Valve Guide: Service and Repair

REPLACE VALVE GUIDE BUSHINGS

(a) Gradually heat the cylinder head to 80 - 100°C (176 - 212°F).

(b) Using Special Service Tool (SST) Valve Guide Bushing Remover & Replacer 5.5 # 09201-01055, Handle Set # 09950-70010 (Handle 100 # 09951-07100) or equivalents and a hammer, tap out the guide bushing.

(d) Select a new guide bushing (Standard or O/S 0.05).
If the bushing bore diameter of the cylinder head is greater than 10.313 mm (0.4060 inch), machine the bushing bore to the following dimension: 10.345 - 10.363 mm (0.4073 - 0.4080 inch)
If the bushing bore diameter of the cylinder head is greater than 10.363 mm (0.4080 inch), replace the cylinder head.

NOTE: Different bushings are used for the intake and exhaust.

(e) Gradually heat the cylinder head to 80 - 100°C (176-212°F).

(f) Using SST and a hammer, tap in a new guide bushing to the specified protrusion height.
Protrusion height:
Intake: 11.5 - 11.3 mm (0.437 - 0.453 inch)
Exhaust: 8.9 - 9.3 mm (0.350 - 0.366 inch)

(h) Using a sharp 5.5 mm reamer, ream the guide bushing to obtain the standard specified clearance between the guide bushing and valve stem.