Valve Guide: Service and Repair

Fig. 29 Valve guide & guide bore oversizes:

1. Press old valve guide from cylinder head toward lower surface using pushrod from valve guide replacement kit, tool No. MD998115 and a suitable press.
2. Ream each valve guide bore in cylinder head to the O.D. of replacement valve guide, Fig. 29.
3. Press fit new valve guide into top of cylinder head using tool No. MD998115. This tool installs valve guide to a predetermined height. If a standard size valve guide has been removed, replacement valve guide should be oversized. New valve guide should be installed at room temperature.
4. After installation of new valve guides, insert valve and check for proper clearance. If clearance is not correct, ream guide until proper clearance is obtained. Refer to ``Valve Specifications'' for stem to guide clearance.