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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 >> Crankshaft End Play

Crankshaft End Play

  1. Using dial indicator, check crankshaft end play. Inspect crankshaft thrust surfaces or thrust bearing for wear if not within specification. See ENGINE SPECIFICATIONS table.
  2. Replace thrust bearing if required. When replacing thrust bearing, pry crankshaft forward then reward prior to tightening main bearing cap to specification. Recheck end play. Replace crankshaft if not within specification.
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