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

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CRANKCASE, TIMING CASE COVER, END COVER

Number	Designation			Engine 642
BA01.40-P-1001-01S	Bolt connecting rear end cover to crankcase	Stage 1	Nm	8
BA01.40-P-1001-01S	Bolt connecting rear end cover to crankcase	Stage 2	Nm	10

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	Loctite sealant 5970	A 003 989 98 20
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
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

The lips of radial shaft sealing ring (1) must not be touched.

When using the insertion tool always ensure that sealing lip (1d) of radial sealing ring (1) is correctly aligned.

The radial sealing ring (1) and contact surface (3a) on crankshaft flange (3) must not have any oil and grease on them.

Fig 2: Identifying Rear Crankshaft Radial Sealing Ring Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Clean and degrease crankcase (4) in area of sealant application as well contact surface (3a) on crankshaft flange (3).
The contact surface (3a) must not be cleaned using abrasive paper since this would damage the surface of the crankshaft.

If manual transmission fitted
Clean and degrease sealing surface of new end cover (2).
Apply sealant in the form of a bead with a diameter of around 2.0 mm on end cover (2) .
Only use approved sealants. Do not spread bead (A). Mount end cover (2) within 5 minutes after applying sealant.

Fig 3: Identifying Sealant Bead On End Cover (Manual Transmission Fitted)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

If automatic transmission fitted
Clean and degrease sealing surface of new end cover (2).
Apply sealant in the form of a bead with a diameter of around 2.0 mm on crankcase (4) and oil pan.
Only use approved sealants. Do not spread bead (A). Mount end cover (2) within 5 minutes after applying sealant.

Fig 4: Identifying Sealant Bead On End Cover (Automatic Transmission Fitted)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fit insertion tool (271 ) and insertion tool (271a) together.
Upon subsequent assembly, the conical form of the insertion tool ( 271a) presses the lip (1d) into the correct direction.
Slide end cover (2) with radial sealing ring (1) on insertion tool (271) fitted together.
Ensure that the lip (1d) points towards the output side, that is towards the engine.
Detach insertion tool (271a) from insertion tool (271).

Fig 5: Inserting Radial Sealing Ring
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 6: Identifying Radial Shaft Sealing Ring Components
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Insert insertion tool (271) with preassembled end cover (2) or radial sealing ring (1) into crankshaft flange (3).
Slide end cover (2) with radial sealing ring (1) carefully onto contact surface (3a) of the crankshaft flange (3).
While doing this, check the correct installation position of the lip (1d).

A wrong installation position leads to leakage.

The lip (1d) must point towards the crankcase (4) all around its circumference.
Detach insertion tool (271) from crankshaft flange (3).
Check for correct installation position of the protective lip (1s).
Incorrect installation position leads to premature wear of the radial shaft sealing ring (1).

The protective lip (1s) must point towards transmission housing around its entire circumference.
Tighten bolts (2a) gradually diagonally.