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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (6.1L Engine (Service Information)) >> Engine Block >> RING(S), Piston >> Standard Procedure >> Piston Ring Fitting

Piston Ring Fitting

WARNING: This page is about a different variant/trim than selected.
Fig 1: Ring
GC0095615Courtesy of CHRYSLER LLC
CAUTION: Before reinstalling used rings or installing new rings, the ring clearances must be checked or engine damage may result.
  1. Wipe the cylinder bore clean.
  2. Insert the ring into the cylinder bore.
    NOTE: The ring gap measurement must be made with the ring positioned at least 12 mm (0.50 inch) from bottom of cylinder bore.
  3. Using a piston, make sure that the ring is squared in the cylinder bore. Slide the ring downward into the cylinder.
  4. Using a feeler gauge (1), check the ring end gap. Replace any rings not within specification.

    5. PISTON RING SIDE CLEARANCE 

  5. Measure the ring side clearance with a feeler gauge (1) as shown in Fig 1. Make sure the feeler gauge fits snugly between the ring land and the ring. Replace any ring not within specification.
    NOTE: Make sure marks on compression rings face upward.
  6. Rotate the ring around the piston. The ring must rotate in the groove with out binding.
    Fig 2: SIDE RAIL - INSTALLATION
    GC0080314Courtesy of CHRYSLER LLC
  7. Install the oil ring expander.
  8. Install lower side rail by placing one end between the piston ring groove and the expander ring (1). Hold end firmly and press down the portion to be installed until side rail is in position. Repeat step for upper side rail.
    Fig 3: UPPER AND INTERMEDIATE RINGS
    GC0095616Courtesy of CHRYSLER LLC
  9. Install No. 2 intermediate piston ring using a piston ring installer.
  10. Install No. 1 upper piston ring using a piston ring installer.
    Fig 4: PISTON RING END GAP POSITION
    GC0095617Courtesy of CHRYSLER LLC
  11. Install the oil ring expander gap at the (5) position.
  12. Install the oil ring lower side rail gap at the (4) position.
  13. Install the oil ring upper side rail gap at the (1) position.
  14. Install the second compression ring gap at the (5) position.
  15. Install the top compression ring gap at the (2) position.
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