Replace rear radial shaft sealing ring

AR03.20-P-3003MRT

Replace rear radial shaft sealing ring

06.03.2020

Engine

256.9 in model 222

1

Radial shaft sealing ring

3

Insertion device

3a

Insertion device

2

Timing case cover

3

Insertion device

3a

Insertion device

4

Insertion device

 Caution

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-0003MRT

2

Clean the 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 sealing surface at timing case cover (2).
Otherwise, leaks will occur.



Check

4

Check the sealing surface of the radial shaft sealing ring (1) on the timing case cover (2) for ridging and damage.

If ridging or damage is present,



Replace timing case cover (2).

AR01.40-P-8000MRT



Clean

5

Clean the sealing surface on the timing case cover (2) and crankshaft.


The radial shaft sealing ring (1) and contact surface on the crankshaft must be grease-free.
Otherwise, leaks will occur.

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

*651589016100

7

Attach the insertion device (3a) to the crankshaft and secure using two bolts.

 Insertion tool

*651589016100

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

*651589016100

 Insertion device

*654589014300

9

Install the radial shaft sealing ring (1) until the insertion device (3) lies on the timing case cover (2).


The radial shaft sealing ring (1) must be flush with the timing case cover (2).
Otherwise, leaks will occur.

 Ensure that the radial shaft sealing ring (1) is positioned uniformly around its entire circumference.

 Insertion tool

*651589016100

10

Remove the insertion devices (3, 3a, 4).

 Insertion device

*654589014300

 Insertion tool

*651589016100

11

Install the integrated starter alternator.

AR15.40-P-0003MRT

 Only install lower engine compartment paneling after leak test.

12

Check engine oil level and correct.



AP18.00-P-1812SKI

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01