Volkswagen Workshop Service and Repair Manuals > Golf Mk5 > Power unit | 4-cylinder injection engine (1.4 and 1.6 l direct injection) | Engine cylinder head, valve gear | Cylinder head

Checking valve timing

Special tools and workshop equipment required

t	Spark plug socket and extension -3122 B-

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

t	Dial gauge -VAS 6079-

t	Puller -T10094 A-

t	Dial gauge adapter -T10170-

t	Camshaft clamp -T10171-

Test procedure

–	Remove air filter → Chapter.

–	Remove exhaust gas recirculation valve -N18- and unscrew camshaft sealing cover → Chapter.

–	Remove spark plug from No. 1 cylinder. Use puller -T10094 A- and spark plug wrench 3122 B.

–	Screw dial gauge adapter -T10170- into spark plug hole to stop.

–	Screw dial gauge -VAS 6079- and extension -T10170/1- in to stop and lock in position with lock nut -arrow-.

–	Turn crankshaft in direction of engine rotation, to TDC No. 1 cylinder. Note position of small needle on dial gauge.

The holes -arrows- in the camshaft must align as shown. Otherwise turn crankshaft one rotation (360°) further.

Note

t	If crankshaft is turned more than 0.01 mm past TDC, then turn crankshaft back 45° against engine direction of rotation. Then turn crankshaft in direction of engine rotation to TDC No. 1 cylinder.

t	Permissible deviation from TDC No. 1 cylinder: ± 0.01 mm.

–	Insert camshaft clamp -T10171- to stop in camshaft openings.

Locking pins -arrows 1- must engage in holes -arrows 2-. Inscription „TOP“-arrow 3- must be readable from above.

If camshaft clamp -T10171- cannot be fitted into camshaft openings to stop, then timing is incorrect and must be readjusted → Chapter.

Timing is OK if camshaft clamp -T10171- can be fitted into camshaft openings to stop.

Further assembly is basically the reverse of the dismantling sequence. In the process, note the following:

t	Renew oil seals for camshaft sealing cover and oil them before fitting.

t	Install exhaust gas recirculation valve -N18- → Chapter

Volkswagen Workshop Service and Repair Manuals