Removal and Replacement

REMOVAL
Camshafts are removed from the rear of each cylinder head. The cylinder head must be removed.
1. Remove camshaft sprocket.
2. Remove cylinder head.
3. Mark the rocker arm and shaft assembly before removal. Remove the rocker arm and shaft assembly from the head.
4. Remove the rear camshaft cover and O-ring from head.

CAUTION: Be careful not to nick or scratch the journals when removing the camshaft.





5. Carefully remove the camshaft from the rear of the cylinder head (Fig. 20).

CLEANING
Clean camshaft with a suitable solvent.

INSPECTION





1. Inspect camshaft bearing journals for damage and binding (Fig. 21). 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 (Fig. 21) 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
1. Lubricate camshaft bearing journals and camshaft lobes with clean engine oil and install camshaft into cylinder head (Fig. 20).
2. Install cylinder head(s).
3. Install the rocker arm assembly.
4. Install camshaft sprockets and timing belt.