Camshaft: Service and Repair

REMOVAL
1. Remove cylinder head cover using procedure outlined in this section.
2. Remove timing belt, timing belt tensioner, camshaft sprockets, and timing belt covers.

Camshaft Bearing Cap Identification:

3. Bearing caps are identified for location. Remove the outside bearing caps first.

Camshaft Bearing Cap-Removal:

4. Loosen the camshaft bearing cap attaching fasteners in sequence shown one camshaft at a time.

CAUTION: Camshafts are not interchangeable. The intake cam number 6 thrust bearing face spacing is wider.

5. Identify the camshafts before removing from the head. The camshafts are not interchangeable.

CAMSHAFT END PLAY
1. Oil camshaft journals and install camshaft WITHOUT cam follower assemblies. Install rear cam caps and tighten screws to specified torque.

Camshaft End Play:

2. Mount dial indicator C-3339 or equivalent, to a stationary point on cylinder head.
3. Using a suitable tool, move camshaft to rearward limits of travel.
4. Zero the dial indicator.
5. Move camshaft forward to limits of travel and read dial indicator.
6. End play travel: 0.05 - 0.15 mm (0.002 - 0.06 inch).

INSTALLATION

NOTE: Check camshaft for binding in cylinder head. Inspect camshaft bearing journals for damage. If camshafts are binding, also check the cylinder head bearing surface for damage, and check the camshaft bearing oil feed holes in the cylinder head for clogging.

Check the cam surface for abnormal wear and damage, replace if defective. A visible worn groove in the roller follower or on the cam lobes is cause for replacement.

CAUTION: Ensure that NONE of the pistons are at top dead center when installing the camshafts.

Camshaft Bearing Cap-Tightening Sequence:

1. Lubricate bearing journals and cam followers with clean oil and install the camshafts. Install right and left camshaft bearing caps #2 thru- #5 and right #6. Tighten M6 fasteners to 12 Nm (105 inch lbs.) in sequence shown.

Camshaft Bearing Cap Sealing:

2. Apply Mopar Gasket Maker to No. 1 and No. 6 bearing caps. Install bearing caps and tighten M8 fasteners to 24 Nm (215 inch lbs.).
3. Bearing cap number 1, must be installed before the camshaft seals can be installed.
4. Install rear timing cover, timing belt tensioner, camshaft sprockets, timing belt, and front timing belt covers.
5. Install cylinder head cover using procedure outlined in this section.
6. Perform camshaft and crankshaft timing relearn procedure as follows:
- Step 1: Connect the DRB scan tool to the data link (diagnostic) connector. This connector is located in the passenger compartment, at the lower edge of instrument panel; near the steering column.
- Step 2: Turn the ignition switch on and access the "miscellaneous" screen.
- Step 3: Select re-learn cam/crank option and follow directions on DRB screen.