Checking pressure governor · ar4260l0010a · Mercedes-Benz WIS

AR42.60-L-0010A

Checking pressure governor

6.7.09

MODEL 668, 670 with CODE (B16) Hydraulic 2-circuit / compressed air 2-circuit brakes

MODEL 668, 670
with CODE (B16) Hydraulic 2-circuit / compressed air 2-circuit brakes
with CODE (B43) 2-line trailer brake (EC)

MODEL 668, 670
with CODE (B16) Hydraulic 2-circuit / compressed air 2-circuit brakes
with CODE (B43) 2-line trailer brake (EC)
with CODE (CE2) Rear air suspension
with CODE (CE3) Front and rear air suspension

L42.60-0056-01

4.03 Four-circuit protection valve

6.13 Compressed air drier with integrated pressure regulator

L42.60-0059-01

L42.60-0057-01

H1 Test connection (circuit 1)

H2 Test connection (circuit 2)

H3 Test connection (air suspension system)

L42.60-0058-01

Modification notes

12.3.01

Value changed from 10 (+0.2) bar to 10 (0.2) bar

Value in BE42.10-N-1001-10C changed for models 668, 670 with code B16 steel suspension
solo vehicle

*BE42.10-N-1001-10C

	Checking
	Notes on pressure vessel for ancillary consumers		AH42.60-N-0010-01A
	Notes on four-circuit protection valve		AH42.60-N-0001-01A
1.1	Connect test kit to test connection (circuit 1) (H1)	Except front and rear air suspension, code CE3 Except rear air suspension CE2
		 Between four-circuit protection valve (4.03) and compressed-air reservoir of front axle.
			*360589002100
1.2	Connect test kit to test connection (air suspension system) (H3)	With front and rear air suspension, code CE3 With rear air suspension CE2
		 Between the compressed air reservoir and safety valve of air suspension system.
			*360589002100
2	Lower brake-air pressure	 Lower the reservoir pressure below the cut-in pressure of the compressed air drier with integral pressure regulator (6.13).
			*360589002100
3	Fill the brake system with compressed air until the compressed air drier with integral pressure regulator (6.13) cuts out	 The cutoff pressure must not exceed the specified value otherwise the safety valve in the supply reservoir may respond, preventing the pressure regulator from switching off properly.	*BE42.10-N-1001-10C
			*360589002100
		 If the measured cutoff pressure and specified pressure are different:
		Replace compressed air drier with integral pressure regulator (6.13).
4	Lower the reservoir pressure until the cut-in pressure of the compressed air drier with integral pressure regulator (6.13) is reached	 Check cut-in pressure and compare with specified value. If it varies from the specified value:	*BE42.10-N-1009-10C
		Replace compressed air drier with integral pressure regulator (6.13).
			*360589002100
5	Check switching span of compressed air drier with integral pressure regulator (6.13) between the cut-in pressure and cutoff pressure	 The cutoff pressure must not exceed the specified value otherwise the safety valve may respond and the compressed air drier with integral pressure regulator (6.13) does not switch off properly.	*BE42.10-N-1005-10C
			*360589002100
6	Check difference between cutoff and cut-in pressure	 If it varies from the specified value:	*BE42.10-N-1007-10C
		Replace compressed air drier with integral pressure regulator (6.13).
			*360589002100
7.1	Detach test kit from test connection (circuit 1) (H1)	Except front and rear air suspension, code CE3 Except rear air suspension CE2
		 Between four-circuit protection valve (4.03) and compressed-air reservoir of front axle.
			*360589002100
7.2	Detach test kit from test connection (air suspension system) (H3)	With front and rear air suspension, code CE3 With rear air suspension CE2
		 Between the compressed air reservoir and safety valve of air suspension system.
			*360589002100

Test and adjustment values for service brake

Number	Designation		Model 668, 670 with code B16 Steel suspension Solo and tractor vehicle as of VIN 134643	Model 668, 670 with code B16 and code B43 Steel suspension Towing vehicle up to VIN 123600	Model 668, 670 with code B16 and code B43 Steel suspension Towing vehicle as of VIN 123601 up to VIN 131964


BE42.10-N-1001-10C	Cut-off pressure	bar	12,3	8.5 (-0.4)	10,2
BE42.10-N-1005-10C	Pressure governor control range	bar	1.0 (+0.5)	0.6 (+0.4)	0.7 (+0.5)
BE42.10-N-1007-10C	Pressure regulator control range	bar	12.3 to 10.2	8.5 to 7.1	10.2 to 8.6
BE42.10-N-1009-10C	Cut-in pressure	bar	11.3 to 10.2	7.9 to 7.1	9.5 to 8.7

Test and adjustment values for service brake

Number	Designation		Model 668, 670 with code B16 Steel suspension Solo vehicle up to VIN 123600	Model 668, 670 with code B16 Steel suspension Solo vehicle as of VIN 123601 up to VIN 131964	Model 668, 670 with code B16 Steel suspension Solo and tractor vehicle as of VIN 131965 up to VIN 134642


BE42.10-N-1001-10C	Cut-off pressure	bar	10 (0.2)	10 (0.2)	12,3
BE42.10-N-1005-10C	Pressure governor control range	bar	0.7 (+0.5)	0.7 (+0.5)	1.0 (+0.5)
BE42.10-N-1007-10C	Pressure regulator control range	bar	10.2 to 8.6	10.2 to 8.6	12.3 to 10.2
BE42.10-N-1009-10C	Cut-in pressure	bar	9.5 to 8.6	9.5 to 8.6	11.3 to 10.2

360 589 00 21 00

Test kit

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