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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Mechanical - 1.8L (Lay)) >> Repair Instructions - Off Vehicle >> Piston, Connecting Rod, and Bearing Installation

Piston, Connecting Rod, and Bearing Installation

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  1. Install the connecting rod bearing to the connecting rod and bearing cap.
    2. Fig 1: Measuring Distance Between Connecting Rod & Bearing Cap Edges & Connecting Rod Bearing Edge
    GM2017329Courtesy of GENERAL MOTORS CORP.
    NOTE: Do not apply engine oil to the bearings or the contact surfaces.
  2. Using vernier calipers, measure the distance between the connecting rod and bearing cap edges and the connecting rod bearing edge.

    Specification:  Dimension (A - B): 0.7 mm (0.0276 in) or less

  3. Apply engine oil to the cylinder walls, the pistons, and the surfaces of the connecting rod bearings.
    4. Fig 2: Identifying Proper Piston Ring Positioning
    GM2017317Courtesy of GENERAL MOTORS CORP.
    NOTE: Do not align the ring ends.
  4. Position the piston rings so that the ring ends are as shown in the illustration.
    5. Fig 3: View Of Piston & Rod Installation Into Block
    GM2017330Courtesy of GENERAL MOTORS CORP.
    NOTE:
    • When inserting the piston with connecting rod, do not allow it to make contact with the oil nozzle.
    • Match the numbered connecting rod cap with the connecting rod.
  5. Using a piston ring compressor, push the correctly numbered piston and connecting rod assembly into the cylinder with the front mark of the piston facing forward.
    6. Fig 4: Identifying Connecting Rod Cap Installation
    GM2017273Courtesy of GENERAL MOTORS CORP.
  6. Check that the protrusion of the connecting rod cap is facing in the correct direction.
  7. Apply a light coat of engine oil to the threads and under the heads of the connecting rod cap bolts.
    8. NOTE: The connecting rod cap bolts should be tightened in 2 progressive steps.
  8. Install the connecting rod cap bolts.
    9. Fig 5: Identifying Connecting Rod Cap Bolts
    GM2017331Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  9. Using SST  , install and alternately tighten the bolts of the connecting rod cap in several steps to 20 N.m (15 lb ft).
    10. Fig 6: Identifying Connecting Rod Cap Bolt Tightening Final Step
    GM2017332Courtesy of GENERAL MOTORS CORP.
  10. Mark the front of the connecting rod cap bolts with paint.
  11. Further tighten the cap bolts an additional 90 degrees as shown.
  12. Check that the crankshaft turns smoothly.
  13. Check the connecting rod thrust clearance.
    14. Fig 7: Identifying Ventilation Case Contact Surface
    GM2017333Courtesy of GENERAL MOTORS CORP.
    NOTE:
    • Remove any oil from the contact surface.
    • Install the No. 1 ventilation case within 3 minutes and tighten the bolts and nuts within 15 minutes after applying seal packing.
    • Do not start the engine for at least 2 hours after installing.
  14. Apply Three Bond 1207B or equivalent Bead diameter: 2.0 mm (0.0787 in) seal packing in a continuous bead as shown in the illustration.
    15. Fig 8: View Of 6 Bolts & 2 Nuts
    GM2017250Courtesy of GENERAL MOTORS CORP.
  15. Install the No. 1 ventilation case with the 6 bolts and 2 nuts and tighten to 10 N.m (7 lb ft).
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