Remove/install engine with transmission - AR01.10-P-2401EW

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ENGINES 272, 273 in MODEL 212

Vehicles without 4-MATIC

Fig 1: Engine With Transmission Remove/Install Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Engine With Transmission Remove/Install Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of death caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	The ground line on the battery must always be detached before beginning work on the fuel system otherwise pressure will be lost in the fuel system through opening a vehicle door or the trunk lid	Engine 272.983
1	Set DIRECT SELECT gear selector switch to position "N" and release parking brake	Transmission 722.9
2	Detach ground line from battery		AR54.10-P-0003EW
	Notes on battery		AH54.10-P-0001-01A
3	Secure vehicle on vehicle lift		AR00.60-P-0100EWS
4	Open engine hood and raise to vertical position		AR88.40-P-1000EW
5	Remove air filter housing		AR09.10-P-1150EWS
6	Remove middle reinforcement at the front	Engine 273
6	Remove middle reinforcement at the front	See "Completely replace front end with reinforcement".	AR62.30-P-1570EW
7	Remove fan unit	Engine 273	AR20.40-P-5050EW
8	Attach guard plate for radiator/condenser	Engine 273
	Guard plate for radiator/condenser	Engine 273	WF58.50-P-0110-01A
9	Remove poly-V belt		AR13.20-P-0001EWS
10	Remove wiring harness from engine and transmission		AR01.10-P-2400-11EW
11	Drain coolant at radiator		AR20.00-P-1142EWS
	Notes on coolant		AH20.00-N-2080-01A
12	Drain engine oil
	Engine oil and filter change		AP18.00-P-0101EW
13	Remove A/C compressor (A9) from timing case cover and engine support	Attach refrigerant compressor (A9) at side in bottom of engine compartment with piping connected.	AR83.55-P-5300EW
14	Detach power steering pump (2) from timing case cover and major assembly carrier	Set power steering pump (2) with expansion reservoir and attached lines aside.
			*BA46.30-P-1001-01T
			*BA46.30-P-1002-01T
15	Unscrew nut (5) and remove hydraulic line (3) with bracket from ALT (G2)		*BA46.30-P-1006-01T
16	Detach EGR lines from CATs (4)	Engine 272.983	AR14.20-P-1020-01EWD
			*BA27.40-P-1008-01A
			*BA49.10-P-1041-01AE
17	Detach catalytic converters (4) from exhaust manifolds		*BA49.10-P-1001-01AE
18	Remove bracket (7) on transmission		*BA49.10-P-1023-01AE
18	Remove bracket (7) on transmission		*BA49.10-P-1024-01AE
19	Support transmission
20	Remove rear engine crossmember (6) and engine mount		AR22.10-P-1180CW
	Notes on bolted connections with self tapping screws		AH00.00-P-0007-01SF
21	Remove propeller shaft on transmission		AR41.10-P-0050EW
22	Install rear engine crossmember (6) without engine mount		AR22.10-P-1180CW
23	Lower transmission and have it placed on the rear engine crossmember (6)
24	Detach switching rod on transmission	Transmission 716.6	AR26.60-P-0600-02CW
24	Detach switching rod on transmission	Long-life grease	*BR00.45-Z-1001-06A
25	Remove bolts (20) from engine mount on front axle carrier		*BA22.10-P-1002-03E
26.1	Remove transmission oil cooling lines (10) at connecting points	Transmission 722.9	AR27.10-P-0501-03CW
		Seal connections with plugs.
		Set of stop plugs	Figure
26.2	Remove hydraulic line from clutch slave cylinder	Transmission 716.6	-
27	Detach coolant lines (11, 12) from cooler	See "Disconnect Henn coupling".	AR09.41-P-1311-01AL
28	Remove coolant line (13)	See "Disconnect Henn coupling".	AR09.41-P-1311-01AL
29	Detach coolant line (14) from heater cooler
30	Remove vacuum line of brake booster		AR43.10-P-0355EW
31	Disconnect vacuum line (19) from purge line (9) (arrow)
32	Remove air duct housing (18)		AR09.20-P-0080EW
33	Detach bolt (21) for left engine mount from engine support	Unscrew bolt (21) by 3 to 4 revolutions.
33	Detach bolt (21) for left engine mount from engine support		*BA22.10-P-1001-03E
34	Remove fuel pressure via service valve on fuel distributor rail		AR07.03-P-1460-01VA
		Engine 272	*BA07.03-P-1004-01B
		Pressure hose	Figure
35	Detach fuel line (16) from fuel distributor	Seal connections with plugs.
			*BA07.03-P-1001-01B
		Set of stop plugs	Figure
36	Lift out engine together with transmission	Pay attention when lifting out engine that no cables and lines are damaged and that engine does not lean against partition wall. Turn left engine mount in such a way that the guide pins (arrows) run parallel to the engine. Load regulator
37	Install in the reverse order
38	Check transmission oil level and correct if necessary	Transmission 722.9	AR27.00-P-0270W
	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
39	Carry out engine test run while checking engine for function and oil leaks		AS00.00-Z-0005-01A

ENGINE MOUNT, ENGINE SUPPORT (ENGINE SIDE)

Number	Designation				Model 212 except 4MATIC
BA22.10-P-1001-03E	Bolt connecting front engine mount to engine support	M10		Nm	50
		M12	Stage 1	Nm	85
		M12	Stage 2	∠°	90
BA22.10-P-1002-03E	Bolt, front engine mount to front axle carrier			Nm	28

EXHAUST SYSTEM

Number	Designation		Engine 156, 157, 271, 272, 273, 276, 278 in model 212
BA49.10-P-1001-01AE	Bolt, catalytic converter to exhaust manifold	Nm	20
BA49.10-P-1023-01AE	Bolt of exhaust bracket to transmission	Nm	20
BA49.10-P-1024-01AE	Bolt/nut, exhaust bracket to exhaust	Nm	20
BA49.10-P-1041-01AE	Bolt, exhaust gas recirculation line clamp to catalytic converter	Nm	9

INJECTORS, INJECTION VALVES, LINES

Number	Designation			Engine 272	Engine 273
BA07.03-P-1001-01B	Union nut, fuel line to fuel distributor		Nm	20	20
BA07.03-P-1004-01B	Protective cap on service valve	Plastic	Nm	2	-
BA07.03-P-1004-01B	Protective cap on service valve	Metal	Nm	15	-

POWER STEERING PUMP

Number	Designation			Model 212
BA46.30-P-1001-01T	Power steering pump on timing case/crankcase	Normal threads	Nm	20
BA46.30-P-1001-01T	Power steering pump on timing case/crankcase	Self-tapping threads	Nm	35
BA46.30-P-1002-01T	Bolt, power steering pump to major assembly carrier		Nm	20
BA46.30-P-1006-01T	Nut, high-pressure line to alternator bracket		Nm	8

HOUSING

Number	Designation			Transmission 722.9
BA27.40-P-1008-01A	Bolt, automatic transmission to engine	M10x40	Nm	38
		M10x90	Nm	38
		M12	Nm	-

Fig 3: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Pressure Hose (119 589 04 63 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1001-06A	Long-life grease	A 000 989 63 51 11