Audi Workshop Service and Repair Manuals

• Connection
• Self-tapping bolt, 9 Nm
• O-ring
• ◆ Renew
• Coolant thermostat
• ◆ Checking operation: heat-up thermostat in water the thermo element pin must move out
• ◆ Temperature check: Opening starts (approx. 84 °C) and ends (approx. 98 °C) cannot be checked.
• To heat exchanger
• ◆ Coolant hose connection diagram

• From expansion tank
• ◆ Coolant hose connection diagram => Page 19-13
• Thermostat housing
• From heat exchanger
• ◆ Coolant hose connection diagram => Page 19-13
• Coolant pipe
• ◆ Coolant hose connection diagram => Page 19-13
• Seal
• ◆ Renew
• Coolant pump housing on cylinder block
• Retaining clip
• ◆ Check for secure seating
• 10 Nm

• Coolant temperature sender (G62)
• ◆ With coolant temperature gauge sender (G2)
• ◆ For engine control unit
• ◆ If necessary release pressure in cooling system before removing
• ◆ Checking:

=> Repair Group 01; Fault memory; Interrogating and erasing fault memory of engine control unit

• Sealing plug
• ◆ If necessary release pressure in cooling system before removing
• Retaining clip
• ◆ Check for secure seating
• Self-tapping bolt
• Bracket
• To bottom of radiator
• ◆ Coolant hose connection diagram => Page 19-13

• From top of radiator
• ◆ Coolant hose connection diagram => Page 19-13

Coolant pump side

• Coolant pump
• ◆ With integrated seal
• ◆ Seal must not be separated from coolant pump
• ◆ Replace damaged or leaking coolant pump together with seal
• ◆ Check for ease of movement
• ◆ Removing and installing
  => Page 19-23
• Rear toothed belt guard
• Camshaft sprocket
• ◆ When installing note fixing arrangement
• ◆ Note position when installing the toothed belt
  => Page 15-11

• 20 Nm + 1/4 turn (90 °) further
• ◆ Renew
• ◆ To loosen and tighten, hold with retainer 3036
• Toothed belt
• ◆ Mark D.O.R. before removing
• ◆ Check for wear
• ◆ Do not kink
• ◆ Removing, installing and tensioning
  => Page 15-11
• Toothed belt guard - upper part
• 10 Nm
• Toothed belt guard - lower part
• 10 Nm
• ◆ Install with D6
• 20 Nm