GF42.60-W-2000B | Compressed air production, function | 8.4.09 |
MODEL 374, 375, 930, 932, 933, 940, 942, 943, 944, 950, 952, 953, 954, 957, 970, 972, 974, 975, 976
MODEL 934 except CODE (BC2) Electronic Air Processing Unit (EAPU)
W42.60-1150-06
Vehicles with constant pressure system, shown on single-cylinder compressor and single-chamber air drier with integrated pressure regulator
1.01 Single-cylinder compressor
4.05 4-circuit protection valve (with integral pressure limiter)
5.01 Single-chamber compressed air reservoir
6.12 Single-chamber air drier with integral pressure regulator
10.01 Off switch
12.09 Condensation sensor (B76)
30.01 Safety valve
38.02 Test connection M161.5
B71 Brake circuit 1 and 2 reservoir pressure sensor
NV Ancillary consumer distributor unit
V4 Separate compressed-air reservoir
V5 Constant pressure reservoir
V1 Supply, circuit 1 (rear axle)
V2 Supply, circuit 2 (front axle)
W42.60-1151-06
Vehicles with pressure control system, shown on single-cylinder compressor and single-chamber air drier with integrated pressure regulator
1.01 Single-cylinder compressor
4.07 4-circuit protection valve (with integrated pressure limitation for connections 23-28)
5.01 Single-chamber compressed-air reservoir
6.12 Single-chamber air drier with integral pressure regulator
10.01 Off switch
12.09 Condensation sensor (B76)
30.01 Safety valve
38.02 Test connection M161.5
B71 Brake circuit 1 and 2 reservoir pressure sensor
NV Ancillary consumer distributor unit
V4 Separate compressed-air reservoir
V1 Supply, circuit 1 (rear axle)
V2 Supply, circuit 2 (front axle)
The compressed air required is produced by the single-cylinder compressor (1.01) driven by the engine. Afterwards the compressed-air flows from the single-cylinder compressor (1.01) to the single-chamber air drier with integrated pressure regulator (6.12), in which the compressed-air is dried and the pressure in the brake system is limited to the set value by the integrated pressure regulator. If the pressure has reached the set value, the pressure regulator switches off and the air delivered by the single-cylinder compressor (1.01) escapes into the atmosphere. If the reservoir pressure in the brake system drops below a certain value, the pressure regulator switches on again and the single-cylinder compressor (1.01) fills the brake system up to the set value again.
Vehicles with constant pressure system
The compressed reaches the constant pressure reservoir from the single-chamber air drier with integrated pressure regulator (6.12) (V5).
(V5) A condensation sensor (12.09) for monitoring air dehumidification and a safety valve (30.01) to protect against excess pressure is installed on the constant pressure reservoir.
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As of 31.5.05 the safety valve (30.01) is only fitted on compressed-air reservoirs with a test pressure PS <15.5 bar.
Afterwards the compressed air reaches the 4-circuit protection valve (4.05).
In the 4-circuit protection valve (4.05) the compressed air is divided up into 4 circuits and the pressure for the supply circuit 1 (V1) and 2 (V2) is limited to 10 bar and for circuits 3 and 4 is limited to 8.5 bar.
The compressed air to the reservoirs flows through the outlets on the 4-circuit protection valve (4.05).
The brake circuit 1 and 2 reservoir pressure sensor (B71) is located on the 4-circuit protection valve (4.05).
The brake circuit 1 and 2 reservoir pressure sensor (B71) records the pressures in brake circuit 1 and 2 which are displayed in the instrument cluster (INS) (P2).
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Vehicles with pressure control system
The compressed air reaches the 4-circuit protection valve (4.07) from the single-chamber air drier with pressure regulator (6.12) .
In the 4-circuit protection valve (4.07) the compressed air is divided up into 4 circuits and the pressure for supply circuit 3 and 4 limited to 8.5 bar. The pressure for supply circuit 1 (V1) and 2 (V2) is not limited, the pressure corresponds to the shutoff pressure of the pressure regulator in the single-chamber air drier with integrated pressure regulator (6.12).
The compressed air to the reservoirs flows through the outlets on the 4-circuit protection valve (4.07).
The brake circuit 1 and 2 reservoir pressure sensor (B71) is located on the 4-circuit protection valve (4.07).
The brake circuit 1 and 2 reservoir pressure sensor (B71) records the pressures in brake circuit 1 and 2 which are displayed in the instrument (INS) (P2).
For monitoring air dehumidification a condensation sensor (12.09) and to protect against overpressure a safety valve (30.01) is installed on the single-chamber compressed-air reservoir (5.01) of brake circuit 2.
As of 31.5.05 the safety valve (30.01) is only fitted on compressed-air reservoirs with a test pressure PS <15.5 bar.
Brake system technical data | |||
Single-chamber air drier with pressure regulator, component description | |||
Dual-chamber air drier with pressure regulator, location / task / design | Only on model 930, 932, 933, 934, 940, 942, 943, 944, 950, 952, 953, 954, 957. | ||
Four-circuit protection valve, component description | |||
Condensation sensor, location/task/design | Condensation sensor without drain valve | ||
Condensation sensor, component description | Condensation sensor with drain valve | ||
Reservoir pressure sensor for brake circuit 1 and 2, location/task |