Engine Torque Specifications

2009 Jeep Commander 4WD V8-4.7LSECTION Engine Torque Specifications





TORQUE






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 (2) the bolts should be replaced.

Intake Manifold





Camshaft Bearing Cap





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.)

Flex Plate





Oil Pump





Exhaust Manifold




Left Side




Right Side

Water Pump




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.