A6 Quattro Wagon V6-3.0L (AVK) (2002)
Valve Guide: Testing and Inspection
Valve guides, checking
Special Tools and Equipment
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VW387 dial gauge holder
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Dial gauge
Test sequence
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Insert valve into guide. Valve stem tip must seal with guide. Due to differences in valve stem diameter, make sure that only intake valves are used
to check intake guides, and only exhaust valves are used to check exhaust guides.
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Measure side play.
Wear limit
Notes:
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If wear limit is exceeded, remeasure using new valves. If wear limit is still exceeded' replace cylinder head. Valve guides cannot be replaced.
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If valve is replaced during repair, use new valve for measurement.