Valve Guide: Service and Repair

1. Mount cylinder head on fixture 5363. Adjust angle of inclination using holes at top of fixture ends. Clamp head to fixture using locating hole No. 2 on face. Use four sleeves as spacers for cylinder head bolts.
2. Using drift 5364, slowly press guide until drift bears against valve spring seat, then using drift 5365, slowly press guide until drift bears against valve seat. Remove valve guide and inspect upper section of guide bore.
3. Place new guide on drift 999 5505 and slowly press guide into head until drift bears against valve spring seat. Top of guide should project by 0.50-.52 inch. Press force must be at least 2025 lbs. If press force is lower, guide must be removed and reamed out for fitting oversized guide.
4. Ream guide using reamer 999 5373 from combustion chamber side, then grind valve and seat after replacing guide.