Valve Guide: Service and Repair
VALVE GUIDE REPLACEMENTWhen valve Guide is removed. replace with oversized [0.2 mm (0.008 inch)] valve Guide.
1. To remove valve guide, heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in heated oil.
2. Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US ton,2.0 Imp ton) pressure] or a hammer and the valve guide drift (commercial service tool).
CAUTION: Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.
3. Using the valve guide reamer (commercial service tool), ream cylinder head valve guide hole. Valve guide hole diameter (for service parts):
Intake and exhaust: 10.175 - 10.196 mm (0.4006 - 0.4014 inch)
4. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in heated oil.
5. Using the valve guide drift (commercial service tool), press valve guide from camshaft side to the dimensions as in the figure.
Projection "L"
Intake and exhaust: 12.6 - 12.8 mm (0.496 - 0.504 inch)
CAUTION: Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.
6. Using the valve guide reamer (commercial service tool), apply reamer finish to valve guide.
Standard:
Intake and exhaust: 6.000 - 6.018 mm (0.2362 - 0.2369 inch)