Install rear crankshaft radial sealing ring - AR03.20-P-3063-01VA

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CRANKCASE, TIMING CASE COVER, END COVER

Number	Designation		Engine 272
BA01.40-P-1004-01G	Bolt for end cover on crankcase or oil pan	Nm	8

Fig 1: Identifying Insertion Tool (271 589 00 43 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1013-01A	Sealant	A 003 989 98 20
BR00.45-Z-1038-04A	Loctite 7200	Henkel Loctite Deutschland GmbH Arabellastrasse 17 81925 Munchen Germany Tel. +49 899268-0 Fax + 49 899101978 www.Loctite.de
BR00.45-Z-1028-04A	Cleaner from package	Adolf Wurth GmbH & Co. KG Reinhold-Wurth-Str. 12-17 74653 Kunzelsau-Gaisbach Germany Tel. +49 7940 15-0 Fax +49 7940 15-1000 www.wuerth.de

The crankshaft radial sealing ring (1) is vulcanized in the end cover (2) and it can therefore only be replaced together with the end cover (2). Do not reuse the end cover (2) with the crankshaft radial sealing ring (1) after removal.

The crankshaft radial sealing ring (1) has both a lip (1d) and a protective lip (1s). The lip (1d), protective lip (1s) and contact surface (3a) on the crankshaft flange (3) must not be lubricated for assembly purposes!

Fig 2: Identifying Crankshaft Radial Sealing Ring, End Cover And Crankshaft Flange

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Clean and degrease crankcase (4) and oil pan in the area of application of the sealing compound as well as the contact surface (3a) on the crankshaft flange (3).
Clean and degrease the sealing surface on the new end cover (2).
Apply sealing compound in the form of a bead (A) with a height and width of 2.0 mm (± 0.5) mm on the crankcase (4) and oil pan.
Use exclusively approved sealing compounds. Do not spread bead (A). Mount end cover (2) within 5 minutes after applying the sealing compound.

Fig 3: Identifying Sealing Bead
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Mount end cover (2) with crankshaft radial sealing ring (1) on insertion tool (6).
Ensure that the protective lip (1s) points in the direction of the power takeoff side and the lip (1d) points away from the power takeoff side. Leaks may otherwise at the crankshaft radial sealing ring (1).

The rear crankshaft radial sealing ring (1) can only be mounted on the insertion tool (6) if the insertion tool (6) is fitted together with the insertion tool (7).

Fig 4: Identifying Lip On Crankshaft Radial Sealing Ring And Insertion Tool
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Separate insertion tool (7) from insertion tool (6).
Mount the end cover (2) with the crankshaft radial shaft sealing ring (1) and insertion tool (6) on the contact surface (3a) on the crankshaft flange (3).
The contact surface (3a) must not be removed with an emery cloth, as this can destroy the surface of the crankshaft and render the crankshaft unusable.

Fig 5: Identifying End Cover, Crankshaft Flange And Insertion Tool
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 6: Identifying Crankshaft Radial Shaft Sealing Ring Components
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Tighten bolts (2a) stepwise diagonally and then tighten bolts (2b). Observe the tightening torque.
Detach the insertion tool (6) from the crankshaft flange (3).
Lift protective lip (1s) carefully and check for correct installation position of the lip (1d).
A wrong installation position leads to leakage.

The lip (1d) must point over it whole extent towards the crankcase (4).
Check for correct installation position of the protective lip (1s).
An incorrect installation position leads to premature wear of the crankshaft radial sealing ring (1).

The protective lip (1s) must point over it whole extent towards the crankcase.