Inlet and Exhaust Valves - Remove and Install

Removal Procedure

Remove the cylinder head.

Clean the bottom face of the cylinder head. Check the depth of the valves below the face of the cylinder head before the valve springs are removed.

Place a temporary identification mark on the heads of the valves in order to identify the correct position.

Inlet valves have a recess in the center of the head.

Use a suitable lifting device to position the cylinder head with the valve springs upward. The weight of the cylinder head is approximately 65 kg (143 lb). Ensure that the cylinder head is kept on a clean, soft surface in order to prevent damage to the machined face.

Install Tooling in position on the cylinder head in order to compress the appropriate valve spring (3).

Apply sufficient pressure to Tooling in order to remove the valve keepers (1).

Slowly release the pressure on Tooling.

Remove the valve spring retainer (2). Remove the valve spring (3).

Repeat steps for the remaining valves. Remove Tooling. Remove the valve stem seals (4). Use a suitable lifting device to carefully turn over the cylinder head. Remove the valves (5).

Installation Procedure

Clean all components of the cylinder head assembly. Ensure that all ports, all coolant passages and all lubrication passages in the cylinder head are free from debris. Follow Steps to inspect the components of the cylinder head assembly. Replace any components that are worn or damaged.

Inspect the cylinder head for wear and for damage.

Inspect the valve seats for wear and for damage.

Inspect the valve guides for wear and for damage.

Inspect the valves for wear and for damage.

Inspect the valve springs (3) for damage and for the correct length.

Lubricate the stems of the valves (5) with clean engine oil. Install the valves (5) in the appropriate positions in the cylinder head. Check the depth of the valves below the face of the cylinder head.

Use a suitable lifting device to carefully turn over the cylinder head. The weight of the cylinder head is approximately 65 kg (143 lb). Ensure that all of the valves remain in place.

Install new valve stem seals (4) onto each of the valve guides.

Install the valve spring (3) onto the cylinder head. Position the valve spring retainer (2) on the valve spring (3).

Install Tooling in the appropriate position on the cylinder head in order to compress the valve spring (3).

Apply sufficient pressure to Tooling in order to install the valve keepers (1).

Carefully release the pressure on Tooling. Repeat steps for the remaining valves. Remove Tooling from the cylinder head.

Use a suitable lifting device to position the cylinder head on a support. Ensure that the heads of the valves are not obstructed. Gently strike the top of the valves with a soft hammer in order to ensure that the valve keepers (1) are properly installed. Install the cylinder head.