Valve Clearance: Adjustments

STANDARD PROCEDURE - MEASURING VALVE LASH






NOTE: The engine must be cold to measure valve lash.

1. Remove engine cover.
2. Remove cylinder head coverCylinder Head Cover(s) - Removal.





3. Rotate camshaft so lobes are vertical (1).
4. Check clearance using feeler gauges.
5. Repeat for all tappets and record readings.
6. If clearance was too small, refer to the Clearance too Small procedure. Clearance too Small.
7. If clearance was too large, refer to the Clearance too Large procedure. Clearance too Large.

Clearance too Small





1. Remove camshaftsCamshaft - Removal.
2. Specification - clearance = change.
3. Decrease tappet thickness by change figure.
4. Install camshafts Camshaft - Installation.
5. Verify that valve lash is correct.

Clearance too Large





1. Remove camshaftsCamshaft - Removal.
2. Clearance - specification = change.
3. Increase tappet thickness by change figure.
4. Install camshaftsCamshaft - Installation.
5. Verify that valve lash is correct.