Replace Rear Radial Shaft Sealing Ring - AR03.20-P-3003MNA

Engine 176 in model 463 

up to model year 2019 

Engine 177 in model 205 

Engine 178 in model 190 

Shown on ENGINE 177 

Fig 1: Rear Radial Shaft Sealing Ring Components Location - Engine 176 In Model 463 Up To Model Year 2019 (Shown On Engine 177)

Courtesy of MERCEDES-BENZ USA

	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
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Remove
1	Remove drive plate		AR03.30-P-8001MNA
2	Mark rear perforated disc relative to the crankcase	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205
3	Remove rear perforated plate	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205
4	Remove bolt (1)
5	Remove rear radial shaft sealing ring (2) with cover (3) from crankcase	The rear radial shaft sealing ring (2) and cover (3) form a unit and can only be replaced together.
	Install
6	Wet the sealing lip of the rear radial shaft sealing ring (2) with engine oil Specified engine oils (service) - Overview		BB00.40-P-0223-02A
7	Clean sealing surfaces of the new cover (3)	Loctite 7063 (400 ml) cleaning spray	*BR00.45-Z-1046-04A
8	Clean sealing surfaces of the oil pan and the crankcase		AR01.00-P-0050-01A
		Do not use any sharp-edged tools or abrasive paper. The sealing surface will be damaged otherwise. Loctite 7063 (400 ml) cleaning spray	*BR00.45-Z-1046-04A
9	Apply sealant to cover (3) Notes on distribution of sealant on crankcase end cover		AH01.40-P-1000-09MNA
		Sealant, Loctite 5970, 50 ml	*BR00.45-Z-1013-01A
10	Put rear radial shaft sealing ring (2) with lid (3) on crankcase and screw in screw/bolts (1) Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
	Notes on threaded connections with aluminum screws/bolts	The rear radial shaft sealing ring (2) and cover (3) form a unit and can only be replaced together.	AH00.00-P-0006-01RM
		Screw/bolt, rear of bottom half of crankcase to crankcase/oil pan	*BA01.40-P-1002-01ZA
		Insertion tool	Fig 2
11	Position rear perforated plate in such a way that the applied markings coincide during removal	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205
12	Install drive plate		AR03.30-P-8001MNA
13	Check engine oil level; correct if necessary	Engine 176 in model 463 up to model year 2019	AP18.00-P-0101GE
		Engine 177 in model 205 Engine 178 in model 190	AP18.00-P-1811MP
14	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. Carry out an engine test run and check engine for leak tightness	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

Fig 2: Identifying Insertion Tool (273 589 00 43 00)

Courtesy of MERCEDES-BENZ USA