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Home >> Lexus >> 2002 >> GS 300 L6-3.0L (2JZ-GE) >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Cylinder Head Assembly >> Service and Repair >> Disassembly >> Part 2

Part 2















REPLACEMENT
REPLACE VALVE GUIDE BUSHINGS





a. Using SST and a hammer, tap out the guide bushing.
SST 09201-10000 (09201-01060), 09950-70010 (09951-07100)





b. Using a caliper gauge, measure the bushing bore diameter of the cylinder head.





c. Select a new guide bushing (STD or O/S 0.05).
If the bushing bore diameter of the cylinder head is greater than 11.006 mm (0.4333 inch), machine the bushing bore to the following dimension: 11.035 - 11.056 mm (0.4344 - 0.4353 inch)
If the bushing bore diameter of the cylinder head is greater than 11.056 mm (0.4353 inch), replace the cylinder head.





d. Using SST and a hammer, tap in a new guide bushing to the specified protrusion height.
SST 09201-10000 (09201-01060), 09950-70010 (09951-07100)





Protrusion height





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





e. Using a sharp 6 mm reamer, ream the guide bushing to obtain the standard specified clearance between the guide bushing and valve stem.

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