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Installing Rear Crankshaft Radial Sealing Ring - AR03.20-P-3063-01MMA

ENGINE 276 

MODIFICATION NOTES

16.3.11 Special tool 271 589 00 43 00 replaced by special tool 273 589 00 43 00    
CRANKCASE, TIMING CASE COVER, END COVER

Number Designation Engine 276
BA01.40-P-1002-01K Bolt, rear end cover to crankcase Nm 9
OIL PAN

Number Designation Engine 276
BA01.45-P-1001-01E Bolt, oil pan to cylinder crankcase/timing case cover/rear end cover M6 Nm 9
Fig 1: Identifying Insertion Tool (273 589 00 43 00)
G12933244Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1013-01A Loctite 5970 sealant 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

IMPORTANT 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!

G12933245Courtesy of MERCEDES-BENZ USA
  1. CLEANClean  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).
  2. CLEANClean  and degrease sealing surface of new end cover (2).
  3. Apply sealant in the form of a bead with a height and width of 2.0 mm (±0.5 mm) to the crankcase (4) and oil pan.

    IMPORTANT Use exclusively approved sealants. Do not spread bead. Mount end cover (2) within 5 minutes after applying sealant.

    G12933246Courtesy of MERCEDES-BENZ USA
  4. Mount end cover (2) with crankshaft radial sealing ring (1) on insertion tool (6).

    NOTES 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).

    IMPORTANT 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).

    G12933247Courtesy of MERCEDES-BENZ USA
  5. Separate insertion tool (7) from insertion tool (6).
  6. Mount end cover (2) with crankshaft radial shaft sealing ring (1) and insertion tool (6) onto contact surface (3a) on crankshaft flange (3).

    NOTES 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.

    G12933248Courtesy of MERCEDES-BENZ USA
    G12933249Courtesy of MERCEDES-BENZ USA
  7. Tighten bolts (2a) gradually in crosswise pattern, then tighten the bolts (2b). Observe tightening torque.
  8. Detach insertion tool (6) from crankshaft flange (3).
  9. INSPECTCheck  Carefully lift protective lip (1s) and check the correct installation position of sealing lip (1d).

    NOTES A wrong installation position leads to leakage.

    IMPORTANT The sealing lip (1d) must point towards crankcase (4) all around its circumference.

  10. INSPECTCheck  for correct installation position of the protective lip (1s).

    NOTES An incorrect installation position leads to premature wear of crankshaft radial sealing ring (1).

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

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