Cylinder Head Assembly

SPECIFICATIONS - 4.7L ENGINE











TORQUE






Cylinder Head Tightening Sequence






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.






6. Tighten the bolts in sequence using the following steps and torque values:
- Step 1: Tighten bolts 1-10, 20 Nm (15 ft. lbs.).
- Step 2: Tighten bolts 1-10, 47 Nm (35 ft. lbs.). Tighten bolts 11-14, 25 Nm (18 ft. lbs.).
- Step 3: Tighten bolts 1-10, 90 degrees. Tighten bolts 11-14, 30 Nm (22 ft. lbs.).

Intake Manifold Tightening Sequence

Install the ignition coils (1,2) and manifold retaining bolts and torque from the center bolts, moving front to back in a crisscross pattern to 12Nm (106 in. lbs.).

Camshaft Bearing Cap and Torque Sequence






1. Install the camshaft bearing caps, hand tighten the retaining bolts.
2. Working in 1/2 turn increments, tighten the bearing cap retaining bolts following the torque sequence.
3. Tighten the camshaft bearing cap retaining bolts to 11 Nm (100 in. lbs.).

Exhaust Manifold Torque and Sequence

Tighten all manifold bolts starting at center and working outward to 25 Nm (18 ft. lbs.).