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DRIVING<br />
P11NE231<br />
TRAILER HYDRAULIC BRAKES<br />
Connect the trailer or semi-trailer hydraulic brakes with the quick coupler marked with<br />
an arrow.<br />
The control of the trailer (semi-trailer) hydraulic brakes and the control of the tractor<br />
brakes ensure synchronized braking effect of both the vehicles. Working pressure is<br />
enforced by oil supplied from the hydraulic gear-type pump that works permanently.<br />
The trailer brake control valve is controlled by brake fluid pressure from the main<br />
brake cylinders depending on force that influences the brake pedal. Upon maximum<br />
pressing down the brake pedal, pressure on the coupling head should be 12 - 15<br />
MPa. The trailer brake valve prefers the brake function to the hydraulic function.<br />
In the event of shocks when you press down the brake pedal, you have to bleed the<br />
hose from the brake valve to the quick coupling.<br />
When driving with trailer, the brake pedals should be connected and safeguarded<br />
with a lock!<br />
When braking with one brake pedal, the trailer hydraulic brakes are out<br />
of operation.<br />
CONNECTION AND DISCONNECTION<br />
OF QUICK COUPLINGS OF THE<br />
TRAILER HYDRAULIC BRAKES<br />
When connecting and disconnecting<br />
the quick couplings you<br />
should be aware of the rest of oil<br />
that is kept in the quick coupling<br />
plug or socket.<br />
To protect environment you have<br />
to remove the oil residues after<br />
each disconnection of the quick<br />
couplings with a textile rag.<br />
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