Replace rear crankshaft radial sealing ring - AR03.20-P-3063SXH

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ENGINE 272.974 in MODEL 221.095/195

Fig 1: Replacing Rear Crankshaft Radial Sealing Ring

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove integrated starter alternator		AR15.40-P-0003SXH
2	Push out crankshaft radial sealing ring (1) using a suitable tool from the mounting hole in the end cover (2)	Do not damage crankshaft (3) and mounting hole in the end cover (2). Use a clean rag as a base while pressing out; otherwise there can be leakage. Mount installation tool basic carrier on the crankshaft (3) and push in crankshaft radial sealing ring (1) using the installation tool at the same time.
2			Fig 2
	Checking
3	Check crankshaft radial sealing ring contact surface (1) on crankshaft (3)	If there are score marks and galling on the crankshaft (3) the position of the crankshaft radial sealing ring (1) must be altered for installation through use of part 3 from the installation tool.
4	Install in the reverse order
5	Check engine oil level; correct if necessary
	Engine oil change and filter change		AP18.00-P-0101SX
	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
6	Carry out an engine test run and check engine for leaks

Fig 2: Identifying Installation Tool (111 589 08 43 00)

Courtesy of MERCEDES-BENZ USA