Dakota 2WD V6-239 3.9L (1987)
Crankshaft Main Bearing: Service and Repair
Crankshaft main bearings are not interchangeable and should be marked at removal to ensure correct assembly. Upper and lower bearing halves are not
interchangeable. Lower main bearing halves of Nos. 1 and 3 are interchangeable. Bearings are available in standard size and undersizes of .001, .002,
.003, .010 and .012 inch.