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

MODEL 166 with ENGINE 157, 276, 278 

MODEL 251 with ENGINE 276 

MODEL 292 with ENGINE 157, 276, 278 

Shown on engine 276.9 

	Remove/install
1.1	Remove front engine cover (2) and engine air intake duct (1)	Model 166, 251 with engine 276.9
1.2	Remove engine cover and right engine air intake duct upstream of air filter housing	Model 166, 251, 292 with engine 276.8	AR09.10-P-1150GQC
2	Remove right charge air pipe	Model 166, 251, 292 with engine 276.8	AR09.41-P-8620GQC
3	Remove poly-V belt (3)	Model 166, 292 with engine 276.8	AR13.22-P-1202GQC
		Model 166 with engine 157, 278	AR13.22-P-1202MLJ
		Model 292 with engine 157, 278 Engine 276.9 in model 166	AR13.20-P-0001GQ
		Engine 276 in model 251	AR13.20-P-0001RTZ
4	Detach belt pulley (4).	Counterhold alternator shaft using a serrated socket or Torx socket and socket wrench. The belt pulley (4) must always be replaced after a mileage of more than 100.000 km during repair of the alternator (G2).	*BA15.40-P-1004-01F
		Collar nut, connecting belt pulley to alternator Socket wrench	Fig 1
5	Install in the reverse order

Fig 1: Identifying Socket Wrench (602 589 00 10 00)

Courtesy of MERCEDES-BENZ USA