LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2007 >> Optra5 LS, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine Mechanical - 1.8L (L79) >> Repair Instructions >> Piston, Connecting Rod, and Bearings Cleaning and Inspection >> Inspection Procedure - Connecting Rods

Inspection Procedure - Connecting Rods

    Fig 1: View Of Plastic Gaging Thread On Bearing
    GM1289905Courtesy of GENERAL MOTORS CORP.
  1. Coat the connecting rod bearings with engine oil.
  2. Install the upper connecting rod bearings into the connecting rod journals.
  3. Install the lower connecting rod bearings into the connecting rod bearing caps.
    4. IMPORTANT: Grease the connecting rod journals and lubricate the connecting rod bearings slightly so that the plastic gaging thread does not tear when the connecting rod bearing caps are removed.
  4. Inspect all of the connecting rod bearing clearances using a commercially available plastic gaging, ductile plastic threads.
  5. Cut the plastic gaging threads to the length of the bearing width. Lay them axially between the connecting rod journals and the connecting rod bearings.
    6. Fig 2: Tightening Connecting Rod Bearing Cap Bolts
    GM1289862Courtesy of GENERAL MOTORS CORP.
  6. Install the connecting rod bearing caps.
    7. NOTE: Refer to Fastener Notice .
  7. Install the connecting rod bearing cap bolts.

    Tighten:  Tighten the bolts to 35 N.m (26 lb ft)  using a torque wrench. Using J 45059  and KM-470-B  (1), tighten the bolts plus 45 degrees plus 15 degrees.

    8. Fig 3: Measuring Plastic Thread Using Scale
    GM1289906Courtesy of GENERAL MOTORS CORP.
  8. Remove the connecting rod bearing caps.
  9. Measure the width of the flattened plastic thread of the plastic gaging using a ruler. Plastic gaging is available for different tolerance ranges.
  10. Inspect the bearing clearance for permissible tolerance ranges.
scientia non olet · About LEMON Manuals