GF42.25-W-3124D | Trailer control valve, component description | 25.10.06 |
MODEL 374.6, 375.4, 940, 942, 943, 944, 950.5 /6, 952.5 /6, 953.6, 954.5
with CODE (BB8) Brake control (BS) with ASR
with CODE (ZX2) EPB II
MODEL 970, 972, 974, 975, 976
with CODE (BB1) Brake control (BS)
with CODE (ZX2) EPB II
MODEL 970, 972, 974, 975, 976
with CODE (BB8) Brake control (BS) with ASR
with CODE (ZX2) EPB II
W42.25-1208-11
Location
Shown on model 970
18.07 Trailer control valve
Model 970, 972, 974, 975, 976
The trailer control valve (18.07) is located behind the rear axle in the left longitudinal frame member.
Model 374, 375, 940, 942, 943, 944
The trailer control valve (18.07) is mounted near the compressed air drier with integrated pressure regulator on the inner side of the left longitudinal frame member.
Model 950, 952, 953, 954
The trailer control valve (18.07) is mounted near the battery box on the outer side of the left longitudinal frame member.
Task
Supplies the trailer brake system with system pressure.
Actuates the service brake of the trailer when the service brake system and the parking brake system are operated.
Holds back the redundancy pressure when electropneumatic control is active.
Guarantees the EU breakaway protection function for trailers.
W42.25-1174-12
Design
18.07 Trailer control valve
35.02 Coupling head for supply
35.03 Coupling head for brake
AS Breakaway coupling
D Pressure sensor
FB Parking brake
PV Proportioning valve
RV Relay valve
Pneumatic connections:
3 Vent connection
11 Brake circuit 3 supply
21 Trailer brake supply
22 Brake pressure release (trailer brake)
42 Compressed air supply (redundant brake pressure)
43 Compressed air control (trailer parking brake)