Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2009HHR L4-2.4LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER BLOCK ASSEMBLYPISTON RINGSPECIFICATIONS
2009 Chevrolet HHR L4-2.4L
Piston Ring: Specifications
2009 Chevrolet HHR L4-2.4LSECTION Specifications
PISTON RING END GAP
First Compression Ring 0.15-0.30 mm (0.006-0.012 in)
Second Compression Ring 0.20-0.45 mm (0.008-0.018 in)
Oil Control Ring - Rails 0.15-0.65 mm (0.006-0.026 in)
PISTON RING TO GROOVE CLEARANCE
First Compression Ring 0.04-0.08 mm (0.0015-0.0031 in)
Second Compression Ring 0.030-0.070 mm (0.0012-0.0030 in)
Oil Control Ring 0.058-0.207 mm (0.0023-0.0081 in)
First Compression Ring 0.15-0.30 mm (0.006-0.012 in)
Second Compression Ring 0.20-0.45 mm (0.008-0.018 in)
Oil Control Ring - Rails 0.15-0.65 mm (0.006-0.026 in)
PISTON RING TO GROOVE CLEARANCE
First Compression Ring 0.04-0.08 mm (0.0015-0.0031 in)
Second Compression Ring 0.030-0.070 mm (0.0012-0.0030 in)
Oil Control Ring 0.058-0.207 mm (0.0023-0.0081 in)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.