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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Mechanical - 2.8L (LWN) Diesel) >> Repair Instructions - Off Vehicle >> Crankshaft and Bearing Installation >> Micrometer Method

Micrometer Method

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the main bearing caps and tighten the main bearing cap bolts to specification.
  2. Measure the main bearing bore inside diameter in several places, 90 degrees apart, and average the measurements for each bore.
  3. Measure the crankshaft main bearing journal diameter in several places, 90 degrees apart, and average the measurements for each journal.
  4. Select the correct crankshaft bearings for each journal. Refer to Crankshaft Bearing Selection Specifications .
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