Volkswagen Workshop Service and Repair Manuals > Golf Mk4 > Power unit | 4-cylinder injection engine (5-valve) | Engine cylinder head, valve gear | Repairing valve gear

Renewing valve stem seals

(with cylinder head installed)

Special tools and workshop equipment required

t	Torque wrench -V.A.G 1331- (5...50 Nm)

t	Torque wrench -V.A.G 1332- (40...200 Nm)

t	Spark plug spanner -3122 B-

t	Valve stem seal puller -3364-

t	Pressure hose -VW 653/3-

t	Valve spring tool -3362-

t	Valve stem seal fitting tool -3365-

Removing

–	Remove camshafts → Chapter.

–	Remove bucket tappets and place them with the contact surface downwards. When doing this, ensure that tappets are not interchanged.

–	Remove spark plugs using spark plug spanner -3122 B-.

–	Set piston of respective cylinder to “bottom dead centre”.

–	Screw pressure hose -VW 653/3- into spark plug thread.

–	Insert thrust piece -3362/1- into hold down tool for valve springs -3362-.

–	Mount hold down tool for valve springs -3362- on cylinder head with the tool's own securing bolts.

–	Bring hold down tool for valve springs into following positions:

Outer inlet valve: lower position

Middle inlet valve: upper position

Exhaust valve: lower position

–	Connect pressure hose -VW 653/3- to compressed air system supplying at least 6 bar and remove valve springs.

–	Pull valve stem seals off using valve stem seal puller -3364-.

Installing

–	To prevent damage to new valve stem seals, place plastic sleeve -A- on valve stem.

–	Oil valve stem seal -B-, place it in valve stem seal fitting tool -3365- and push carefully onto valve guide.

Further assembly is basically the reverse of the dismantling procedure.

Volkswagen Workshop Service and Repair Manuals