Valve Guides, Checking

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Special tools and workshop equipment required

Dial Indicator Holder:VW387

Fig 1: Dial Gauge Holder
Courtesy of AUDI OF AMERICA, LLC
Dial Indicator - 0-10mm:VAS 6079

Fig 2: Dial Gauge
Courtesy of AUDI OF AMERICA, LLC

Procedure

If the valve is replaced during a repair, use a new valve for measurement.
Only use an intake valve in the intake valve guide and an exhaust valve in the exhaust valve guide.

-- Secure the Dial Gauge - 0-10mm:VAS 6079 on the cylinder head with the Dial Gauge Holder:VW 387 as shown.

Fig 3: Identifying Dial Gauge With Holder

Courtesy of AUDI OF AMERICA, LLC

-- Place the valve in the valve guide.

Valve stem tip must seal with the valve guide.

-- Determine the tilting clearance.

Wear limit: 0.8 mm

-- If the wear limit is exceeded, measure using new valves.

-- Replace the cylinder head if the wear limit is still exceeded. (The valve guides cannot be replaced.)