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Remove/install alternator belt pulley - AR15.40-P-5710GZB

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ENGINES 642 in MODEL 164 

Fig 1: Identifying Alternator Belt Pulley Components
G06878130Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Remove/install     
DANGER Risk of injury  caused by fingers being pinched or crushed  when removing, installing or aligning hoods, doors, trunk lids, lift gates or sliding roof Keep body parts and limbs well clear of moving parts. AS00.00-Z-0011-01A
1 Removes strut tower brace Model 164.8 only
IMPORTANT Remove strut tower brace from strut tower mounts.
AR62.30-P-2500GY
2 Remove engine trim panel Model 164 AR01.10-P-2405GZB
    Model 251 AR01.10-P-2405RTB
3 Remove right engine intake air duct    
4 Remove charge air hose downstream of the charge air cooler IMPORTANT Charge air hose on the right. AR09.41-P-8625GZB
5 Partly remove poly - V belt IMPORTANT Remove poly V-belt only from belt pulley (3) on alternator (G2). AR13.20-P-0001GZB
6 Pry off cap (1) from belt pulley (3) using a suitable screwdriver NOTES Do not damage cap (1) otherwise it will have to be replaced.  
7 Remove belt pulley (3) from alternator shaft using a socket wrench (2) IMPORTANT For this purpose counterhold generator shaft with splined or Torx socket.
IMPORTANTInstallation:  During repairs to alternator (G2), belt pulley (3) must always be replaced for a mileage of more than 100.000 km.
 
    TORQUE SPECIFICATION *BA15.40-P-1004-01D 
    SPECIAL TOOL Fig 2
    SPECIAL TOOL Fig 3
8 Install in the reverse order    
DANGER Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.
AS00.00-Z-0005-01A
9 Carry out engine test run    
ALTERNATOR

Number Designation Engine 642
BA15.40-P-1004-01D Collar nut on poly - V belt pulley Nm 80
Fig 2: Identifying Socket Wrench (602 589 00 10 00)
G06878131Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 3: Identifying Screwdriver Bit (601 589 00 10 00)
G06878132Courtesy of MERCEDES-BENZ OF NORTH AMERICA.