Overview - Coolant Pump/Thermostat

Fig 1: Coolant Pump, Thermostat And Connecting Piece Overview

Courtesy of AUDI OF AMERICA, LLC

Bolt
- 9 Nm
Bolt
- 20 Nm
Coolant Pump Ribbed Belt Pulley
Coolant Pump
- With seal
- There are different versions.
- For the A5 from MY 2012, the A4 from MY 2013 with vacuum control together with Cylinder Head Coolant Valve -N489- -14-
- Removing and installing. Refer to COOLANT PUMP, REMOVING AND INSTALLING .
Bolt
- 9 Nm
Bolt
- Tightening specification:
  - 40 Nm
  - 37 Nm when using Wrench - Door Adjusting 3320
Washer
Idler Roller for Ribbed Belt
Connection
- For coolant hose
Seal
- Replace
Seal
- Replace
Coolant Thermostat
- Removing and installing. Refer to COOLANT THERMOSTAT, REMOVING AND INSTALLING .
- Checking. Refer to COOLANT THERMOSTAT, CHECKING .
  NOTE:
  When removing and installing the coolant thermostat, make sure that the thermostat needle is installed correctly (conical end is inserted in the coolant thermostat wax thermostatic element). If necessary, push the thermostat needle all the way into the wax thermostatic element.
Bolt
- 9 Nm
Cylinder Head Coolant Valve -N489-
- For A5 from MY 2012, A4 from MY 2013