Volkswagen Golf Service & Repair Manual: Checking valve guides

Volkswagen Golf Service & Repair Manual / 4- cylinder injection engine(1.4 1 direct inction. turbocharger) / Engine cylinder head, valve gear / Inlet and exhaust valves / Checking valve guides

Special tools and workshop equipment required

Universal dial gauge bracket -VW 387-

Checking valve guides

Dial gauge -VAS 6079-

Checking valve guides

Test procedure

–	Insert valve in guide. Valve stem end must be flush with guide. Due to the differing stem diameters, only use inlet valves with inlet valve guides and exhaust valves with exhaust valve guides.

–	Determine rock.

Wear limit: 0.5 mm.

–	If the wear limit is exceeded, repeat the measurement with new valves.

–	Renew cylinder head if wear limit is still exceeded.

Note

Valve guides cannot be exchanged.

Checking valve guides

Checking valves

–	Check for scoring on valve stems and valve seat surfaces.

–	Exchange valve if significant scoring can be seen.

Inlet and exhaust valves

...

Valve dimensions

Note Inlet and exhaust valves must not be reworked. Only lapping-in is permitted. ...

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