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

Engine 274.9 in model 205 (except 205.047/147/247) 

Engine 274.9 in model 253 (except 253.354/954) 

Fig 1: Alternator Belt Pulley Components Location - Engine 274.9 In Model 253 (Except 253.354/954)

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove poly-V belt		AR13.20-P-0001MRA
2	Remove cap (4)	Only insert the cap (4) by hand. Otherwise the belt pulley (1) and generator shaft (2) will be damaged. Replace cap (4).
3	Hold alternator shaft (2) with a screwdriver bit and remove belt pulley (1) using the socket wrench (3)	Collar nut, connecting belt pulley to alternator	*BA15.40-P-1004-01F
		Socket wrench	Fig 2
		Screwdriver bit	Fig 3
4	Install in the reverse order

Fig 2: Identifying Socket Wrench (602 589 00 10 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Screwdriver Bit (601 589 00 10 00)

Courtesy of MERCEDES-BENZ USA