Leon Mk2
| Parts of cooling system - engine side, engine code AWC |
| 1 - | Bracket |
| q | For coolant circulation pump. |
| 2 - | Coolant circulation pump -V50- |
| q | Black 2-pin connector. |
| q | Checking → Chapter. |
| 3 - | 10 Nm |
| 4 - | To heat exchanger |
| q | Coolant hose schematic diagram → Chapter. |
| 5 - | Connector |
| q | Black, 2-pin. |
| q | For coolant temperature sender. |
| 6 - | Securing clip |
| q | Check for secure seating. |
| 7 - | Connector |
| q | Black, 2-pin. |
| q | For low coolant indicator sender. |
| 8 - | Cap |
| q | Note oil seal installation position in cap. |
| q | Renew seal if damaged. |
| q | Check using cooling system tester -V.A.G 1274- and adapter -V.A.G 1274/1A- and adapter -V.A.G 1274/7-. |
| q | Pressure relief valve must open at between 1.4...1.6 bar. |
| 9 - | Expansion tank |
| q | Test for leaks in cooling system using cooling system tester -V.A.G 1274- and adapter -V.A.G 1274/7-. |
| q | Observe markings → Chapter Draining and filling coolant |
| 10 - | From heat exchanger |
| q | Coolant hose schematic diagram → Chapter. |
| 11 - | O-ring |
| q | Renew if damaged. |
| 12 - | 20 Nm |
| 13 - | Coolant pipe |
| q | Coolant hose schematic diagram → Chapter. |
| 14 - | Lower coolant hose |
| q | From bottom of radiator. |
| q | Check for secure seating. |
| q | Coolant hose schematic diagram → Chapter. |
| 15 - | Upper coolant hose |
| q | To top of radiator |
| q | Check for secure seating. |
| q | Coolant hose schematic diagram → Chapter. |
| 16 - | Oil cooler |
| q | Removing and installing → Chapter, Disassembling and assembling oil filter bracket: engine code AWC. |
| 17 - | 15 Nm |
| 18 - | Connection |
| q | For thermostat. |
| 19 - | O-ring |
| q | Renew. |
| 20 - | Thermostat |
| q | Removing and installing → Chapter. |
| q | Observe installation position, → Chapter, Removing and installing thermostat. |
| q | Checking: heat thermostat in water. |
| q | Opening begins at approx. 87 °C. |
| q | Ends at approx. 102 °C. |
| q | Opening lift min. 7 mm. |
| 21 - | Union, 30 Nm |
| q | For coolant supply pipe. |
| 22 - | Coolant supply pipe |
| q | For turbocharger |
| q | Coolant hose schematic diagram → Chapter. |
| 23 - | Coolant pump |
| q | Check for ease of movement. |
| q | If damaged or leaking, renew complete. |
| q | Removing and installing → Chapter. |
| 24 - | Toothed belt |
| q | Mark D.O.R. before removing. |
| q | Check for wear |
| q | Do not kink |
| q | Removing, installing and tensioning → Chapter. |
| 25 - | Coolant return pipe |
| q | For turbocharger |
| q | Coolant hose schematic diagram → Chapter. |
| 26 - | Coolant temperature sender -G62- |
| q | Black, 2-pin. |
| q | For engine control unit. |
| q | If necessary, release pressure in cooling system before removing. |
| q | Checking → Rep. Gr.01. |
| 27 - | Connection |
