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Home >> Jeep >> 1987 >> Cherokee Limited >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 4.0L 6-CYL - VIN [M] & 4.2L 6-CYL - VIN [C] >> Overhaul >> Main Bearings >> Crankshaft End Play

Crankshaft End Play

  1. Measure crankshaft end play with dial indicator. Crankshaft end play desired range is .0020"-.0025" (.015-.064 mm). If end play exceeds .0065" (.16 mm), inspect thrust faces for wear.
  2. If no wear is visible, install new thrust bearing and remeasure end play. If end play still exceeds specifications, replace crankshaft. When replacing thrust bearing, crankshaft should be moved back and forth to align thrust faces of bearings before final tightening.
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