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.DBβ LIVE
HOMESERVICE MANUALSJEEP2009COMMANDER 4WD V8-4.7LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER HEAD ASSEMBLYSERVICE AND REPAIRREMOVAL AND REPLACEMENTCYLINDER HEAD - INSTALLATIONRIGHT CYLINDER HEAD
2009 Jeep Commander 4WD V8-4.7L
Right Cylinder Head
2009 Jeep Commander 4WD V8-4.7LSECTION Right Cylinder Head
INSTALLATION
NOTE: 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 (2) the bolts should be replaced.
Necking (2) can be checked by holding a straight edge against the threads. If all the threads do not contact the scale (2), the bolt should be replaced.
CAUTION: When cleaning cylinder head and cylinder block surfaces, DO NOT use a metal scraper (1), high speed scotch brite (2) or rolock tool (3) because the surfaces could be cut or ground. Use only a wooden or plastic scraper (4).
1. Clean the cylinder head and cylinder block mating surfaces.
2. Position the new cylinder head gasket on the locating dowels.
CAUTION: When installing cylinder head, use care not damage the tensioner arm or the guide arm.
3. Position the cylinder head onto the cylinder block. Make sure the cylinder head seats fully over the locating dowels.
NOTE: The four M8 cylinder head mounting bolts (11 - 14) require sealant to be added to them before installing. Failure to do so may cause leaks.
4. Lubricate the cylinder head bolt threads with clean engine oil and install the ten M10 bolts.
5. Coat the four M8 cylinder head bolts with Mopar(R) Thread Sealant with PTFE then install the bolts.
NOTE: The cylinder head bolts are tightened using an angle torque procedure.
6. Tighten the bolts in sequence using the following steps and torque values:
- Tighten bolts 1 - 10 to 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 to 14 Nm (89 in. lbs.).
- Rotate bolts 1 - 10 an additional 90°.
- Rotate bolts 1 - 10 an additional 90° again.
- Tighten bolts 11 - 14 to 26 Nm (19 ft. lbs).
7. Position the secondary chain onto the camshaft drive gear, making sure one marked chain link is on either side of the V8 mark on the gear (2) and position the gear onto the camshaft.
8. Install the camshaft drive gear retaining bolt.
9. Install the right side secondary chain guide Engine Timing Cover(s) - Installation.
10. Install the right side cylinder head access plug (1).
11. Re-set and install the right side secondary chain tensioner.
12. Remove Secondary Camshaft Chain Holder 8429 (6).
13. Install the timing chain cover Engine Timing Cover(s) - Installation.
14. Install the crankshaft damper Vibration Damper - Installation.
15. Install accessory drive belt.
16. Install the fan shroud.
17. Install the cylinder head cover (1)Cylinder Head Cover(s) - Installation.
18. Install the intake manifold Intake Manifold - Installation.
19. Install oil fill housing onto cylinder head.
20. Refill the cooling systemService and Repair.
21. Raise the vehicle.
22. Drain oil.
23. Install the exhaust pipe onto the right exhaust manifold.
24. Lower the vehicle.
25. Fill with new engine oil.
26. Reconnect battery negative cable.
27. Start the engine and check for leaks.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.