Leon Mk2
Parts of cooling system - engine side, engine code AJH |
1 - | 15 Nm |
2 - | To turbocharger |
q | Coolant hose schematic diagram → Chapter. |
3 - | Coolant circulation pump -V50- |
q | Black 2-pin connector. |
q | Checking → Chapter. |
4 - | Thermostat |
q | Checking: heat thermostat in water. |
q | Opening begins approx. 87 °C |
q | Ends at approx. 102 °C. |
q | Opening lift min. 7 mm. |
5 - | O-ring |
q | Renew. |
6 - | Connection |
7 - | To heat exchanger |
q | Coolant hose schematic diagram → Chapter. |
8 - | To rear heat exchanger |
q | Only vehicles with optional equipment. |
q | Location: in rear left wheel housing. |
9 - | Securing clip |
q | Check for secure seating. |
10 - | Coolant temperature sender -G62- |
q | Blue, 4-pin |
q | With coolant temperature sender -G2-. |
q | For engine control unit. |
q | If necessary, release pressure in cooling system before removing. |
q | Checking → Rep. Gr.01. |
11 - | Connector |
12 - | Thermal switch for air conditioning shut-off -F163- and Thermal switch for radiator fan third speed -F165- |
q | Brown, 4-pin |
q | If necessary, release pressure in cooling system before removing. |
q | Vehicles with air conditioner → Rep. Gr.87. |
q | Vehicles without air conditioner, blanking plug. |
13 - | 10 Nm |
14 - | Air conditioning system coolant temperature sender -G110- |
q | 2-pin. |
q | If necessary, release pressure in cooling system before removing. |
q | Vehicles with air conditioner → Rep. Gr.87. |
15 - | Bracket |
16 - | To top of radiator |
q | Check for secure seating. |
q | Coolant hose schematic diagram → Chapter. |
17 - | Lower coolant hose |
q | Check for secure seating. |
q | Coolant hose schematic diagram → Chapter. |
18 - | Oil cooler |
q | Dismantling and assembling → Chapter, Disassembling and assembling oil filter bracket: engine code AJH. |
19 - | From rear heat exchanger |
q | Only vehicles with optional equipment. |
q | Location: in rear left wheel housing. |
20 - | 20 Nm |
21 - | Coolant pipe |
q | Coolant hose schematic diagram → Chapter. |
22 - | Cap |
q | Check using cooling system tester -V.A.G 1274- and adapter for cooling system tester -V.A.G 1274/9-. |
q | Pressure relief valve must open at between 1.4...1.6 bar. |
23 - | Seal |
q | Observe installation position on cap |
q | Renew if damaged. |
24 - | Expansion tank |
q | Test for leaks in cooling system using cooling system tester -V.A.G 1274- and adapter for expansion tank -V.A.G 1274/8-. |
q | Observe markings → Chapter Draining and filling coolant |
25 - | From heat exchanger |
q | Coolant hose schematic diagram → Chapter. |
26 - | Union, 30 Nm |
q | For coolant supply pipe. |
27 - | Coolant supply pipe |
q | For turbocharger |
q | Coolant hose schematic diagram → Chapter. |
28 - | Coolant pump |
q | Check for ease of movement. |
q | If damaged or leaking, renew complete. |
q | Removing and installing → Chapter. |
29 - | Toothed belt |
q | Mark direction of rotation before removing. |
q | Check for wear |
q | Do not kink |
q | Removing, installing and tensioning → Chapter. |