Remove/Install Balance Shaft Housing - AR03.20-P-1105MFC

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2023 Mercedes-Benz CLA45 AMG, 2023 Mercedes-Benz CLA35 AMG, 2023 Mercedes-Benz CLA250, 2022 Mercedes-Benz CLA45 AMG, and 2022 Mercedes-Benz CLA35 AMG. However, it is still accessible from the selected car via links, so may be relevant.

Engine 260 in model 118, 177, 247

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 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
	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
Topical note	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Topical note	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
	Remove
1	Remove front section of fender liner in right front fender.		AR88.10-P-1301MFA
2	Turn engine at center bolt of crankshaft in direction of engine rotation to top dead center (ignition TDC) of cylinder 1.	The TDC marking on the belt pulley must be aligned with the positioning edge on the timing case cover.
3	Remove oil pan.		AR01.45-P-7500MFC
4	Remove screws (2s) and remove oil deflector (2).
5	Remove screws (3s) and cover (3).
6	Remove screws (1a, 1b, 1c, 1d) and remove balance shaft housing (1).	Replace screws (1a, 1b, 1c, 1d) and seals.
	Check
7	Check new sealing rings of screws (1a, 1c) for damage.	Sealing rings can be damaged if not properly packaged and may not be further used in this case. Engine damage can occur otherwise. If damage is identified. Install new sealing rings.
8	Check whether sealing rings lie correctly in groove at screw shank of screws (1a, 1c).	Sealing rings serve for the stabilization of screw shank of screws (1a, 1c) and should prevent a vibration fracture.
	Install
9	Install balance shaft housing (1) in assembly position at crankcase.	During installation of balance shaft housing (1), ensure that SPACECOAT coating is not damaged. Balance shaft housing (1) must otherwise be replaced. Aid of helper required.
10	Install balance shaft housing (1) at crankcase and slightly tighten new screws (1b, 1d) by hand.	Screws (1b, 1d) must be replaced each time they are released.
11	Slightly tighten new screws (1a, 1c) by hand.	Ensure that sealing rings do not slide out of groove at screw shank or are damaged during installation. Engine damage can occur otherwise. Screws (1a, 1c) must be replaced each time they are released.
12	Move balance shafts to basic position.		AR03.20-P-1105-02MFC
		Torsional backlash	*BE03.20-P-1001-05B
		Bolt, Lanchester balance housing to crankcase	*BA03.20-P-1001-03B
		Dial indicator holder	Fig 2
		Dial gauge	Fig 1
13	Install cover (3) at balance shaft housing (1).
14	Install oil deflector (2).	Bolt, oil baffle to crankcase	*BA18.10-P-1005-01S
15	Install oil pan.		AR01.45-P-7500MFC
16	Install front section of fender liner in right front fender.		AR88.10-P-1301MFA
	Check
17	Check engine oil level and correct if necessary.
		Vehicle must be horizontal and standing on its wheels. Measurement errors occur otherwise. Never pour in engine oil to above the maximum value. Engine damage will occur otherwise.	AP18.00-P-1812MFA
	Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
	Risk of burn injuries , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust.	Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.	AS49.00-Z-0001-01A
18	Perform engine test run; in this connection, check engine for proper operation and leak tightness.