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.
2009 Jeep Liberty 4WD V6-3.7LFACTORY OEM SERVICE PROCEDURE
System Specifications
Surface Variation - Head-to-block
Cylinder Head For Out-of-flatness 0.0508 mm (0.002 in.)
Cylinder Bore
Cylinder Bore Diameter 93.013 ± 0.0075 mm (3.6619 ± 0.0003 in.)
Taper (MAX) 0.051 mm (0.002 in.)
Out of Round (MAX) 0.076 mm (0.003 in.)
Crankshaft
Crankshaft Main Bearing Selection
Main Bearing Cap
Hand tighten bolts 1D,1G and 1F until the bedplate contacts the block.
Tighten bolts 1A - 1J 54 Nm (40 ft. lbs.)
Tighten bolts 1 - 8 7 Nm (5 ft. lbs.)
Turn bolts 1 - 8 an additional 90°.
Tighten bolts A - E 27 Nm ( 20 ft. lbs.)
CONNECTING RODS
Piston Dimensions and Clearances
PISTONS
PISTON PINS
PISTON RINGS
Crankshaft Pulley
Crankshaft Damper Bolt 175 Nm (130 ft. lbs.)
Cylinder Head For Out-of-flatness 0.0508 mm (0.002 in.)
Cylinder Bore
Cylinder Bore Diameter 93.013 ± 0.0075 mm (3.6619 ± 0.0003 in.)
Taper (MAX) 0.051 mm (0.002 in.)
Out of Round (MAX) 0.076 mm (0.003 in.)
Crankshaft
Crankshaft Main Bearing Selection
Main Bearing Cap
Hand tighten bolts 1D,1G and 1F until the bedplate contacts the block.
Tighten bolts 1A - 1J 54 Nm (40 ft. lbs.)
Tighten bolts 1 - 8 7 Nm (5 ft. lbs.)
Turn bolts 1 - 8 an additional 90°.
Tighten bolts A - E 27 Nm ( 20 ft. lbs.)
CONNECTING RODS
Piston Dimensions and Clearances
PISTONS
PISTON PINS
PISTON RINGS
Crankshaft Pulley
Crankshaft Damper Bolt 175 Nm (130 ft. lbs.)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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