Piston And Connecting Rod

WARNING: This page is about a different car, the 2022 Chrysler Voyager and 2022 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.

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1 - Rod Bearing

2 - Rod Bearing

Wipe the inserts clean.
Inspect the inserts for abnormal wear patterns, scoring, grooving, fatigue, pitting and for metal or other foreign material imbedded in the lining.
Inspect the back of the inserts for fractures, scrapes, or irregular wear patterns.
Inspect the insert locking tabs for damage.
Replace any bearing that shows abnormal wear. Refer to BEARING(S), CONNECTING ROD, STANDARD PROCEDURE .

Courtesy of CHRYSLER GROUP, LLC

1 - Position Indicator
Inspect the connecting rod bearing bores 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.
Replace misaligned, bent or twisted connecting rods.
NOTE:
Connecting rods are serviced with the piston pre-assembled. The pistons are "select fit" to achieve proper specification oil clearance. Refer to ROD, PISTON AND CONNECTING, STANDARD PROCEDURE .

Courtesy of CHRYSLER GROUP, LLC

1 - Coating Material

2 - Coating Material

NOTE:
Typical coated piston shown in illustration.
Inspect the piston for scoring or scraping marks in the piston skirts. Check the ring lands for cracks and/or deterioration.
Check the piston for taper and out of round shape.
NOTE:
The coating material is applied to the piston after the final piston machining process. Measuring the outside diameter of a coated piston will not provide accurate results. Therefore measuring the inside diameter of the cylinder bore with a dial Bore Gauge is MANDATORY . Refer to ENGINE BLOCK, INSPECTION .
Compare the measured cylinder bore diameter to the engine block cylinder bore grade marking chart. Refer to ROD, PISTON AND CONNECTING, STANDARD PROCEDURE . Select the piston size that corresponds to the engine block markings for each cylinder to provide the proper specification oil clearance.

NOTE:

Piston installation into the cylinder bore requires 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.

NOTE:

The coated pistons will be serviced with the piston pin and connecting rod pre-assembled.