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Piston, Connecting Rod, and Bearing Replacement

Special Tools

    • EN-43953 Ring Compressor
    • EN-43966-1 Connecting Rod Guides
    • EN-45059 Angle Meter

For equivalent regional tools, refer to Special Tools .

Removal Procedure

  1. Remove the cylinder head. Refer to Cylinder Head Replacement .
  2. Remove the sump. Refer to Sump Replacement .
  3. Rotate the crankshaft to a position where the connecting rod fasteners are the most accessible.
  4. Mark the connecting rod and cap with the cylinder position. Also mark their orientation. This will ensure the caps and connecting rods are re-assembled properly.
  5. Remove any ridge at the top of the cylinder bore to avoid damage to the piston ring lands.

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  7. Remove the 4 bearing cap bolts (3) and the 2 bearing caps (2) and remove and DISCARD the lower bearing (1).
  8. Install the EN-43966-1 guides on the connecting rod threads before removing the piston and connecting the rod assembly.

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  10. Remove the piston (1) with the connecting rod (2) and remove and DISCARD the upper bearing (3).
  11. Remove the EN-43966-1 guides .

Installation Procedure

  1. Install the EN-43966-1 guides on the connecting rod threads. This protects the crankshaft journal during piston and connecting rod installation.
  2. Install the EN-43953 compressor to the piston and the connecting rod to the correct bore.

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  4. Install the piston (1) with the connecting rod (2) and the NEW upper bearing (3).
  5. Hold the EN-43953 compressor against the engine block until all the rings have entered the cylinder bore.
  6. Remove the EN-43966-1 guides .

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    Note: Ensure that the bearing caps are on the same places than before.

  8. Install the NEW lower bearing (1) with the 2 bearing caps (2).
  9. Caution: Refer to Fastener Caution in the Preface section.

  10. Install the 4 bearing caps bolts (3) and tighten a first pass to 25 N·m (18 lb ft).
  11. Caution: Refer to Torque-to-Yield Fastener Caution in the Preface section.

  12. Tighten the 4 bearing caps bolts (3) a final pass to an additional 100 degrees, using the EN-45059 meter .
  13. Install the oil pan. Refer to Sump Replacement .
  14. Install the cylinder head. Refer to Cylinder Head Replacement .
   


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