Xterra SE 2WD V6-3.3L (VG33E) (2002)
Valve Guide: Service and Repair
VALVE GUIDE REPLACEMENT
1. To remove valve guide, heat cylinder head to 150 to 160°C (302 to 320°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 hammer and suitable tool.
3. Ream cylinder head valve guide hole.
Valve guide hole diameter (for service parts):
Intake: ............................................................................................................................................ 11.175 - 11.196 mm (0.4400 - 0.4408 inch)
Exhaust: ........................................................................................................................................... 12.175 - 12.196 mm (0.4793 - 0.4802 inch)
4. Heat cylinder head to 150 to 160°C (302 to 320°F) and press service valve guide onto cylinder head.
Projection "L": .................................................................................................................................................. 13.2 - 13.4 mm (0.520 - 0.528 inch)
5. Ream valve guide.
Finished size:
Intake: ................................................................................................................................................. 7.000 - 7.018 mm (0.2756 - 0.2763 inch)
Exhaust: ............................................................................................................................................... 8.000 - 8.011 mm (0.3150 - 0.3154 inch)