Remove/install alternator - AR15.40-P-5032GQ

ENGINE 276 in MODEL 166, 251 

Shown on engine 276.9 

Fig 1: Identifying Alternator Remove/Install Components - Shown On Engine 276.9

Courtesy of MERCEDES-BENZ USA

Shown on engine 276.8 

Fig 2: Identifying Alternator Remove/Install Components - Shown On Engine 276.8

Courtesy of MERCEDES-BENZ USA

	Risk of injury  to skin and eyes suffering scalding from contact with hot coolant spray. Risk of poisoning  from swallowing coolant.	Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
	Risk of injury  to skin or eyes from hydraulic fluid spraying out under pressure. Risk of poisoning  from swallowing hydraulic fluid.	Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses.	AS00.00-Z-0013-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Remove/install
1	Detach ground line from battery	MODEL 166	AR54.10-P-0003GZ
	Notes on battery		AH54.10-P-0001-01A
		MODEL 251	AR54.10-P-0003RT
2	Drain coolant at radiator	ENGINE 276.8 in MODEL 251
	Notes on coolant		AH20.00-N-2080-01A
			AR20.00-P-1142GZC
3.1	Remove front engine cover (1)	ENGINE 276.9 in MODEL 166, 251
3.2	Remove engine cover	ENGINE 276.8 in MODEL 166, 251
4.1	Remove engine air intake duct upstream of air filter housing (2) and air filter housing (3)	ENGINE 276.9 in MODEL 166, 251
		Bolt, air filter to cylinder head cover	*BA09.10-P-1001-01M
		Bolt, air filter to air intake pipe support brace	*BA09.10-P-1002-01M
4.2	Remove engine air intake duct on the right and left upstream of air filter housing	ENGINE 276.8 in MODEL 166, 251
			AR09.10-P-1150GQC
5	Remove poly-V belt (4)	MODEL 166 with ENGINE 276.9	AR13.20-P-0001GQ
		MODEL 166 with ENGINE 276.8	AR13.20-P-0001GQC
		MODEL 251 with ENGINE 276	AR13.20-P-0001RTZ
6	Remove right charge air pipe	ENGINE 276.8 in MODEL 166, 251
			AR09.41-P-8620GQC
7	Detach cap from battery clamp B+ and unscrew nut	Nut, circuit B+ to alternator	*BA15.40-P-1002-01F
8.1	Open electrical line holder on alternator (G2) and remove electrical line on alternator (G2)	ENGINE 276.9 in MODEL 166, 251
8.2	Unfasten Active Roll Stabilization expansion reservoir.	ENGINE 276.8 in MODEL 166 with CODE 468 (ACTIVE CURVE SYSTEM)
9	Unfasten boost pressure control pressure transducer (Y31/5) with attached lines and place to one side	ENGINE 276.8 in MODEL 166, 251
			AR07.17-P-7002GQC
10	Disconnect coolant hose (8) from coolant hose connection (10)	ENGINE 276.8 in MODEL 251
			AR09.41-P-1311-01AL
11	Remove screw/bolt (9) from coolant hose connection (10)	ENGINE 276.8 in MODEL 251
12	Remove screw/bolts (5) for alternator (G2)	Bolt, alternator to timing case	*BA15.40-P-1001-01F
13	Remove ground lines (11)	ENGINE 276.8 in MODEL 166, 251 The ground line (11) is fastened with the screw/bolts (5) of the alternator (G2).
14	Remove charge air pipe bracket (12)	ENGINE 276.8 in MODEL 166, 251 The charge air pipe bracket (12) is fastened with the screw/bolt (5) of alternator (G2).
15	Set alternator (G2) aside
16	Detach electrical connection (6) on alternator (G2)
17	Take alternator (G2) upwards and out
18	Install in the reverse order