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Home >> BMW >> 1973 >> 3.0CS _NA_, Standard Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> BMW Engines - 2500, 2800, 3.0 & BAVARIA 6 Cylinder >> Rear Main Bearing Oil Seal Replacement

Rear Main Bearing Oil Seal Replacement

NOTE: To replace rear main bearing oil seal in vehicle, transmission must be removed.
  1. Remove clutch and flywheel and drain engine oil. Remove bolts securing oil pan to rear main bearing oil seal mount.
  2. Loosen all oil pan bolts and carefully loosen oil pan gasket around seal mount, taking care not to damage gasket. Remove bolts securing seal mount to crankcase and remove mount.
    Fig 1: Rear Main Bearing Oil Seal Installation
    G09325563Courtesy of BMW OF NORTH AMERICA, INC.
  3. Pry out old seal and install new one making sure it is fully seated in mount. Apply Atmosit sealer to junction of oil pan and seal mount. To install mount, reverse removal procedure.
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