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PISTON RING SIDE CLEARANCE Dodge Durango II рестайлинг

5.7L Engine - Service Information 4 illustrations ~295 words

PISTON RING SIDE CLEARANCE

Note. Make sure the piston ring grooves are clean and free of nicks and burrs.

Scheme 451

Scheme 451: PISTON RING SIDE CLEARANCE
Scheme 451: PISTON RING SIDE CLEARANCE
1 - FEELER GAUGE
  1. Measure the ring side clearance as shown in illustration, making sure the feeler gauge (1) fits snugly between the ring land and the ring. Replace any ring not within specification.
  2. Rotate the ring around the piston, the ring must rotate in the groove with out binding.
Ring PositionRing/GrooveMaximum
Side ClearanceClearance
Upper Ring0.02-0.07 mm0.11 mm
(0.0008- 0.0028 in.)(0.004 in.)
Intermediate Ring0.02-0.06 mm0.10 mm
(0.0008-0.0023 in.)(0.004 in.)
Ring PositionRing GapWear Limit
Upper Ring0.23-0.38 mm0.43 mm
(0.0090-0.0149 in.)(0.017 in.)
Intermediate Ring0.35-0.60 mm0.74 mm
(0.0137-0.0236 in.)(0.029 in.)
Oil Control Ring0.015-0.66 mm0.76 mm
(Steel Rail)(0.0059- 0.0259 in.)(0.030 in.)

Scheme 452

Scheme 452: PISTON RING INSTALLATION
Scheme 452: PISTON RING INSTALLATION
1 - SIDE RAIL END

Note. The No. 1 and No. 2 piston rings have a different cross section. Ensure No. 2 ring is installed with manufacturers I.D. mark (Dot) facing up, towards top of the piston.

Note. Piston rings are installed in the following order: Oil ring expander. Lower oil ring side rail. Upper oil ring side rail. No. 2 Intermediate piston ring. No. 1 Upper piston ring.

Scheme 453

Scheme 453
Scheme 453

Scheme 454

Scheme 454
Scheme 454
  1. Install the oil ring expander.
  2. Install upper side rail by placing one end between the piston ring groove and the expander ring. Hold end firmly and press down the portion to be installed until side rail is in position. Repeat this step for the lower side rail.
  3. Install No. 2 intermediate piston ring using a piston ring installer.
  4. Install No. 1 upper piston ring using a piston ring installer. NOTE: Install the piston rings so the gaps positioned as indicated with the piston viewed from the top. NOTE: Staggering ring gap is important for oil control.
  5. Install the oil expander so the ring gap is located in the (1) position.
  6. Install the oil ring rails so the ring gap is located in the (2,4) position.
  7. Install the second compression ring so the ring gap is located in the (3) position.
  8. Install the top compression so the ring gap is located in the (1) position.