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 MANUALSJEEP2009WRANGLER 2WD V6-3.8LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYCRANKSHAFT, ENGINE
2009 Jeep Wrangler 2WD V6-3.8L
Crankshaft, Engine
2009 Jeep Wrangler 2WD V6-3.8LSECTION Crankshaft, Engine
CRANKSHAFT
Main Bearing Journal Diameter 63.987-64.013 mm (2.5192-2.5202 in.)
Journal Out-of-Round (Max.) 0.005 mm (0.0002 in.)
Journal Taper (Max.) 0.003 mm (0.0001 in)
End Play 0.09-0.24 mm (0.0036-0.0095 in.)
Wear Limit 0.381 mm (0.015 in.)
Main Bearing Diametrical Clearance 1-2-3-4 0.011-0.055 mm (0.0005-0.0022 in.)
Wear Limit 0.076 mm (0.003 in.)
Bearing shells are available in standard and the following undersizes: 0.025 mm (0.001 in.) and 0.254 mm (0.010 in).
Main Bearing Journal Diameter 63.987-64.013 mm (2.5192-2.5202 in.)
Journal Out-of-Round (Max.) 0.005 mm (0.0002 in.)
Journal Taper (Max.) 0.003 mm (0.0001 in)
End Play 0.09-0.24 mm (0.0036-0.0095 in.)
Wear Limit 0.381 mm (0.015 in.)
Main Bearing Diametrical Clearance 1-2-3-4 0.011-0.055 mm (0.0005-0.0022 in.)
Wear Limit 0.076 mm (0.003 in.)
Bearing shells are available in standard and the following undersizes: 0.025 mm (0.001 in.) and 0.254 mm (0.010 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.