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Checking check valve - AR43.10-P-0023LW

MODEL 205 

Fig 1: Air-Water Duct, BAS Brake Booster And Strut
G10133519Courtesy of MERCEDES-BENZ USA
Fig 2: Checking Vacuum Line Using Vacuum Tester
G10133520Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Open engine hood and raise to vertical position    
2 Remove left and right wiper arms   AR82.30-P-6100LW
3 Remove air-water duct (1) below left wiper arm    
4 Remove strut (2) TORQUE SPECIFICATION Screw/bolt, strut to crossmember *BA62.30-P-1003-01H 
TORQUE SPECIFICATION Screw/bolt, strut to soundproofing *BA62.30-P-1004-01H 
INSPECT Check     
5 Eliminate vacuum in BAS brake booster (A7/7) IMPORTANT To do this, press the brake pedal several times with the engine switched off.  
6 Connect vacuum tester (030) with test connection (031) to BAS brake booster (A7/7)   AR43.10-P-0024-01V
SPECIAL TOOL Vacuum tester Fig 3
SPECIAL TOOL Test connection Fig 4
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
7 Start the engine and produce a vacuum of 0.75 to 0.8 bar by pressing and suddenly releasing the accelerator pedal IMPORTANT Reduce vacuum >0.8 bar by depressing the brake pedal.  
8 Check the check valve (17) IMPORTANT For this, switch off engine. The vacuum must not reduce by more than 0.2 bar within 30 seconds.
In the event of a vacuum loss >0.2 bar: ↓
Replace vacuum line (8) with check valve (17).
 
  AR43.10-P-0355LW 
If necessary: ↓
Check BAS brake booster (A7/7).
 
  AR43.10-P-0325LW 
9 Disconnect vacuum tester (030) with test connection (031) from BAS brake booster (A7/7)   AR43.10-P-0024-01V
10 Install in the reverse order    
CROSSMEMBER AND FRONT REINFORCEMENT

Number Designation MODEL 205
BA62.30-P-1003-01H Screw/bolt, strut to crossmember M8 Nm 20
CROSSMEMBER AND FRONT REINFORCEMENT

Number Designation MODEL 205
BA62.30-P-1004-01H Screw/bolt, strut to soundproofing M8 Nm 20
Fig 3: Identifying Vacuum Tester (201 589 13 21 00)
G10133521Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Test connection (168 589 08 63 00)
G10133522Courtesy of MERCEDES-BENZ USA