Leon Mk2
| Engine cooling system, - Components overview |
| Thermostat side |
| 1 - | Connection hose |
| 2 - | Short threaded bolt, 9 Nm |
| 3 - | O-ring |
| q | Renew |
| 4 - | Coolant thermostat |
| q | Checking: Heat the thermostat in water |
| q | Initial opening: about 84°C |
| q | Final opening: about 98°C |
| q | Opening distance: min. 7mm |
| 5 - | To heat exchanger |
| q | Coolant hose connection diagram → Chapter |
| 6 - | Comes from the expansion tank |
| q | Coolant hose connection diagram → Chapter |
| 7 - | Thermostat housing |
| 8 - | From heat exchanger |
| q | Coolant hose connection diagram → Chapter |
| 9 - | Coolant pipe |
| q | Coolant hose connection diagram → Chapter |
| 10 - | Oil seal |
| q | Renew |
| 11 - | Coolant pump housing in cylinder block |
| 12 - | Securing clip |
| q | Check that it is seated securely |
| 13 - | 10 Nm |
| 14 - | Plug |
| q | Before removing, casually reduce cooling system pressure |
| 15 - | Coolant temperature sender -G62- |
| q | With Coolant temperature sender -G2- |
| q | Before removing, casually reduce cooling system pressure |
| q | Resistance values for coolant temperature sender -G62- → Fig. |
| 16 - | Securing clip |
| q | Check that it is seated securely |
| 17 - | Bolt 6 Nm |
| 18 - | Support |
| 19 - | To radiator, upper part |
| q | → Item |
| q | Coolant hose connection diagram → Chapter |
| 20 - | From radiator, lower part |
| q | → Item |
| q | Coolant hose connection diagram → Chapter |
| Coolant pump side |
| 1 - | Principal notched belt: |
| q | Mark D.O.R. before removing |
| q | Check for wear |
| q | Do not kink |
| q | Notched belt routing → Fig. |
| q | Removing, installing and tensioning → Chapter |
| 2 - | Front of coolant pump |
| q | Check for ease of movement |
| q | If damaged or leaking: replace completely |
| q | Removing and installing → Chapter |
| 3 - | 10 Nm |
| 4 - | Rear notched belt guard |
| 5 - | Notched belt guard - upper part |
| 6 - | Notched belt guard - lower part |
| 7 - | Pulley |
| q | Note location when installing |
| q | Removing and installing → Chapter; Notched belt: removing, installing and tensioning |
| q | Poly-V Ribbed belt: removing and installing → Chapter |
| 8 - | 90 Nm + 1/4 turn (90 °) |
| q | Renew |
| q | Lubricate before fitting |
| q | Tightening can be done in several stages |
| q | The angle of re-tightening may be measured with a protractor, for example measuring tool -T20030- |
| 9 - | 10 Nm |
| 10 - | 50 Nm |
| q | The engine, identification letters BXW, is not fitted with this |
| 11 - | Support with idler rocker |
| q | The engine, identification letters BXW, is not fitted with this |
| 12 - | 20 Nm |
| 13 - | Crankshaft toothed belt wheel |
| q | Observe position when fitting the toothed belt → Chapter |
