Audi Workshop Service and Repair Manuals > A3 Mk1 > Power unit | 4-Cylinder engine (2-valve, roller rockers), Mechanics | Engine cooling | Removing and installing parts of cooling system | Parts of cooling system (on body)

Parts of cooling system (on engine) > < Removing and installing parts of cooling system

4-Cylinder engine (2-valve, roller rockers), Mechanics

Removing and installing parts of cooling system

Parts of cooling system (on body)



Radiator ◆ Removing and installing ◆ After replacing renew entire coolant O-ring ◆ Renew Upper coolant hose ◆ Secured to radiator with retaining clip ◆ Check for secure seating ◆ Coolant hose connection diagram => Page 19-13 Air cowl 10 Nm Additional fan ◆ Only vehicles with optional equipment



Bracket ◆ For electric fan Retaining clip ◆ Check for secure seating Connector Radiator fan (V7) To thermostat housing ◆ Coolant hose connection diagram => Page 19-13 Expansion tank ◆ Carry out leak test of cooling system with cooling system tester V.A.G 1274 and adapter V.A.G1274/8 Filler cap ◆ Check with cooling system tester V.A.G 1274 and adapter V.A.G 1274/9 ◆ Test pressure 1.4...1.6 bar



Bracket ◆ For radiator fan connector Lower coolant hose ◆ Secured to radiator with retaining clip ◆ Check for secure seating ◆ Coolant hose connection diagram => Page 19-13 O-ring ◆ Renew Thermo-switch (F18), 35 Nm ◆ For electric fan ◆ Switching temperatures: Stage 1 on: 92...97 °C off: 84...91 °C Stage 2 on: 99...105 °C off: 91...98 °C



Bracket ◆ For radiator ◆ Note fitting position ◆ Note various versions 10 Nm

Power unit
4-Cylinder engine (2-valve, roller rockers), Mechanics
Engine cooling / Removing and installing parts of cooling system
Parts of cooling system (on body)

Parts of cooling system (on engine) > < Removing and installing parts of cooling system