USER MANUAL Tractor semitrailers PTL
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Figure 2. The general electric diagram of the semi-trailer PTL. 1 – electrical switch socket to the tractor; 2 – electrical switch to
the semi-trailer; 3 – rear right light; 4 – rear left light; 5 – turn signal lamp; 6 – fender lamp; 7 – brake lamp; 8 – licence plate lamp; 9 –
position lamp.
Figure 3. The layout diagram of the lights of the semi-trailer PTL. 1 – connecting socket; 2 – wires; 3 – white front reflector; 4 –
yellow side reflector; 5 – position lights; 6 – red rear reflector; 7 – rear right light; 8 – rear left light; 9 – licence plate light.
4.9.
Brake system
The tractor semi-trailer may be equipped with a pneumatic or, at the customer's request, hydraulic
working brake system.
Figure 4. The diagram of the hydraulic brake system of the semi-trailer. 1 – hydraulic coupling head; 2 – hose; 3 – wheel brake
hydraulic cylinder.
