Pump valve unit, replacing

WARNING: The cooling system is pressurized when the engine is warm. Wear gloves and other appropriate protection, and slowly and carefully release system pressure, if necessary, before performing repairs.

Remove pump valve unit. See PUMP VALVE UNIT, REMOVING AND INSTALLING .
Remove screws -A-. See Fig 1.
Remove bracket -B-.
Remove coolant hoses (hoses -C- to heater core on passenger side, hoses -D- to heater core on passenger side, hoses -D- to heather core on driver side).

Fig 1: Removing Pump Valve Unit

Courtesy of AUDI OF AMERICA, INC.

NOTE:

Replace O-rings -E-.
Insert rubber mounts -F- in the pump valve unit and in the bracket -G- as shown in the figure.