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Remove/install vacuum pump - AR43.05-P-1320LWA

Model 205, 253 with engine 274 

MODIFICATION NOTES

20.4.15 Perform enable for high voltage on-board electrical system, added. Operation step 1  
Fig 1: Identifying Vacuum Pump Remove/Install Components
G10133518DANGERDANGERNOTESREMOVINGINSTALLINGINSTALLATION IMPORTANTIMPORTANTINSTALLATION IMPORTANTTORQUE SPECIFICATIONINSPECTDANGERCourtesy of MERCEDES-BENZ USA
DANGER Risk of injury.  Moving parts can pinch, crush or, in extreme cases even sever extremities. No parts of the body or limbs should be within the operating range of the mechanism when moving components. AS00.00-Z-0009-01A
DANGER Risk of injury.  Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
NOTES Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Perform disable for high-voltage on-board electrical system Model 205.047/147/247 with engine 274 AR54.10-P-1150LW
2 Remove upper engine cover INSTALLATION IMPORTANT Install after leak check.  
3 Remove engine air intake duct upstream of air filter    
4 Unfasten rear engine mount from cross member, lift up and prop up transmission   AR22.10-P-1180LWB
IMPORTANT To support the rear engine mount it is possible, for example, to use a 50x50x50 mm hard wood block.  
5 Remove air filter housing   AR09.10-P-1150MRA
6 Detach vacuum hose (4) from vacuum pump (1)    
7 Release vacuum line and detach from vacuum pump (1)    
8 Unscrew screws/bolts (3) and remove vacuum pump (1) INSTALLATION IMPORTANT Clean sealing surfaces and replace seal (2). Observe position of vacuum pump (1) driver.  
TORQUE SPECIFICATION Bolt, vacuum pump to cylinder head/cylinder head cover *BA43.05-P-1001-01K 
9 Install in the reverse order    
INSPECT Check     
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
10 Test run engine and carry out leak check    
VACUUM PUMP

Number Designation Model 172, 204, 205, 207, 212, 218, 253 with engine 274
BA43.05-P-1001-01K Bolt, vacuum pump to cylinder head/cylinder head cover Nm 9