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Crankshaft & Main Bearings

WARNING: This page is about a different car, the 1995 Jeep Wrangler and 1994 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect bearings for damage or wear. Replace as necessary. Using Plastigage, measure bearing clearance. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table under ENGINE SPECIFICATIONS . Bearings are available in standard and undersize. If necessary, different size upper and lower bearings may be installed to obtain correct oil clearance. Lubricate bearings before installation.
    NOTE: If different size bearings are installed, the odd size bearings must all be uniform in location (upper or lower). Never combine bearing inserts that differ by more than .001" (.03 mm).
  2. Install upper bearing inserts. Install bearing caps and lower inserts. Tighten bearing caps No. 1, 3, 4 and 5 in 3 stages to specs. Pry crankshaft to front or rear and tighten bolts for cap No. 2 to specification in 3 stages. Rotate crankshaft to ensure freedom of movement after tightening each cap. See TORQUE SPECIFICATIONS . See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table.
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