Porsche 996 TT Repair Manual page 728

If the valve in the clutch save cylinder is functioning correctly according to the test in 2.1, the upper part of
the tank −A− must be replaced.
Note
• Before removing the upper part of the tank, slowly remove the Pentosin through the filler neck by
suction! When replacing the part, ensure thorough cleanliness!
• Loosen all lines on the upper part of the tank. Collect Pentosin which runs out of these!
• Replace upper part of tank, reconnect the lines and fill with Pentosin!
Bleed clutch high−pressure hydraulic system. To this purpose, depress the clutch pedal approx. 10
•
times!
996420, 996421, 996450, 996451, 996620, 996621, 996650, 996651
2.2 Checking the valve (pressure−regulating valve) in the upper part of theexpansion tank
einordnung
665