LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1819 (Engine Mechanical - 3.5L (L66)) >> Repair Instructions >> Off Vehicle Repair Instructions >> Crankshaft and Bearings Cleaning and Inspection >> Main Bearing Selection

Main Bearing Selection

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating Main Bearing Stamp Marks
    GM897395Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Letters or bars have been stamped on the oil pan surface of the block, as a code for the inside diameter (I.D.) size of each of the 4 main journal bores. Use the block and crankshaft markings to choose the correct size bearings. If the codes are not legible due to dirt or debris, do not scrub with a wire brush or scraper. Clean them only with solvent or detergent.
  1. Locate the main journal bore diameter markings on the engine block rear flange. The first letter or bar (1) identifies crankshaft main journal number 1.
    2. Fig 2: Locating Crankshaft Main Journal Stamp Marks
    GM897396Courtesy of GENERAL MOTORS CORP.
  2. Locate the main journal outside diameter (O.D.) markings on the front of the crankshaft. The first number (1) identifies crankshaft main journal number 1.
  3. Select the main journal bearings. Refer to Crankshaft Bearings Selection Specifications .
scientia non olet · About LEMON Manuals