Remove/install engine with front axle carrier - AR01.10-P-2500EW

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ENGINES 272, 273 in MODEL 212

Vehicle with 4MATIC

Shown on engine 272

Fig 1: Engine With Front Axle Carrier Remove/Install Components - Shown On Engine 272 (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Engine With Front Axle Carrier Remove/Install Components - Shown On Engine 272 (2 Of 2)

Courtesy of MERCEDES-BENZ USA

Illustrated on model 204

Fig 3: Engine With Front Axle Carrier Remove/Install Components - Shown On Model 204

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

25.10.11

Value modified: Bolt, rear engine support to frame floor assembly

*BA22.10-P-1005-03E

	Remove/install
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Only tighten nuts and bolts of chassis components when vehicle is in a ready-to-drive condition.
1	Deactivate easy entry/exit function	Vehicles with code (275) memory package (driver seat, steering column, mirrors).
2	Move front wheels to straight-ahead position and secure steering wheel.	The steering wheel must not be turned when the steering coupling is detached, otherwise the clock spring contact will be destroyed.
2			Figure
3	Secure vehicle on vehicle lift		AR00.60-P-0100EWS
4	Remove air filter housing		AR09.10-P-1150EWS
5	Suction refrigerant out of air conditioning		AR83.30-P-1760CW
6	Detach ground line from battery		AR54.10-P-0003EW
	Notes on battery		AH54.10-P-0001-01A
7	Pinch off engine wiring harness	The following electrical connectors should be disconnected: Ground line on ground point at the front left Prefuses Electrical connector for engine wiring harness and engine control unit Electronic transmission control connector Electrical connectors for oxygen sensor on the left and right upstream and downstream of the catalytic converter Ground line from transmission Electrical connector for speed-sensitive power steering solenoid valve	AR01.10-P-2400-11EW
8	Remove purge line (4) from crankcase ventilation vacuum line (5)
9	Remove brake booster vacuum line (6) from resonance intake manifold
10	Empty power steering expansion reservoir		Fig 5
11	Open hose clamps (2) and detach hoses (3a) from return lines (3b)	Plug openings.
11			Figure
12	Detach refrigerant line at separation point (20)
13	Detach the lower radiator grille in the area of the refrigerant line (16)
14	Unscrew bolt and remove refrigerant line (16) from condenser	Plug openings.
14			Figure
15	Drain coolant at radiator		AR20.00-P-1142EWS
	Notes on coolant		AH20.00-N-2080-01A
16	Detach oil cooler lines from the automatic transmission at the automatic transmission oil cooler		AR27.10-P-0501-03CW
16			Figure
17	Disconnect refrigerant line (33) from thermostat housing	Engine 272
17	Disconnect refrigerant line (33) from thermostat housing	See "Disconnect Henn coupling".	AR09.41-P-1311-01AL
18	Detach coolant line (32b) from coolant pump (34)	See "Disconnect Henn coupling".	AR09.41-P-1311-01AL
19	Remove coolant line (32c) from heating system shutoff valve	See "Disconnect Henn coupling".	AR09.41-P-1311-01AL
20	Remove catalytic converter or front exhaust system		AR49.10-P-7100EW
21	Disconnect steering coupling		AR46.10-P-8000EW
22	Detach propeller shaft (22) from the automatic transmission	Mark propeller shaft position with respect to the output flange so that, at the time of reinstallation, the factory installation position can be reproduced; otherwise, vibrations in the drive line may occur.	AR41.10-P-0050EW
23	Remove bracket (24)
24	Remove front wheels
	Remove/install wheels		AP40.10-P-4050EW
25	Disconnect electrical connectors from rpm sensors and brake wear sensor at the front right on the front axle electrical distributor	Unclip electrical lines from brackets.	AR33.10-P-0100-06CW
26	Remove brake caliper from brake caliper supports and fasten with attached lines to suspension strut	ENGINE 272, 273 in MODEL 212 with CODE M005 (4MATIC) divided floating caliper brake	AR42.10-P-0070EWC
		ENGINE 272, 273 in MODEL 212 with CODE M005 (4MATIC) undivided 1-piston floating caliper brake	AR42.10-P-0070EWB
		ENGINE 272, 273 in MODEL 212 with CODE M005 (4MATIC) 4-piston fixed-caliper brake	AR42.10-P-0070EWA
27	Detach headlamp range adjustment sensor to strut rod
28	Detach link rods on torsion bar		*BA32.20-P-1001-02P
29	Detach suspension struts from steering knuckles	Vehicles without CODE (489) AIRMATIC (air suspension with continuous adjustment damping)	AR32.25-P-1017EW
29	Detach suspension struts from steering knuckles	Vehicle with code (489) AIRMATIC (air suspension with continuous adjustment damping)	AR32.25-P-1017EWA
	Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel and risk of injury to eyes and skin caused by contact with fuel	No fire, sparks, open flames or smoking. Pour fuels only into suitable and appropriately marked containers. Wear protective clothing when handling fuel.	AS47.00-Z-0001-01A
30	Relieve fuel pressure		AR07.03-P-1460-01VA
		Engine 272	*BA07.03-P-1004-01B
			Figure
31	Remove fuel feed line (8) from fuel distributor rail (9)		*BA07.03-P-1001-01B
31	Remove fuel feed line (8) from fuel distributor rail (9)		Figure
32	Detach rubber seal and cold air intake from radiator crossmember
33	Fasten radiator to radiator crossmember with cable ties
34	Detach support struts and mounting plates from front axle carrier		*BA33.10-P-1002-01M
34			*BA33.10-P-1003-01M
35	Support front axle carrier using the lifting platform
36	Remove bolts (23a) of rear engine crossmember (23)		*BA22.10-P-1005-03E
	Notes on bolted connections with self tapping screws		AH00.00-P-0007-01SF
37	Remove front axle carrier bolts from longitudinal member		AR33.10-P-0001EW
38	Lower engine-transmission unit with front axle carrier
39	Install in the reverse order
40	Fill power steering pump and bleed		AR46.30-P-0010EW
41	Perform a wheel alignment check		AR40.20-P-0200EW
42	Read out fault memory using STAR DIAGNOSIS and erase if necessary
	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
43	Carry out engine test run and check engine for proper operation and leaks		AS00.00-Z-0005-01A

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

ENGINE MOUNT, ENGINE SUPPORT (ENGINE SIDE)

Number	Designation		Model 212 except 4-MATIC	Model 212 4-MATIC
BA22.10-P-1005-03E	Bolt, rear engine support to frame floor assembly	Nm	70	70

FRONT AXLE CARRIER

Number	Designation			Model 212
BA33.10-P-1002-01M	Fixing of support (strut)		Nm	110
BA33.10-P-1003-01M	Mounting plate, front axle carrier to front area	M10	Nm	55
BA33.10-P-1003-01M	Mounting plate, front axle carrier to front area	M12	Nm	110

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	-

FRONT AXLE STABILIZER BAR

Number	Designation		Type 212
BA32.20-P-1001-02P	Nut, link rod to stabilizer bar	Nm	98

Fig 4: Identifying Holding Device (129 589 01 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Hand Pump (210 589 00 71 00)

Courtesy of MERCEDES-BENZ USA

Fig 6: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 7: Identifying Pressure Hose (119 589 04 63 00)

Courtesy of MERCEDES-BENZ USA