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Home >> Jeep >> 1988 >> Comanche Eliminator, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 4.0L 6-CYL - VIN [M] & 4.2L 6-CYL - VIN [C] >> Removal & Installation >> Main Bearing >> Removal

Main Bearing: Removal

Remove oil pan. See OIL PAN REMOVAL at end of ENGINE section. Ensure main bearing caps are marked for location. Remove bearing cap. Rotate crankshaft to remove bearings. Note color code on edge of bearing.

NOTE: Crankshaft main bearing journal diameters are indicated by a color code. Color code is placed on the adjacent cheek toward the flanged (rear) end of crankshaft for all except the rear main. Rear main is color coded on the rear flange. Note color code to determine proper bearing usage. Check oil clearance after bearing installation.
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