Checking check valve

AR43.10-P-0023V

2.12.14

MODEL

171, 172, 217, 222, 231

Shown on model 171

P43.10-2033-06

	Check
1	Eliminate vacuum in BAS brake booster (A7/7)	 To do this, press the brake pedal several times with the engine switched off.
2	Open engine hood and raise to vertical position	MODEL 171, 172, 217, 222, 231
		MODEL 171, 172	AR88.40-P-1000V
3	Connect vacuum tester (030) with test connection (031) to BAS brake booster (A7/7)		AR43.10-P-0024-01V
		 Vacuum tester	*201589132100
		 Test connection	*168589086300
4	Start the engine and produce a vacuum of 0.75 to 0.8 bar by pressing and suddenly releasing the accelerator pedal	 Reduce vacuum >0.8 bar by depressing the brake pedal.
5	Check the check valve (17)	 For this, switch off engine. The vacuum must not reduce by more than 0.2 bar within 30 seconds.
		With vacuum loss > 0.2 bar
		
		Replace vacuum line (8) with check valve (17).
		MODEL 217 with ENGINE 157, 278	AR43.10-P-0355LC
		MODEL 222.057/157 with ENGINE 276.9	AR43.10-P-0355LFH
		MODEL 222 with ENGINE 642	AR43.10-P-0355LFD
		MODEL 222 with ENGINE 278	AR43.10-P-0355LFB
		MODEL 222 with ENGINE 276.8	AR43.10-P-0355LF
		MODEL 171 with ENGINE 271	AR43.10-P-0355V
		MODEL 171 with ENGINE 113, 272	AR43.10-P-0355VA
		MODEL 172	AR43.10-P-0355W
		MODEL 231	AR43.10-P-0355RK
		If necessary:
		
		Checking brake booster
			AR43.10-P-0325V
6	Detach vacuum tester (030) with test connection (031) from BAS brake booster (A77)

201 589 13 21 00

Vacuum tester

168 589 08 63 00

Test connection