Remove Valve Stem Seals
-- Remove the camshafts. Refer to CAMSHAFT, REMOVING AND INSTALLING .
-- Mark the allocation of the roller rocker lever and the hydraulic adjusting elements so they can be installed again.
-- If necessary, remove the roller rocker levers with the hydraulic adjusting elements and place them on a clean surface.
-- Remove the spark plugs using a :3122B .
-- Install the :VAS5161/19B with the :VAS5161/12 as shown on the cylinder head.
-- Move piston for that cylinder to "bottom dead center position".
-- Install the :T40012 in the spark plug threads.
-- Connect compressed air with at least 6 bar (87 psi) pressure.
-- Loosen stuck valve retainers using a :VAS5161/3A and a plastic hammer.
For Intake Side
-- Install the : VAS5161/6 with :VAS5161/5 in the center thread of the : VAS5161/19B .
-- Place the :VAS5161/8 in the :VAS5161/19B .
-- Engage the :VAS5161/2 on the :VAS5161/6 .
For Exhaust Side
-- Install the :VAS5161/6 with :VAS5161/5 in the outer thread of the : VAS5161/19B .
-- Press down the :VAS5161/8A and at the same time turn the knurled thumb screw on the :VAS5161/8A to the right until the points engage in the valve retainers.
-- Move the knurled thumb screw back and forth slightly. This presses the valve retainers apart and captures them in the installation cartridge.
-- Release the :VAS5161/2 .
-- Remove the :VAS5161/8A .
-- Remove the valve stem seals using :3364 .
-- If the :3364 cannot be used because there is not enough space, drive the roll pin -arrow- out using a drift and remove the impact attachment.
-- Position the lower part of the :3364 on the valve stem seal.
-- Place the drift -1- in the hole in the lower section of the removal tool.
-- Position the lever on the removal tool and remove the valve stem seal in direction of -arrow-.