Check And Adjustment Of Pneumatic System Brake Valves Actuators; Check And Adjustment Of Pneumatic System Single-Wire Brake Valve - Belarus 3522.5 Operator's Manual

In the pneumatic drive are installed the connecting heads 1, 15, 16 of valve type. The
valves of connecting heads prevent air outlet, if pneumatic drive is used without trailer (for
example, tire charging) and at emergency trailer disconnection. At connection of the trailer
brake lines with tractor lines the valves of connecting heads open, providing passage of the
compressed air from tractor pneumatic drive to the trailer. In this case it is necessary to con-
nect pneumatic lines, if there is no pressure in the tanks 8 of the tractor.
Air pressure in the tanks 8 is controlled by the air pressure indicator and by emer-
gency air pressure red alarm lamp on air pressure sensor 10 and on emergency air pressure
sensor 3, respectively.
The system is provided with condensate drain valves 7 for drain of condensate from
the tanks 8, this valves are located in the bottom part of the tanks. The condensate is
drained thanks to sideways and up deviation of pusher.
The air is bleed from pneumatic drive (for tire charging, etc) through air bleed valves
5. One air bleeding valve is situated on pressure regulator, the second air bleeding valve is
situated on one of the tanks.
ATTENTION: BEFORE CONNECT OR DISCONNECT TRACTOR AND TRAILER
PNEUMATIC LINES, ENGAGE PARKING BRAKE! IT IS NECESSARY TO CONNECT
TRACTOR AND TRAILER PNEUMATIC LINES WHEN THERE IS NO PRESSURE IN
PNEUMATIC SYSTEM OF THE TRACTOR!

3.10.2 Check and Adjustment of Pneumatic System Brake Valves Actuators

3.10.2.1 Check and adjustment of pneumatic system single-wire brake valve

1 – brake valve; 2 – pins; 3 – travel compensator; 4 – rod; 5 – nut; 6 – fork; 7 – lever.
Figure 3.10.2 – Check and adjustment of pneumatic system brake valves actuators
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