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Home >> Chevrolet >> 2005 >> Aveo Base, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 109 (Engine Mechanical - 1.6L) >> Repair Instructions - Off Vehicle >> Crankshaft and Bearing Cleaning and Inspection

Crankshaft and Bearing Cleaning and Inspection

WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Inspecting Crankshaft End Play
    GM1289681Courtesy of GENERAL MOTORS CORP.
  1. Coat the crankshaft bearings with engine oil.
  2. Install the upper crankshaft bearings into the engine block crankshaft journals.
  3. Install the lower crankshaft bearings into the crankshaft bearing caps.
  4. Install the crankshaft.
  5. Inspect the crankshaft end play with the crankshaft bearings installed.
  6. Check for permissible crankshaft end play. Refer to Engine Mechanical Specifications .
    7. Fig 2: Checking Middle Crankshaft Journal For Out-Of-Round Runout
    GM1289682Courtesy of GENERAL MOTORS CORP.
  7. With the crankshaft mounted on the front and rear crankshaft bearings, check the middle crankshaft journal for permissible out-of-round (runout). Refer to Engine Mechanical Specifications .
    8. Fig 3: Inspecting Crankshaft Bearing Clearances
    GM1289683Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Grease the crankshaft journals and lubricate the crankshaft bearings slightly so that the plastic gaging thread does not tear when the crankshaft bearing caps are removed.
  8. Inspect all of the crankshaft bearing clearances using a commercially available plastic gaging (ductile plastic threads).
  9. Cut the plastic gaging threads to the length of the bearing width. Lay them axially between the crankshaft journals and the crankshaft bearings.
    10. Fig 4: Using J 45059 To Tighten Bearing Caps
    GM1241797Courtesy of GENERAL MOTORS CORP.
  10. Install the crankshaft bearing caps.
    11. NOTE: Refer to Fastener Notice .
  11. Install the crankshaft bearing cap bolts.

    Tighten:  Tighten the crankshaft bearing cap bolts to 50 N.m (37 lb ft). Using the J 45059  or KM-470-B  (1) tighten the crankshaft bearing cap bolts 45 degrees plus 15 degrees.

    12. Fig 5: Measuring Plastic Gaging
    GM1289685Courtesy of GENERAL MOTORS CORP.
  12. Remove the crankshaft bearing caps.
  13. Measure the width of the flattened plastic thread of the plastic gaging using the scale printed on the plastic gaging package.
  14. Inspect the bearing clearances for permissible tolerance ranges. Refer to Engine Mechanical Specifications .
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