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 MANUALSJEEP2009PATRIOT 2WD L4-2.4LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON RING, ENGINE
2009 Jeep Patriot 2WD L4-2.4L
Piston Ring, Engine
2009 Jeep Patriot 2WD L4-2.4LSECTION Piston Ring, Engine
PISTON RINGS
Ring Gap:
Top Compression Ring 0.15 - 0.30 mm (0.0059 - 0.0118 in.)
Wear Limit 0.8 mm (0.031 in.)
2nd Compression Ring 0.30 - 0.45 mm (0.0118 - 0.0177 in.)
Wear Limit 0.8 mm (0.031 in.)
Oil Control Steel Rails 0.20 - 0.70 mm (0.0079 - 0.0276 in.)
Wear Limit 1.0 mm (0.039 in.)
Ring Side Clearance:
Compression Rings 0.03 - 0.07 mm (0.1182 - 0.0028 in.)
Wear Limit 0.10 mm (0.004 in.)
Oil Ring Pack 0.06 - 0.15 mm (0.0024 - 0.0059 in.)
Ring Gap:
Top Compression Ring 0.15 - 0.30 mm (0.0059 - 0.0118 in.)
Wear Limit 0.8 mm (0.031 in.)
2nd Compression Ring 0.30 - 0.45 mm (0.0118 - 0.0177 in.)
Wear Limit 0.8 mm (0.031 in.)
Oil Control Steel Rails 0.20 - 0.70 mm (0.0079 - 0.0276 in.)
Wear Limit 1.0 mm (0.039 in.)
Ring Side Clearance:
Compression Rings 0.03 - 0.07 mm (0.1182 - 0.0028 in.)
Wear Limit 0.10 mm (0.004 in.)
Oil Ring Pack 0.06 - 0.15 mm (0.0024 - 0.0059 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.