Volkswagen Workshop Service and Repair Manuals > Polo Mk3 > Power unit | 4-cylinder injection engine (2-valve), mechanics | Engine cylinder head, valve gear | Repairing valve gear | Reworking valve seats | Reworking exhaust valves for engine codes ADX, AEA, AEE, AER, AEX, AKV, ALL, ANX, APQ

Reworking exhaust valves for engine codes ADX, AEA, AEE, AER, AEX, AKV, ALL, ANX, APQ

a	AER, ALL = Ø 24.8 mm
a	ADX, AEA, AEE, AEX, AKV, ANX, APQ = Ø 27.8 mm
b	= max. permissible reworking dimension → Note
c	= max. 2.0 mm
Z	= bottom surface of cylinder head
α	= 45 ° valve seat angle
β	= 30 ° upper correction angle
γ	= 60 ° lower correction angle

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