Check Valve, Removing And Installing: Installing
WARNING: This page is about a different car, the 2018 Audi Q3 Quattro, 2018 Audi Q3, 2017 Audi Q3 Quattro, and 2017 Audi Q3. However, it is still accessible from the selected car via links, so may be relevant.
-- Clean the oil channel.
-- Coat the seal on the new check valve with clean engine oil.
-- Insert the check valve by hand all the way into the cylinder head.