Valve Guide: Service and Repair

Valve Guides Replacing





Cylinder heads in which the valve seat surface can no longer be refaced or cylinder heads that have been refaced down to the minimum resurfacing dimension cannot have any additional repairs or resurfacing.

- Press out worn valve guides from the combustion chamber side using support sleeve 30-23





- Coat the new guides with oil and press into the cylinder head from the camshaft side using tool 3121 and support piece 3123

CAUTION Press in guide up to the shoulder, after the shoulder contacts the cylinder head do not exceed 2000 psi of force or the shoulder will break off.

- Size the inside guide diameter using hand reamer 3120 while liberally applying a cutting/cooling oil
- Reface the valve seat