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

Engine 176 in model 463 

up to model year 2019 

Engine 177 in model 205 

Engine 178 in model 190 

Engine 279 in model 463 

Fig 1: Alternator Belt Pulley Components Location - Engine 176 In Model 463 Up To Model Year 2019

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove lower engine compartment paneling	Engine 176 in model 463.234 up to model year 2019 with code ZQ0 (G 500 4x42 )	AR61.20-P-1105GWX
		Engine 176 in model 463 as of model year 2016 up to model year 2019 except code ZQ0 (G 500 4x42 ) Engine 279 in model 463 as of model year 2016 up to model year 2019 except code ZQ0 (G 500 4x42 )	AR61.20-P-1105GW
		Engine 178 in model 190	AR61.20-P-1105RG
		Engine 177 in model 205	AR61.20-P-1105LW
2	Unclip lower coolant hose of the lower low-temperature circuit expansion reservoir at lower coolant hose of the radiator	Engine 176 in model 463 up to model year 2019
3	Remove poly-V belt from belt pulley (3) on alternator (2)	Engine 279 in model 463	AR13.22-P-1202MUD
		Engine 176 in model 463 up to model year 2019 Engine 177 in model 205 Engine 178 in model 190	AR13.22-P-0003MNA
4	Detach plastic cap (1)
5	Remove belt pulley (3)	: The belt pulley (3) must always be replaced after a mileage of more than 100.000 km during repair of the alternator (2). Counterhold alternator shaft (4) using a serrated socket or Torx socket and socket wrench.
		Engine 176 in model 463 up to model year 2019 Engine 177 in model 205	*BA15.40-P-1007-01T
	Engine 178 in model 190 Collar nut, connecting belt pulley to alternator		*BA15.40-P-1007-01T
		Engine 279 in model 463 Collar nut, connecting belt pulley to alternator	*BA15.40-P-1004-01R
		Socket wrench	Fig 2
6	Install in the reverse order

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

Courtesy of MERCEDES-BENZ USA