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Piston Pin Inspection

  1. Inspect piston pin for cracks, wear and heat damage. Replace as necessary. Measure piston pin diameter and piston pin bore. Pin-to-piston clearance is difference between the 2 measurements. See PISTONS, PINS & RINGS  under ENGINE SPECIFICATIONS. If pin-to-piston clearance is greater than specification or service limit (H22A4 or 2.3L engine), replace piston pin with an oversize pin and recheck clearance. Ensure pin-to-piston clearance is within specification. Replace piston if necessary.
  2. Inspect connecting rod for cracks, wear and heat damage. Replace as necessary. Measure piston pin diameter and connecting rod small end piston pin bore. Piston pin-to-connecting rod clearance is difference between the 2 measurements. See CONNECTING ROD  under ENGINE SPECIFICATIONS. If pin-to-rod clearance is greater than specification or service limit (H22A4 or 2.3L engine), replace connecting rod and recheck clearance.
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