Cylinder Head Assembly

Specifications - 3.7L ENGINE











Torque






Cylinder Head Torque and 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 the bolts should be replaced.






Tighten the bolts in sequence using the following steps and torque values:
- Step 1: Tighten bolts 1-8, 27 Nm (20 ft. lbs.).
- Step 2: Verify that bolts 1-8, all reached 27 Nm (20 ft. lbs.), by repeating step 1 without loosening the bolts. Tighten bolts 9 thru 12 to 14 Nm (10 ft. lbs.).
- Step 3: Tighten bolts 1-8, 90 degrees.
- Step 4: Tighten bolts 1-8, 90 degrees, again. Tighten bolts 9-12, 26 Nm (19 ft. lbs.)

Intake Manifold Torque and Tightening Sequence






Install the intake manifold retaining bolts and tighten in sequence shown to 12 Nm (105 in. lbs.).

Camshaft Bearing Cap and Torque Sequence






1. Install the camshaft bearing caps, hand tighten the retaining bolts.

NOTE: Caps should be installed so that the stamped numbers on the caps are in numerical order, (1 through 4) from the front to the rear of the engine. All caps should be installed so that the stamped arrows on the caps point toward the front of the engine.

2. Working in 1/2 turn increments, tighten the bearing cap retaining bolts starting with the middle cap working outward.
3. Tighten the camshaft bearing cap retaining bolts to 11 Nm (100 in. lbs.).

Exhaust Manifold Torque and Sequence

Starting at the center arm and working outward, tighten the bolts and nuts to 25 Nm (18 ft. lbs.).