Checking Check Valve - AR43.10-P-0023S

Model 223 

except code 200 (Conditionally automated driving) 

except code 503 (Remote-controlled parking) 

except code ME10 (Hybrid vehicle (plug-in, PHEV)) 

Courtesy of MERCEDES-BENZ USA

	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
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Check
1	Release vacuum in brake booster (5).	To do this, press the brake pedal several times with the engine switched off.
2	Open engine hood and position upright.
3	Connect vacuum tester (4) with test connection (2) to brake booster (5).		AR43.10-P-0024-01V
		Tester	Fig 2
		Test connection	Fig 1
4	Start the engine and switch off once test pressure is reached.	Reduce excess pressure by depressing the brake pedal.
		Model 223 except code 200 (Conditionally automated driving) except code 503 (Remote-controlled parking) except code ME10 (Hybrid vehicle (plug-in, PHEV)) except code Z07 (B7 armoring on special protection version) Model 223 with code Z07 (B7 armoring on special protection version) except code 200 (Conditionally automated driving) except code 503 (Remote-controlled parking) except code ME10 (Hybrid vehicle (plug-in, PHEV)) Check valve/pressure in vacuum system of brake booster	*BE43.10-P-1006-01F
5	Check, check valve (1).	Check valve/pressure in vacuum system of brake booster If vacuum loss is unacceptable, ↓ replace vacuum line (3) with check valve (1). If complaint persists, ↓ check brake booster (5).	*BE43.10-P-1006-01F
			AR43.10-P-0325S
6	Disconnect vacuum tester (4) with test connection (2) from brake booster (5).		AR43.10-P-0024-01V
		Tester	Fig 2
		Test connection	Fig 1

Fig 1: Identifying Test Connection (168 589 08 63 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Tester (201 589 14 21 00)

Courtesy of MERCEDES-BENZ USA