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Home >> Volkswagen >> 2006 >> Touareg (7LA) V8-4.2L (AXQ) >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Seals and Gaskets >> Valve Guide Seal >> Service and Repair

Valve Guide Seal: Service and Repair






Valve Stem Seals

Special tools, testers and auxiliary items required

• Spark plug removal tool (3122 B)

• Valve seal removal tool (3364)

• Valve stem seal driver (3365)

• Adapter (T40012)

• Torque wrench (5 to 50 Nm) (V.A.G 1331)

• Valve cotter disassembly and assembly device (VAS 5161)

Removing

- Remove engine --> [ Engine, Removing ] Engine Removing.

- Remove camshafts and camshaft adjusters --> [ Camshafts and Camshaft Adjusters ] Service and Repair.

- Remove spark plugs using spark plug removal tool (3122B).

- Turn roller rocker lever upward and secure it with a rubber band.





- Place guide plate (VAS 5161/7) onto cylinder head as shown.





- Secure guide plate with knurled screws (VAS 5161/12).

- Insert drift (VAS 5161/3) into guide plate and loosen stuck valve keepers using a plastic hammer.

- Install engaging device (VAS 5161/6) with (VAS 5161/5) into guide plate (VAS 5161/7).





- Guide installation cartridge (VAS 5161/8) into guide plate (VAS 5161/7).

- Install adapter (T40012) into spark plug hole and using a commercially available adapter apply a constant pressure of at least 6 bar.

- Engage pressure fork (VAS 5161/2) at engaging device (VAS 5161/6) and press down installation cartridge.

- At the same time, turn knurled bolt of installation cartridge to the right, until the points engage in the valve keepers.

- Lightly move knurled bolt back and forth, causing the valve keepers to be pressed apart and be captured in the installation cartridge.

- Release pressure fork and remove installation cartridge from guide plate.

- Remove guide plate from cylinder head.

• Pressurized air line remains connected.

- Remove valve stem seals using Valve Seal Removal Tool (3364).





Installing

- Place plastic sleeve - A - on valve stem to prevent damage to new valve stem oil seals.





- Oil sealing lip of valve stem oil seal - B -, insert into valve stem seal driver (3365) and carefully slide onto valve guide.

- Remove plastic sleeve - A - again.

If valve keepers were removed from the installation cartridge, they must then be inserted into insertion device (VAS 5161/18).





• The large diameter faces upward.

- Insert valve spring and valve spring plate.

- Install guide plate (VAS 5161/7) onto cylinder head again.

- Insert installation cartridge (VAS 5161/8) into guide plate.





- Press down pressure fork and pull knurled bolt upward. The valve keepers are inserted in this manner.

- Release pressure fork with knurled bolt still pulled.

- Install camshafts with camshaft adjusters --> [ Camshafts and Camshaft Adjusters ] Service and Repair.

Adjusting valve timing --> [ Toothed Belt, Removing, Installing and Tensioning ] Toothed Belt, Removing, Installing and Tensioning.

• After installing the camshafts, the engine may not be started for approx. 30 minutes. Hydraulic equalization elements must seat themselves. (Otherwise the valves will crash into the pistons).

• After working on the valvetrain and lifters, carefully rotate the crankshaft by hand at least 2 full revolutions before starting to be sure that valves do not strike the pistons.
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