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Home >> Jeep >> 1990 >> Cherokee Laredo, 2D Utility, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 4.0L 6-CYL - VIN [L] & 4.2L 6-CYL - VIN [T] >> Removal & Installation >> Main Bearings >> Installation

Main Bearings: Installation

  1. Note color code on edge of bearings removed. Install main bearings. Ensure caps are installed in original location with arrow on cap facing toward front of engine. Using Plastigage method, check bearing clearances. See ENGINE SPECIFICATIONS tables at end of this article.
  2. Replace bearings as necessary to obtain correct clearance. Bearings are available in standard and undersize applications. If required, different sized upper and lower bearings may be installed to obtain correct oil clearance.
    NOTE: If different sized bearings are used, the odd sized bearings must all be uniform in location (upper or lower). DO NOT use bearings with a thickness difference exceeding .001" (.02 mm).
  3. Check crankshaft end play. See appropriate table under ENGINE SPECIFICATIONS at end of this article. Rotate crankshaft to ensure freedom of movement. To install remaining components, reverse removal procedure. Torque bolts to specification. See TORQUE SPECIFICATIONS table at end of this article.
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