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Home >> Audi >> 2001 >> allroad Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.7L V6 BITURBO - APB, Bel >> Engine - Cylinder head, Valvetrain >> Valve gear, servicing >> Valve stem seals, replacing >> Reworking valves

Reworking valves

Valves must not be reworked. Only grinding-in (lapping) is permitted.

WARNING: Worn sodium-cooled exhaust valves must be treated as follows before disposal: Saw the valves into two sections with a metal saw at a point between the center of the valve stem and the valve head. The valves must not come into contact with water when this is done. Then throw the valves into a bucket of water (not more than ten at a time) and step back, because a chemical reaction occurs when the sodium filling burns. After this treatment the valves can be disposed of in the normal way.
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