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 Component Location - Model 205 W/ 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
Notice	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 disk relative to 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 screws (1).
5	Remove rear radial shaft sealing ring (2) with cap (3) from crankcase.	The rear radial shaft sealing ring (2) and cap (3) form a unit and can only be replaced together.
	Install
6	Moisten sealing lip of rear radial shaft sealing ring (2) with engine oil.
	Specified engine oils for Cars, Vans (service) -Overview		BB00.40-P-0223-02A
7	Clean sealing surfaces of new cap (3).	Loctite 7063 (400 ml) cleaning spray	*BR00.45-Z-1046-04A
8	Clean sealing surfaces of oil pan and crankcase.	Do not use any sharp-edged tools or abrasive paper. The sealing surface will be damaged otherwise.	AR01.00-P-0050-01A
		Loctite 7063 (400 ml) cleaning spray	*BR00.45-Z-1046-04A
9	Apply sealant to cap (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	Position rear radial shaft sealing ring (2) with cap (3) on crankcase and tighten screws (1).
Notice	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
Notice	Notes on threaded connections with aluminum screws/bolts	The rear radial shaft sealing ring (2) and cap (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 disk in such a way that the markings applied during removal are aligned.	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 and correct if necessary.
		Engine 176 in model 463.234/239/255 up to model year 2019	AP18.00-P-0101GGE
		Engine 177 in model 205 Engine 178 in model 190	AP18.00-P-1811MP
	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
14	Carry out engine test run and check engine for leak tightness.

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

Courtesy of MERCEDES-BENZ USA