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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 6.2L V8 Diesel - VINS [C,J] >> Overhaul >> Crankshaft & Main Bearings >> Installation

Crankshaft & Main Bearings: Installation

  1. Coat upper main bearing with engine oil. Install bearing in cylinder block. Bearing end without tang fits in notched location of cylinder block.
  2. Install main bearing remover/installer in crankshaft oil hole. Slowly rotate crankshaft and install bearing. Support crankshaft upward to take up clearance. Check bearing clearance using Plastigage method.
  3. Install main bearing and cap. Ensure bearing caps are installed in proper location. Lightly oil bolts with engine oil. Tighten all main bearing caps to specification. See TORQUE SPECIFICATIONS table.
  4. Once bearing clearance is checked, remove cap and coat bearing and journals with engine oil. Install all bearing caps except No. 5 rear bearing cap.
  5. Apply anaerobic sealant on No. 5 main bearing cap in specified area. See Fig 1. Do not allow sealant to contact seal area. Coat seal lip area with engine oil. Install bearing cap and bearing.
    Fig 1: Applying Sealant to Rear Main Bearing Cap
    G91473Courtesy of GENERAL MOTORS CORP.
  6. Tighten all main bearing caps to specification except No. 3. Tighten No. 3 to 10 ft. lbs. (14 N.m). Crankshaft end play must be checked.
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