Valves

Removal

PROCEDURE

1. Remove the cylinder head.

2. Remove the camshaft.

Caution: If old valvetrain parts are to be reinstalled, install them in their original positions. To avoid mixing up parts, it is recommended to prepare a special place for laying out the parts.

3. Remove the bucket tappets and lay them out in their installed order.

4. Remove the valve springs. To remove the split collets and valves together with the springs, use a special valve spring compressor.

5. Compress the valve springs and remove the split collets.

6. Loosen and remove the valve spring compressor.

7. Remove the valve.

8. Remove the upper spring retainer, springs and lower spring seats.

9. Remove the valve stem oil seals.

Installation

PROCEDURE

1. If old valves and the old cylinder head are being installed, check the valve guides before assembly.

2. If new valves are installed in the old cylinder head, machine the valve seats in the cylinder head and lap the valves.

3. Clean the valves of carbon deposits using a scraper and wire brush.

4. Lubricate all bucket tappets with engine oil and insert them into their respective bores.

5. Install the camshaft.

6. Replace the cylinder head gasket and install the cylinder head.

7. If necessary, adjust the valve clearance.