Coolant thermostat, removing and installing: Installing

Install in the opposite order to removing. When installing, note the following points:

• Lubricate new O-ring -3- with coolant.
• Install thermostat -4- into engine block.
• Make sure that thermostat bleeder valve -arrow- is on top.
  Fig 1: Locating Thermostat Bleeder Valve Installed Position

  Courtesy of AUDI OF AMERICA, INC.
• Install connection for thermostat and tighten bolts.

  Tightening torque: 10 Nm

• Install toothed belt. See TOOTHED BELT, REMOVING AND INSTALLING .
• Install ribbed belt. See RIBBED BELT, REMOVING AND INSTALLING .
• Fill cooling system. See COOLING SYSTEM, DRAINING AND FILLING .