Remove/Install Front Engine Mount - AR22.10-P-4330LWD

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Engine 274.9 in model 253 with code M005 (Vehicles with 4MATIC/all-wheel drive)

Shown on right front engine mount (2)

Fig 1: Front Engine Mount Components Location - Engine 274.9 In Model 253 With Code M005 (Right Front Shown)

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
	Risk of injury caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Risk of injury . Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
	Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.	AS00.00-Z-0035-01A
	General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system		AH00.00-Z-0300-01A
	Notes on battery		AH54.10-P-0001-01A
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
	Remove/install
1	Deactivate memory package	Engine 274.9 in model 253 with code 275 (Memory Package (driver's seat, steering column and mirror)) with code M005 (Vehicles with 4MATIC/all-wheel drive)
2	Turn rack-and-pinion steering to central position (front wheels in straight ahead position) and secure steering wheel with the holding device	The steering wheel must not be turned when detaching steering coupling. Otherwise the clock spring contact will be destroyed.
		Retainer device	Fig 3
3	Perform disable for the high voltage on-board electrical system	Engine 274.9 in model 253.354/954 with code M005 (Vehicles with 4MATIC/all-wheel drive)
			AR54.10-P-1150LVH
4	Remove engine air intake duct upstream of air filter
5	Remove center and rear lower engine compartment paneling		AR61.20-P-1105LW
6	Release and disconnect high voltage of the electrical A/C compressor	Engine 274.9 in model 253.354/954 with code M005 (Vehicles with 4MATIC/all-wheel drive)
7	Unclip high-voltage line from charge air cooler bracket and place to one side	Engine 274.9 in model 253.354/954 with code M005 (Vehicles with 4MATIC/all-wheel drive)
8	Remove front axle drive shafts	Engine 274.9 in model 253 with transmission 724.2 with code M005 (Vehicles with 4MATIC/all-wheel drive) Engine 274.9 in model 253 with transmission 725.0 with code M005 (Vehicles with 4MATIC/all-wheel drive)	AR33.30-P-0620LW
9	Remove catalytic converter		AR49.10-P-5500LW
10	Unclip engine management control unit with bracket and place to one side with connected lines
11	Remove screw/bolts (1) from left and right engine mount (2)	Engine 274.9 in model 253.346/349/943/946/949 with code M005 (Vehicles with 4MATIC/all-wheel drive) Bolt, front engine mount to engine support	*BA22.10-P-1001-03M
12	Mount engine hoist and raise engine	Do not put electrical lines and hoses under tension. Otherwise damage will occur.	AR33.10-P-0105LW
13	Unfasten screw/bolts (7) and heat shield (6)	Bolt, heat shield to engine support	*BA22.10-P-1003-02A
14	Remove screw/bolt (5a) from the left and the front right engine mount (2)	Engine 274.9 in model 253.346/349/943/946/949 with code M005 (Vehicles with 4MATIC/all-wheel drive) Screw/bolt, front engine mount to front axle carrier	*BA22.10-P-1002-03M
		Engine mount wrench set	Fig 2
15	Detach steering coupling from steering shaft		AR46.10-P-8000LW
16	Remove screw/bolts (5) from left and right front engine mount (2) and remove both front engine mounts (2) downwards	Always replace front engine mounts (2) in pairs. Observe environmental protection regulations for disposal of the engine mount (2). Dispose of front engine mount (2) into mixed scrap.
		Engine 274.9 in model 253.346/349/943/946/949 with code M005 (Vehicles with 4MATIC/all-wheel drive) Screw/bolt, front engine mount to front axle carrier	*BA22.10-P-1002-03M
		Engine mount wrench set	Fig 2
17	Install in the reverse order