Checking service pressures on four-circuit protection valve

AR42.60-W-0040A

Checking service pressures on four-circuit protection valve

20.11.15

Model

374, 375, 940, 942, 943, 944, 950, 952, 953, 954, 957, 958, 970, 972, 974, 975, 976

Shown on model 950

1

Test connection for circuit 1 (connection 21)

2

Test connection for circuit 3 (connection 23)

3

Test connection for reservoir pressure/tire filling connection

Shown on model 970

1

Test connection for circuit 1 (connection 21)

3

Test connection for reservoir pressure/tire filling connection

4

Test connection for circuit 4 (connection 28)

 Danger !

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A



Check

1

Connect test kit to test connection for circuit 1 (1)

 Test kit

*360589002100

2

Connect test kit to test connection for reservoir pressure/tire inflation connection (3)

 Test kit

*360589002100

3

Connect test kit to test connection for circuit 3 (2)

Only with model 374, 375.3/4, 940, 942, 943, 944, 950, 952, 953, 954, 957, 958.2/4

 Test kit

*360589002100

4

Connect test kit to test connection for circuit 4 (4)

Only with model 375.1, 958.0, 970, 972, 974, 975, 976

 Test kit

*360589002100

5.1

Lower operating pressure in circuit 3 to approx. 7.5 bar

Model 374, 375.3/4, 940, 942, 943, 944, 950, 952, 953, 954, 957, 958.2/4

5.2

Lower the operating pressure in circuit 4 to approx. 7.5 bar

Model 375.1, 958.0, 970, 972, 974, 975, 976

6

Start the engine and fill the compressed-air system until the pressure regulator cuts out

7

Switch off ignition

8

Check service pressures

Model 374, 940
except code BC3 (Pressure control system, 10 bar)
Model 374, 940
with code BC3 (Pressure control system, 10 bar)
Model 375.1/3/4
except code BC3 (Pressure control system, 10 bar)
Model 375.1/3/4
with code BC3 (Pressure control system, 10 bar)
Model 942, 943
Model 944, 950, 952, 953, 954, 957
Model 958.0/2/4
Model 970, 972, 974, 975, 976
except code BC3 (Pressure control system, 10 bar)
Model 970, 972, 974, 975, 976
with code BC3 (Pressure control system, 10 bar)Operating pressure of service brake circuits 1 and 2

*BE42.10-N-1003-10B

Model 374, 940
except code BC3 (Pressure control system, 10 bar)
Model 374, 940
with code BC3 (Pressure control system, 10 bar)
Model 375.1/3/4
except code BC3 (Pressure control system, 10 bar)
Model 375.1/3/4
with code BC3 (Pressure control system, 10 bar)
Model 942, 943
Model 944, 950, 952, 953, 954, 957
Model 958.0/2/4
Model 970, 972, 974, 975, 976
except code BC3 (Pressure control system, 10 bar)
Model 970, 972, 974, 975, 976
with code BC3 (Pressure control system, 10 bar)Operating pressure of auxiliary consumer circuits 3 and 4

*BE42.10-N-1004-10B

If specified values are not reached



Install new four-circuit protection valve with integrated pressure limiter.

9

Disconnect test kit

Test and adjustment values for service brake

Number

Designation

Model 374, 940 without code BC3

Model 374, 940 with code BC3

BE42.10-N-1003-10B

Operating pressure of service brake circuits 1 and 2

bar

9,4...10,4

9,3...10,4

Test and adjustment values for service brake

Number

Designation

Model 375.1/3/4 without CODE BC3

Model 375.1/3/4 with code BC3

BE42.10-N-1003-10B

Operating pressure of service brake circuits 1 and 2

bar

9,4...10,4

9,3...10,4

Test and adjustment values for service brake

Number

Designation

Model 930, 932, 933, 934, 944, 950, 952, 953, 954, 957

Model 942, 943

BE42.10-N-1003-10B

Operating pressure of service brake circuits 1 and 2

bar

9,4...10,4

9,3...10,4

Test and adjustment values for service brake

Number

Designation

Model 958.0/2/4

Model 970, 972, 974, 975, 976 without code BC3

BE42.10-N-1003-10B

Operating pressure of service brake circuits 1 and 2

bar

9,3...10,4

9,4...10,4

Test and adjustment values for service brake

Number

Designation

Model 970, 972, 974, 975, 976 with code BC3

BE42.10-N-1003-10B

Operating pressure of service brake circuits 1 and 2

bar

9,3...10,4

Test and adjustment values for service brake

Number

Designation

Model 374, 940 without code BC3

Model 374, 940 with code BC3

BE42.10-N-1004-10B

Operating pressure of auxiliary consumer circuits 3 and 4

bar

7,7...8,5

7,8...8,5

Test and adjustment values for service brake

Number

Designation

Model 375.1/3/4 without CODE BC3

Model 375.1/3/4 with code BC3

BE42.10-N-1004-10B

Operating pressure of auxiliary consumer circuits 3 and 4

bar

7,7...8,5

7,8...8,5

Test and adjustment values for service brake

Number

Designation

Model 930, 932, 933, 934, 944, 950, 952, 953, 954, 957

Model 942, 943

BE42.10-N-1004-10B

Operating pressure of auxiliary consumer circuits 3 and 4

bar

7,7...8,5

7,8...8,5

Test and adjustment values for service brake

Number

Designation

Model 958.0/2/4

Model 970, 972, 974, 975, 976 without code BC3

BE42.10-N-1004-10B

Operating pressure of auxiliary consumer circuits 3 and 4

bar

7,8...8,5

7,7...8,5

Test and adjustment values for service brake

Number

Designation

Model 970, 972, 974, 975, 976 with code BC3

BE42.10-N-1004-10B

Operating pressure of auxiliary consumer circuits 3 and 4

bar

7,8...8,5