Volkswagen Golf Mk7 Service & Repair Manual: Removing and installing valve stem seals (cylinder head installed)

Using valve cotter tool -VAS 5161A- with guide plate, spark plug socket -3122 B- and compressed air, this page covers renewing Volkswagen Golf Mk7 valve stem seals without removing the cylinder head.

Special tools and workshop equipment required

Spark plug socket and extension -3122 B-

Removal and installation device for valve cotters -VAS 5161A- with guide plate -VAS 5161A/32-32-. Compressed air adapter -VAS 5161 A/35- (not illustrated)

Valve stem seal fitting tool -3365-

Valve stem pliers -VAS 6770- Procedure Golf SV –  Remove plenum chamber cover → Rep. gr.50.

–  Remove plenum chamber bulkhead → Rep. gr.50.

–  Remove bolts -arrows-. Remove heat shield from right drive shaft. –  Unscrew bolts -arrows-, and remove oil supply line -1-. Continuation for all vehicles –  Remove camshaft housing → Chapter. –  Unscrew spark plugs with spark plug spanner -3122 B-.

–  Unscrew locking pin -T10340-. –  Set piston of respective cylinder to “bottom dead centre”.

–  Fit guide plate -VAS 5161A/32-1- onto cylinder head and secure with knurled screws -VAS 5161/12-. –  Screw compressed air adapter -VAS 5161 A/35- into the respective park plug thread hand-tight. –  Connect adapter to compressed air supply using a commercially available union and apply pressure continuously. Minimum pressure: 6 bar –  Insert punch -VAS 5161/3A- into guide plate and use a plastic hammer to knock loose the firmly seated valve cotters.

–  Screw toothed piece -VAS 5161/6- with hooking fork -VAS 5161/5- into guide plate. –  Slide sleeve -VAS 5161A/32-2- onto assembly cartridge and insert cartridge into guide plate -VAS 5161A/32-3-. –  Attach pressure fork -VAS 5161/2- to toothed piece and press assembly cartridge down. –  At the same time, turn knurled screw of assembly cartridge clockwise until tips engage in valve cotters. –  Move knurled screw back and forth to press apart valve cotters and capture them in assembly cartridge. –  Release pressure fork. –  Remove installation cartridge. –  Unbolt guide plate and move to side. The compressed air hose remains connected. –  Remove valve spring and valve spring plate.

–  Pull off valve stem seal using valve stem pliers -VAS 6770-.   Note Risk of damage when installing valve stem seals.

–  Place plastic sleeve -A-, enclosed with new valve stem seals -B-, onto valve stem. –  Lightly oil sealing lip of valve stem seal. –  Push valve stem seal onto plastic sleeve. –  Carefully press valve stem seal onto valve guide using valve stem seal fitting tool -3365-. –  Remove plastic sleeve.

If the valve cotters have been removed from the assembly cartridge, they must first be inserted into the insertion device. Larger diameter of valve cotters faces upwards. –  Press assembly cartridge onto insertion device from above and pick up valve cotters. –  Insert valve spring and valve spring plate. For installation position of valve spring refer to → Fig..

–  Bolt guide plate -VAS 5161A/32-1- onto cylinder head again. –  Insert assembly cartridge -VAS 5161A/32-2- with sleeve -VAS 5161A/32-3- into guide plate. –  Press pressure fork downwards and pull knurled screw upwards, turning it clockwise and anticlockwise. This inserts the valve cotters. –  Reduce pressure on pressure fork whilst pulling on knurled screw. –  Repeat procedure on each valve. Reassembly Installation is carried out in the reverse order; note the following: Golf SV

–  Install oil supply line -1-, and tighten bolts -arrows- to 9 Nm. –  Install plenum chamber bulkhead → Rep. gr.50. –  Install plenum chamber cover → Rep. gr.50. Continuation for all vehicles –  Install spark plugs → Booklet. –  Install camshaft housing → Chapter.

Specified torques

Component	Specified torque
Bolts -1-	25 Nm

Questions & answers

Removing and installing valve stem seals (cylinder head installed) — Volkswagen Golf Mk7

How do I replace Golf Mk7 1.4 TSI valve stem seals with head on?

Pressurise the cylinder with compressed air to hold the valves up, use a spring compressor to remove the collets, then swap the seal.

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Removing and installing valve stem seals (cylinder head removed)

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