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

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2016 Mercedes-Benz E63 S AMG, 2016 Mercedes-Benz E400, 2016 Mercedes-Benz E350, 2016 Mercedes-Benz E300, and 2016 Mercedes-Benz E250. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE 272 (except 272.974)

MODIFICATION NOTES

22.8.08

Sealant path - altered

CRANKCASE, TIMING CASE COVER, END COVER

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

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

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1013-01A	Loctite sealant 5970	A 003 989 98 20
BR00.45-Z-1028-04A	Cleaner from package	Adolf Wurth GmbH & Co. KG
BR00.45-Z-1038-04A	Loctite 7200	Henkel Loctite Deutschland GmbH

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

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

Fig 2: Crankshaft Radial Sealing Ring, Protective Lip And Contact Surface

Courtesy of MERCEDES-BENZ USA

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

Fig 3: Sealant Application Area On Crankcase And Oil Pan
Courtesy of MERCEDES-BENZ USA
Mount end cover (2) with crankshaft radial sealing ring (1) on insertion tool (6).
Make sure that protective lip (1s) faces towards the side applying the force and sealing lip (1d) faces in the direction of the crankcase (4). Leakage could occur otherwise at rear crankshaft radial sealing ring (1).

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

Fig 4: Sealing Lip And Insertion Tools
Courtesy of MERCEDES-BENZ USA
Separate insertion tool (7) from insertion tool (6).
Mount end cover (2) with crankshaft radial shaft sealing ring (1) and insertion tool (6) onto contact surface (3a) on crankshaft flange (3).
The contact surface (3a) must not be removed with emery board as this can destroy the surface of the crankshaft and render the crankshaft unusable.

Fig 5: End Cover, Crankshaft Radial Shaft Sealing Ring And Insertion Tool
Courtesy of MERCEDES-BENZ USA

Fig 6: Checking For Protective Lip Correct Installation Position
Courtesy of MERCEDES-BENZ USA
Tighten bolts (2a) gradually in crosswise pattern, then tighten the bolts (2b). Observe tightening torque.
Detach insertion tool (6) from crankshaft flange (3).
Carefully lift protective lip (1s) and check the correct installation position of sealing lip (1d).
A wrong installation position leads to leakage.

The sealing lip (1d) must point towards crankcase (4) all around its circumference.
Check for correct installation position of the protective lip (1s).
An incorrect installation position leads to premature wear of crankshaft radial sealing ring (1).

The protective lip (1s) must point towards transmission housing around its entire circumference.