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Piston And Connecting Rod

WARNING: This page is about a different variant/trim than selected.
Fig 1: Oil Drain Plug
GC0054679Courtesy of CHRYSLER LLC
NOTE: Pistons, rings, and rods are serviced as an assembly.
CAUTION: To maintain engine balance, 1, 3, or 4 pistons can be replaced. If 2 pistons are replaced, engine will be out of balance.
  1. Remove engine. See REMOVAL .
  2. Remove cylinder head. See REMOVAL .
  3. Drain engine oil (2).
  4. Remove oil pan (1). See REMOVAL .
    Fig 2: Oil Filter
    GC0054680Courtesy of CHRYSLER LLC
  5. Remove oil filter (1).
  6. Remove balance shaft assembly.
  7. Remove ladder frame.
    NOTE: Remove any carbon build up and clean debris from cylinder prior to piston removal to avoid scratching piston skirts.
  8. Remove top ridge of cylinder bores with a reliable ridge reamer before removing pistons from cylinder block. Be sure to keep tops of pistons covered during this operation  .
    Fig 3: Identify Connecting Rod to Cylinder-Typical
    GC0054681Courtesy of CHRYSLER LLC
  9. Rotate crankshaft so that each connecting rod is centered in cylinder bore.
  10. Using a permanent ink or paint marker, identify cylinder number on each connecting rod cap.
    CAUTION: DO NOT use a number stamp or a punch to mark connecting rods, as damage to connecting rod may occur.
    CAUTION: Care must be taken not to damage the fractured rod and cap joint surfaces, as engine damage may occur.
  11. Remove connecting rod bolts and cap.
    NOTE: Do not reuse connecting rod bolts.
  12. Carefully push each piston and rod assembly out of cylinder bore. Reinstall bearing cap on the mating rod.
  13. Repeat procedure for each piston and connecting rod assembly.
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