Removal and Replacement

CAMSHAFT

REMOVAL
1. Remove cylinder head cover.
2. Remove camshaft position sensor and camshaft target magnet.
3. Remove timing belt.
4. Remove camshaft sprockets and timing belt rear cover.

Fig. 21:

5. Bearing caps are identified for location. Remove the outside bearing caps first (Fig. 21).

Fig. 22:

6. Loosen the camshaft bearing cap attaching fasteners in sequence shown (Fig. 22) one camshaft at a time.

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

7. Identify the camshafts before removing from the head. The camshafts are not interchangeable.
8. Remove camshafts from cylinder head.

NOTE: If removing rocker arms, identify for reinstallation in the original position.

CLEANING
Clean camshaft with a suitable solvent.

INSPECTION

Fig. 23:

1. Inspect camshaft bearing journals for damage and binding (Fig. 23). If journals are binding, check the cylinder head for damage. Also check cylinder head oil holes for clogging.
2. Check the cam lobe and bearing surfaces for abnormal wear and damage. Replace camshaft if defective.

NOTE: If camshaft is replaced due to lobe wear or damage, always replace the rocker arms.

3. Measure the lobe actual wear (unworn area wear zone = actual wear) (Fig. 23) and replace camshaft if out of limit. Standard value is 0.0254 mm (0.001 inch), wear limit is 0.254 mm (0.010 inch).

INSTALLATION

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

1. Lubricate all camshaft bearing journals, rocker arms and camshaft lobes.
2. Install all rocker arms in original positions, if reused.

Fig. 24:

3. Position camshafts on cylinder head bearing journals. Install right and left camshaft bearing caps No. 2 - 5 and right No. 6. Tighten M6 fasteners to 12 Nm (105 inch lbs.) in sequence shown in (Fig. 24).

Fig. 25:

4. Apply Mopar Gasket Maker to No. 1 and No. 6 bearing caps (Fig. 25). Install bearing caps and tighten M8 fasteners to 28 Nm (250 inch lbs.).

NOTE: Bearing end caps must be installed before seals can be installed.

5. Install camshaft oil seals.
6. Install camshaft target magnet and camshaft position sensor.
7. Install cylinder head cover.
8. Install timing belt rear cover and camshaft sprockets.
9. Install timing belt.