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 MANUALSJEEP2009COMMANDER 4WD V8-4.7LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYCRANKSHAFT MAIN BEARING
2009 Jeep Commander 4WD V8-4.7L
Crankshaft Main Bearing
2009 Jeep Commander 4WD V8-4.7LSECTION Crankshaft Main Bearing
Crankshaft Main Bearing
Main Bearing Journal Diameter 63.488 - 63.512 mm (2.4996 - 2.5005 in.)
Bearing Clearance 0.004 - 0.034 mm (0.0002 - 0.0013 in.)
Out of Round (MAX) 0.005 mm (0.0004 in.)
Taper (MAX) 0.008 mm (0.0004 in.)
End Play 0.052 - 0.282 mm (0.0021- 0.0112 in.)
End Play (MAX) 0.282 mm (0.0112 in.)
Main Bearing Cap Torque
Tighten bolts 3 Nm (26 in. lbs.)
Tighten bolts 54 Nm (40 ft. lbs.)
Rotate bolts 90°
Tighten bolts 23 Nm (20 ft. lbs.)
Main Bearing Selection Chart
Main Bearing Journal Diameter 63.488 - 63.512 mm (2.4996 - 2.5005 in.)
Bearing Clearance 0.004 - 0.034 mm (0.0002 - 0.0013 in.)
Out of Round (MAX) 0.005 mm (0.0004 in.)
Taper (MAX) 0.008 mm (0.0004 in.)
End Play 0.052 - 0.282 mm (0.0021- 0.0112 in.)
End Play (MAX) 0.282 mm (0.0112 in.)
Main Bearing Cap Torque
Tighten bolts 3 Nm (26 in. lbs.)
Tighten bolts 54 Nm (40 ft. lbs.)
Rotate bolts 90°
Tighten bolts 23 Nm (20 ft. lbs.)
Main Bearing Selection Chart
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.