulic brake (available as optional equipment) is activated from the tractor
driver's cab by depressing the brake pedal. Agricultural tractor equipped with suitable
hydraulic system is required to operate the hydraulic braking system.
3.9
Pronar T286