Valve Spring: Service and Repair

Valve Stem Oil Seal and Valve Spring Replacement

Special Tools

* EN-36017 - Valve Guide Seal Remover

* EN-43649 - Valve Spring Compressor

* EN-43653 - Flywheel Holding Tool

For equivalent regional tools, refer to Special Tools Special Tools.

Removal Procedure

1. Remove the starter. Refer to Starter Replacement Service and Repair.

2. Remove the exhaust camshaft. Refer to Exhaust Camshaft Replacement Exhaust Camshaft Replacement.

3. Remove the intake camshaft. Refer to Intake Camshaft Replacement Intake Camshaft Replacement.

4. Install the EN-43653 - holding tool.

5. Remove the valve rocker arms. Refer to Valve Rocker Arm Replacement Service and Repair.

6. Remove the spark plugs. Refer to Spark Plug Replacement Service and Repair.





7. Install the EN-43649 - compressor (1) to the cylinder head.

8. Install an air hose adapter into the spark plug hole.

9. Attach an air hose to the adapter and pressurize the cylinder to 6.9 bar (100 psi).

10. Compress the valve spring using the valve spring compressor (2).





11. Remove the valve spring keys (1)

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





13. Use the EN-36017 - remover (2) to remove the valve seal (1).

Installation Procedure





1. Use the EN-36017 - remover (2) to install a NEW valve seal (1).





2. Install the valve spring retainer (2) and the valve spring (3) to the valve (5).





3. Compress the valve spring using the valve spring compressor (2).

4. Install the valve spring keys.

5. Disconnect the air hose and remove the air hose adapter from the spark plug hole.

6. Remove the EN-43649 - compressor.

7. Install the spark plugs. Refer to Spark Plug Replacement Service and Repair.

8. Remove the EN-43653 - holding tool.

9. Install the valve rocker arms. Refer to Valve Rocker Arm Replacement Service and Repair.

10. Install the intake camshaft. Refer to Intake Camshaft Replacement Intake Camshaft Replacement.

11. Install the exhaust camshaft. Refer to Exhaust Camshaft Replacement Exhaust Camshaft Replacement.

12. Install the starter. Refer to Starter Replacement Service and Repair.