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

ENGINES 157, 272, 273, 276, 278 in MODEL 221

ENGINES 157, 273, 278 in MODEL 216

Shown on engine 273.961

Fig 1: Identifying Alternator Belt Pulley Remove/Install Components - Shown On Engine 273.961

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

27.2.12

Reference to the altered version of the poly-V belt, added

Operation step 3

BT13.20-P-1000-01SXH

	Remove/install
	Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
1	Open engine hood
2	Remove front engine cover (1) and engine air intake ducts (2)
3	Remove poly-V belt (3)	Engine 273, 272 with single-belt pulley	AR13.20-P-0001SX
		Engine 272 with twin belt drive	AR13.22-P-1202SXH
		Engine 276	AR13.20-P-0001MMA
		Engine 157, 278	AR13.20-P-0001MMB
	Version of the poly-V belt altered	Model 221.095/195	BT13.20-P-1000-01SXH
4	Detach belt pulley (4).	Counterhold the alternator shaft using a serrated socket or Torx socket and socket wrench. During repairs to the alternator, the belt pulley (4) must always be replaced for a mileage of more than 100.000 km.
			Fig 2
			*BA15.40-P-1004-01F
5	Install in the reverse order

ALTERNATOR

Number	Designation		Engine 272	Engine 273
BA15.40-P-1004-01F	Collar nut, connecting belt pulley to alternator	Nm	80	80

ALTERNATOR

Number	Designation		Engine 157	Engine 276	Engine 278
BA15.40-P-1004-01F	Collar nut, connecting belt pulley to alternator	Nm	75	75	75

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

Courtesy of MERCEDES-BENZ USA