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Remove/Install Alternator Belt Pulley - AR15.40-P-5710SVZ

Engine 279 in model 223 

Shown with engine removed 

G16190360Courtesy of MERCEDES-BENZ USA
CAUTION Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.
AS00.00-Z-0017-01A
REMOVINGINSTALLING Remove/install     
1 Remove fan unit. INSTALLATION IMPORTANT : Install the engine cover only after the engine test run. AR20.40-P-5050SVZ
2 Remove poly-V-belt.   AR13.22-P-1202SVZ
3 Attach protective plate for cooler.    
REFER TO SHOP-MADE TOOLS     WF58.50-P-0110-01A
4 Remove cover (2).    
5 Counterhold alternator shaft (3) using a triple-square socket or Torx socket and a socket wrench. IMPORTANT Differs depending on the design.
SPECIAL TOOL Socket wrench
Fig 1
6 Remove nut (4) from alternator shaft (3). INSTALLATION IMPORTANT : Counterhold alternator shaft (3) using a triple-square socket or Torx socket and a socket wrench.
TORQUE SPECIFICATION Collar nut, connecting belt pulley to alternator
*BA15.40-P-1004-01R 
7 Remove belt pulley (1) from alternator shaft (3). INSTALLATION IMPORTANT : Belt pulley (1) must basically be replaced during alternator repair and/or after a kilometrage greater than 100, 000 km.  
8 Install in the reverse order.    
INSPECT Check     
WARNING Risk of burn injuries  , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning  caused by skin contact with solid components of the exhaust. Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area. AS49.00-Z-0001-01A
WARNING 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
9 Perform an engine test run and check the engine for proper function.    
ALTERNATOR

Number Designation Engine 279
BA15.40-P-1004-01R Collar nut, connecting belt pulley to alternator Nm 75
Fig 1: Identifying Socket Wrench (602 589 00 10 00)
G07712631Courtesy of MERCEDES-BENZ USA