Remove/Install Alternator - AR15.40-P-5032LWA

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

Engine 274.9 in model 253 (except 253.954) 

Shown on Engine 274.9 in model 205.042 

Fig 1: Alternator Components Location - Engine 274.9 In Model 253 (Except 253.954) (Shown In Model 205.042)

Courtesy of MERCEDES-BENZ USA

Shown on Engine 274.9 in model 205.048/049/348 with code 494 (USA version) and code 805 (model year 2015) 

Courtesy of MERCEDES-BENZ USA

	Risk of injury.  Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Disconnect ground line of battery		AR54.10-P-0003LW
2	Remove upper Engine cover
3	Remove Engine air intake duct upstream of air filter
4	Remove fan unit	Engine 274.9 in model 205 (except 205.047/048/049/147/148/247/248/348/349/448/449)
			AR20.40-P-5050LWB
5	Attach radiator guard plate	Engine 274.9 in model 205 (except 205.047/048/049/147/148/247/248/348/349/448/449)
			WF58.50-P-0110-01A
6	Remove poly-V belt	Engine 274.9 in model 205 (except 205.047/147/247) Engine 274.9 in model 253 (except 253.354/954)	AR13.20-P-0001MRA
7	Remove guide pulley for poly-V belt	Engine 274.9 in model 205.048/049/148/248/348/349/448/449 Engine 274.9 in model 253.349/948/949
		Bolt, guide pulley to alternator	*BA13.25-P-1004-01Z
	Risk of injury  to skin and eyes due to handling of Engine oil. Risk of poisoning  caused by swallowing Engine oil	Wear protective gloves, protective clothing and safety glasses. Do not fill Engine oil into beverage containers.	AS18.00-Z-0001-01A
8	Remove oil lines (5) from timing case and seal connections with suitable stop plugs	Engine 274.9 in model 205.048/049/348 with code 494 (US version) with code 805 (Model year 2015)
	Notes on avoiding damage through contamination and foreign objects	: Replace seals.	AH00.00-P-5000-01A
		Screw/bolt, oil line to timing case/connecting flange	*BA18.30-P-1002-01L
		Record plug	Fig 2
9	Remove center and rear lower Engine compartment paneling		AR61.20-P-1105LW
10	Release and disconnect electrical connection (3)
11	Remove contact protection of nut (1)
12	Remove electrical line B+ (4) from alternator (G2)	Nut, circuit B+ to alternator	*BA15.40-P-1002-01F
13	Remove screw/bolts (2) and pull alternator (G2) upwards and out	Alternator tightening procedure	AR15.40-P-5032-03MR
		Bolt, alternator to timing case	*BA15.40-P-1001-01F
14	Install in the reverse order

Fig 2: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA