Rod Bearings / Connecting Rod / Piston Inspection

ROD BEARINGS 

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1. Wipe the bearing inserts clean.
2. Inspect the inserts for abnormal wear patterns, scoring, grooving, fatigue, pitting and for metal or other foreign material imbedded in the lining.
3. Inspect the back of the inserts for fractures, scrapes, or irregular wear patterns.
4. Inspect the insert locking tabs for damage.
5. Replace any bearing that shows abnormal wear. Refer to STANDARD PROCEDURE  .

CONNECTING ROD 

Courtesy of CHRYSLER GROUP, LLC

1. Inspect the bearing bores of the connecting rod for signs of scoring, nicks and burrs.
   NOTE:

   Misaligned or bent connecting rods can cause abnormal wear on pistons, piston rings, cylinder walls, connecting rod bearings and crankshaft connecting rod journals. If wear patterns or damage to any of these components indicate the probability of a misaligned connecting rod, inspect it for correct rod alignment.

2. Replace any misaligned, bent or twisted connecting rods.
   NOTE:

   Connecting rods are serviced with the piston pre-assembled. The pistons are "select fit" to achieve proper oil clearance. Refer to STANDARD PROCEDURE  .

PISTON 

Courtesy of CHRYSLER GROUP, LLC

1. Inspect the piston for scoring or scraping marks in the piston skirts. Check the ring lands for cracks and/or deterioration.
   NOTE:

   The coating material is applied to the piston after the final piston machining process. This coating may affect the outside diameter measurement of a coated piston may not provide accurate results.

2. Check the piston for taper and out of round shape.
   NOTE:

   Piston installation into the cylinder bore may require slightly more pressure than that required for non-coated pistons. The bonded coating on the piston will give the appearance of a line-to-line fit with the cylinder bore.