Replacing Valve Stem Seals

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Observe the most important working regulations and warning notes → The most important working regulations and warning notes .

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Position the pistons of the relevant cylinder at the bottom dead center .
Each piston is pressed downwards as pressure builds up in the cylinder .

Set piston for the corresponding cylinder to bottom dead center.
Lever Tool 2036 -1, 2 and 4- must be attached to the cylinder head and then adjusted. The installation position of the tool must be adjusted for each valve.

Fig 1: Positioning Tool
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Adapter T40012 -3- must be screwed into the relevant spark plug thread and while constantly supplying compressed air (min. 6 bar overpressure). This builds up pressure in the cylinder so that the valve does not fall into the cylinder while you are working.
Valve lever VW 541/1A -5- must be attached under the pipe of the lever tool 2036 . Then press the concave washer on the valve down using the pressure piece. Keep pressing the washer down.
Remove the two valve keys from the valve using pointed-nose pliers or a fine magnet.
Relax the concave washer and valve spring and remove loose components.
Remove the valve stem seals from the valve using a puller 3364 .
Push a plastic sleeve -A- on to the valve (protects the valve stem seal from the key grooves). Oil a new valve stem seal -B- and insert it into the Press-On Tool 3365 -1- .

Fig 2: Identifying Plastic Sleeve, Valve Stem Seal And Tool
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fit the valve stem seal using the Press-On Tool 3365 -1- .

Fig 3: Installing Valve Stem Seal
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fit the valve springs, concave washers and valve keys using the Valve Lever VW 541/1A and Lever Tool 2036 .
Remove the air connection and fit it to the next spark plug thread.
Replace the next valve stem seal using the procedure described above.
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- Before switching to another cylinder, the cylinder must be positioned at the bottom dead center and supplied with compressed air (see 1 ) .