Valve Stem Seals, Removing And Installing, Cylinder Head Installed: Installing
- In order not to damage the valve stem seal -4- during installation, mount the Assembly Tool: T40452 -3- on the valve stem -2-.
-- Lightly oil the valve stem seal sealing lip.
- Depending on the version/manufacturer of the valve stem seal, use the Seal Installer - Valve Stem: 3365 or Fitting Tool: T40376/1 from the Fitting Tool: T40376A .
-- Insert the valve stem seal into the seal installer -5- and carefully press it all the way onto the valve guide -1- over the Mounting Sleeve.
-- Remove the Assembly Tool.
If the valve retainers were removed from the assembly cartridge, they must be inserted into the Valve Cotter Tool Kit - Valve Insertion Device: VAS5161/18 first.
- The large diameter of the valve retainers point upward.
-- Press the assembly cartridge from above onto valve retainer inserting tool and valve retainers.
-- Insert the valve spring and the valve spring retainer. Refer to Figure.
-- Attach the Valve Cotter Tool Kit - Guide Plate: VAS5161/44 onto the cylinder head again.
Courtesy of AUDI OF AMERICA, LLC-- Insert the assembly cartridge into the guide plate.
-- Press the pressure fork down and pull the knurled bolt up while turning left and right. This inserts the valve retainers.
-- Release the pressure fork with the knurled bolt still raised.
-- Repeat the procedure on each valve.
Assembling
Assemble in the reverse order of removal. Note the following:
-- Install the camshafts. Refer to CAMSHAFT, REMOVING AND INSTALLING .
-- Install the spark plugs. Refer to OVERVIEW - IGNITION SYSTEM .
Risk of damaging the valves and piston crowns by performing procedures on the valvetrain.
- Only start the engine 30 minutes after installation of the camshaft so that they do not contact the hydraulic lifters.
- To ensure valves do not strike pistons when starting, carefully rotate the crankshaft at least two turns.

