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Install Rear Radial Shaft Sealing Ring - AR03.20-P-3003-01MFC

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Engine 260 in model 118, 177, 247 

MODIFICATION NOTES

20.05.2019 Rear end cover bolt at crankcase/oil pan (belt side)   BA01.40-P-1002-01K
CRANKCASE, TIMING CASE COVER, END COVER

Number Designation Engine 260
BA01.40-P-1002-01K Screw, rear end cover to crankcase/oil pan (belt side) Nm 9
Fig 1: Identifying Insertion Tool (271 589 02 43 00)
G15031200Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1013-01A Sealant, Loctite 5970, 50 ml A 003 989 98 20 10
BR00.45-Z-1028-04A Assembly cleaner A 000 986 56 01
BR00.45-Z-1038-04A Loctite 7200 A 010 989 90 71

IMPORTANT The radial shaft sealing ring (6) is vulcanized into the end cover (5) and can only, therefore, be replaced together with the end cover (5). Do not reuse end cover (5) with radial shaft sealing ring (6) after removal.

The radial shaft sealing ring (6) has both a sealing lip and a protective lip. The sealing lip, protective lip and contact surface on the crankshaft flange must not be oiled for assembly.

  1. Clean and degrease crankcase (3) and oil pan (4) in area where sealant was applied as well as contact surface on crankshaft flange with assembly cleaner, Clean and degrease Loctite 7200.
    G12816459Courtesy of MERCEDES-BENZ USA
  2. Clean sealing surface of the new end cover (5) using the Cleaner from the package and Loctite 7200 Clean and degrease.
  3. Apply sealant in the form of a bead with a height and width of 2.0 mm (±0.5 mm) on the crankcase (3) and oil pan (4).

    IMPORTANT Use approved sealant only. Do not spread bead. Install end cover (5) within 5 min of applying sealant.

    G12816460Courtesy of MERCEDES-BENZ USA
  4. Plug end cover (5) with radial shaft sealing ring (6) onto SPECIAL TOOL insertion tool (02).

    NOTES Make sure that the protective lip faces in the direction of the transmission housing and the sealing lip faces in the direction of the crankcase (3). Leaks could occur otherwise at the radial shaft sealing ring (6).

    IMPORTANT The radial shaft sealing ring (6) can be mounted on the SPECIAL TOOL insertion tool (02) only if SPECIAL TOOL insertion tool (02) is connected to SPECIAL TOOL insertion tool (01).

    G12816461Courtesy of MERCEDES-BENZ USA
  5. SPECIAL TOOL Detach insertion tool (01) from SPECIAL TOOL insertion tool (02).
  6. Install end cover (5) with radial shaft sealing ring (6) and SPECIAL TOOL insertion tool (02) on contact surface (7a) on crankshaft flange (7).

    NOTES The contact surface (7a) must not be removed with coarse abrasive cloth.

    This destroys the surface of the crankshaft and the crankshaft will be unusable.

    G12816462Courtesy of MERCEDES-BENZ USA
  7. Tighten screws (5) in stages cross-wise TORQUE SPECIFICATION .
  8. Detach insertion tool (02) from crankshaft flange (7).
  9. Raise protective lip carefully and check for correct installation position of the sealing lip.

    IMPORTANT A wrong installation position leads to leakage.

    IMPORTANT The sealing lip must point towards the crankcase (3) all around its circumference.

  10. Check for correct installation position of the protective lip.

    IMPORTANT The protective lip must point towards the transmission housing all around its circumference. An incorrect installation position leads to premature wear of the radial shaft sealing ring (6).

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