9 - 36 2.2/2.5L ENGINES

CAMSHAFTS SERVICE

Cylinder Head must be removed from vehicle. Refer to cylinder head removal for procedure.

REMOVAL

(1)Mark rocker arms shafts for reinstallation in the same position (Fig. 1).

(2)Remove rocker arm assembly attaching bolts in sequence (Fig. 1).

(3)Remove thrust plates from rear of camshafts (Fig. 2). The intake camshaft uses a wider thrust plate than exhaust camshaft.

CAUTION: Thrust plates are not the same thickness and cannot be interchanged.

Fig. 1 Rocker Arm Shaft Removal Sequence

Fig. 2 Camshaft Thrust Plates

(4)Before camshaft can be removed from cylinder head the cam seal must be removed first. Be careful not to damage seal surface of the camshaft.

(5)Using a screwdriver place it against the side of the cam lobe push the cam out of the head. The cam seal will be pushed out by the cam (Fig. 3).

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(6) Slide the camshaft out of the cylinder head. Be careful not scratch the bearing surfaces in the head (Fig. 4).

CAUTION: Intake and Exhaust camshafts are not interchangeable.

Fig. 3 Removing Camshaft Oil Seal

Fig. 4 Camshaft−Removal or Installation

INSPECTION

Camshaft lobe wear should not exceed .25mm (.010 inch). To measure cam lobe wear (Fig. 4), measure lobe diameter in two places at the largest diameter (over the nose). Take first reading with micrometer in unworn area at the edge of the lobe. Take second reading in the worn area where rocker arm contacts the lobe. Subtract second reading from the first. The difference is the cam lobe wear.

INSTALLATION

(1) Lubricate camshaft journals with clean engine oil. Carefully install camshaft into the head.

CAUTION: Camshafts are not interchangeable. The intake cam has a wider thrust plate groove.