Leon Mk2
| Cooling system components, engine side |
| Thermostat side |
| 1 - | Support |
| 2 - | Self-tapping bolt |
| 3 - | From bottom of radiator |
| q | Coolant hose connection diagram → Chapter |
| 4 - | Connection |
| 5 - | O-ring |
| q | Renew |
| 6 - | Coolant thermostat |
| q | Checking operation: Heat thermostat in water The thermo element pin should move out |
| q | Temperature check: Opening starts (approx. 84 °C) and ends (approx. 98 °C) cannot be checked |
| 7 - | To top of expansion tank |
| q | Coolant hose connection diagram → Chapter |
| 8 - | To heat exchanger |
| q | Coolant hose connection diagram → Chapter |
| 9 - | From expansion tank |
| q | Coolant hose connection diagram → Chapter |
| 10 - | Retaining clip |
| q | Ensure tight fit |
| 11 - | From heat exchanger |
| q | Coolant hose connection diagram → Chapter |
| 12 - | Coolant pump housing on cylinder block |
| 13 - | Sealing ring |
| q | Renew |
| 14 - | Coolant pipe |
| 15 - | Thermostat housing |
| 16 - | 10 Nm |
| 17 - | Coolant temperature sender -G62- |
| q | With coolant temperature gauge sender -G2- |
| q | For engine control unit |
| q | If necessary release pressure in cooling system before removing |
| q | Checking: → Vehicle diagnosis, testing and information system VAS 5051 |
| 18 - | Plug |
| q | If necessary release pressure in cooling system before removing |
| 19 - | To top of radiator |
| q | Coolant hose connection diagram → Chapter |
| Coolant pump side |
| 1 - | Main drive toothed belt |
| q | Mark direction of rotation before removing |
| q | Check for wear |
| q | Do not kink |
| q | Toothed belt routing → Fig. |
| q | Removing, installing and tensioning → Chapter |
| 2 - | Coolant pump |
| q | Check for ease of movement |
| q | If damaged or leaking renew complete Only renew complete |
| q | removal and installation → Chapter |
| 3 - | 10 Nm |
| 4 - | Rear toothed belt guard |
| 5 - | Toothed belt guard - upper part |
| 6 - | Toothed belt guard - lower part |
| 7 - | Pulley |
| q | When installing note fixing arrangement |
| q | removal and installation → Chapter; Toothed belt: Removing, installing and tensioning |
| q | Removing and installing ribbed belt → Chapter |
| 8 - | tighten to 90 Nm + continue tightening 1/4 turn (90°) |
| q | Renew |
| q | Oil threads |
| q | Tightening can be done in several stages |
| q | the tightening angle can be measured using protractor -T20030- |
| 9 - | 12 Nm |
| q | Renew |
| 10 - | 20 Nm |
| 11 - | Crankshaft toothed belt- sprocket |
| q | Note position when installing toothed belt → Chapter |
