Valve Stem Seals, Removing And Installing, Cylinder Head Installed: Removing
-- Remove the camshafts. Refer to CAMSHAFT, REMOVING AND INSTALLING .
-- Remove the spark plugs using the :3122B .
-- Set the piston for the respective cylinder to "bottom dead center (BDC)".
-- Position the :VAS5161/3A on the valve spring plate and loosen the stuck valve retainers with a plastic mallet.
-- Check if the opening -arrow- is present.
-- If necessary, rework the :VAS5161/19C until the guide plate touches the cylinder head and the guide pin -1- is free.
-- Secure the guide plate with the :VAS5161/12 .
-- Install the :T40012 in the spark plug threads.
-- Connect the adapter to the compressed air using a commercially available intermediate piece and give steady pressure.
- Minimum pressure: 6 bar (87.02 psi)
-- Install the :VAS5161/6 with the :VAS5161/5 in the guide plate.
-- Push the :VAS5161/8A into the guide plate.
-- Engage the :VAS5161/2 at the engaging device and press the installation cartridge downward.
-- At the same time, turn the installation cartridge knurled bolt right until points engage in the valve retainers.
-- Move the knurled bolt left and right slightly. This presses the valve retainers apart and captures them in the assembly cartridge.
-- Release the pressure fork.
-- Remove the assembly cartridge.
-- Remove the guide plate and turn it aside.
- The pressurized air hose remains connected.
-- Remove the valve spring and the valve spring retainer.
-- Remove the valve stem seal with the :3364 .