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

Engine 256.9 in model 213, 238, 257, 290 

Courtesy of MERCEDES-BENZ USA

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
Topical note	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Remove
1	Remove the integrated starter alternator.		AR15.40-P-0003MSA
2	Clean timing case cover (2) in the area of the radial shaft sealing ring (1).	Assembly cleaner	*BR00.45-Z-1028-04A
3	Pry out the radial shaft sealing ring (1) using a suitable tool.	Do not damage crankshaft and timing case cover (2). Leaks can occur otherwise.
	Check
4	Check sealing surface of the radial shaft sealing ring (1) in the timing case cover (2) for ridging and damage.	If ridging or damage is present, ↓ replace timing case cover (2).
			AR01.40-P-8000MSA
	Clean
5	Clean sealing surface in the timing case cover (2) and on the crankshaft.	The radial shaft sealing ring (1) and contact surface on the crankshaft must be grease-free Leaks can occur otherwise.
		Assembly cleaner	*BR00.45-Z-1028-04A
	Install
6	Slide the radial shaft sealing ring (1) in the direction of the arrow onto the insertion device (3a).	Insertion tool	Fig 2
7	Attach the insertion device (3a) to the crankshaft and secure using two bolts.	Insertion tool	Fig 2
8	Slide the insertion device (4) onto the insertion device (3), place on the insertion device (3a) and tighten the nut slightly by hand.	Align bores in insertion device (3) with screws in insertion device (3a).
		Insertion tool	Fig 2
		Insertion device	Fig 1
9	Install the radial shaft sealing ring (1) until the insertion device (3) lies on the timing case cover (2).	Radial shaft sealing ring (1) must be flush with timing case cover (2). Leaks can occur otherwise. Ensure that the radial shaft sealing ring (1) is positioned uniformly around its entire circumference.
		Insertion tool	Fig 2
10	Remove the insertion devices (3, 3a, 4).	Insertion device	Fig 1
		Insertion tool	Fig 2
11	Install the integrated starter alternator.		AR15.40-P-0003MSA
12	Check engine oil level and correct.
		Engine 256.9 in model 213, 238, 290	AP18.00-P-1812MKI
		Engine 256.9 in model 257	AP18.00-P-1812BKI

Fig 1: Identifying Insertion Device (654 589 01 43 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Insertion Tool (651 589 01 61 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1028-04A	Assembly cleaner	A 000 986 56 01