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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSJEEP2009COMMANDER 2WD V8-4.7L FLEX FUELREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLY
2009 Jeep Commander 2WD V8-4.7L Flex Fuel
Cylinder Head Assembly
2009 Jeep Commander 2WD V8-4.7L Flex FuelSECTION Cylinder Head Assembly
Cylinder Head Torque
Tighten bolts 1 - 10 27 Nm (20 ft. lbs.).
Verify that bolts 1 - 10 have all reached 27 Nm (20 ft. lbs.), by repeating step 1 without loosening the bolts.
Tighten bolts 11 - 14 14 Nm (89 in. lbs.).
Rotate bolts 1 - 10 an additional 90°.
Rotate bolts 1 - 10 an additional 90° again.
Tighten bolts 11 - 14 26 Nm (19 ft. lbs).
Head Bolt Reuse/Replace
The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts should be replaced.
Surface Variation - Warpage
Cylinder Head Warpage (Flatness) 0.0508 mm (0.002 in.)
Intake Manifold
Intake Manifold Bolts 12 Nm (105 in.lbs.)
Camshaft Bearing Cap
Camshaft Bearing Cap Bolts 11 Nm (100 in.lbs.)
Camshaft Sprocket
Camshaft Sprocket Bolt 122 Nm (90 ft.lbs.)
Exhaust Manifold
Left Side
Right Side
Exhaust Manifold Bolts 25 Nm (18 ft.lbs.)
Tighten bolts 1 - 10 27 Nm (20 ft. lbs.).
Verify that bolts 1 - 10 have all reached 27 Nm (20 ft. lbs.), by repeating step 1 without loosening the bolts.
Tighten bolts 11 - 14 14 Nm (89 in. lbs.).
Rotate bolts 1 - 10 an additional 90°.
Rotate bolts 1 - 10 an additional 90° again.
Tighten bolts 11 - 14 26 Nm (19 ft. lbs).
Head Bolt Reuse/Replace
The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts should be replaced.
Surface Variation - Warpage
Cylinder Head Warpage (Flatness) 0.0508 mm (0.002 in.)
Intake Manifold
Intake Manifold Bolts 12 Nm (105 in.lbs.)
Camshaft Bearing Cap
Camshaft Bearing Cap Bolts 11 Nm (100 in.lbs.)
Camshaft Sprocket
Camshaft Sprocket Bolt 122 Nm (90 ft.lbs.)
Exhaust Manifold
Left Side
Right Side
Exhaust Manifold Bolts 25 Nm (18 ft.lbs.)
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.