A5
Diagram of coolant hose connections |
Vehicles without auxiliary heater |
Note
Arrows show direction of coolant flow. |
1 - | Radiator |
q | If renewed, refill system with fresh coolant |
2 - | Coolant pump |
3 - | Coolant temperature sender -G62- |
4 - | Thermostat |
5 - | Coolant circulation pump -V50- |
q | Activated by circulation pump relay -J160- |
q | Removing and installing → Rep. Gr.87 |
6 - | Cylinder head and cylinder block |
q | If renewed, refill system with fresh coolant |
7 - | Coolant shut-off valve |
q | Activated via Climatronic coolant shut-off valve -N422- |
q | Climatronic coolant shut-off valve -N422- is activated via Climatronic control unit -J255- |
q | Removing and installing → Rep. Gr.87 |
8 - | Bleed hole |
9 - | Heat exchanger for heater |
q | Removing and installing → Rep. Gr.87 |
q | If renewed, refill system with fresh coolant |
10 - | Filler cap for expansion tank |
q | Checking pressure relief valve → Anchor |
11 - | Coolant expansion tank |
12 - | Oil cooler |
q | If renewed, refill system with fresh coolant |
13 - | Continued coolant circulation pump -V51- |
q | For vehicles equipped for a hot climate |
14 - | Non-return valve |
15 - | Non-return valve |
Vehicles with auxiliary heater |
Note
Arrows show direction of coolant flow. |
1 - | Radiator |
q | If renewed, refill system with fresh coolant |
2 - | Coolant pump |
3 - | Coolant temperature sender -G62- |
4 - | Thermostat |
5 - | Auxiliary heater |
q | With circulation pump -V55- |
q | Removing and installing → Rep. Gr.82 |
6 - | Cylinder head and cylinder block |
q | If renewed, refill system with fresh coolant |
7 - | Climatronic coolant shut-off valve -N422- |
q | Removing and installing → Rep. Gr.87 |
q | Activated via Climatronic control unit -J255- |
8 - | Bleed hole |
9 - | Heat exchanger for heater |
q | Removing and installing → Rep. Gr.87 |
q | If renewed, refill system with fresh coolant |
10 - | Filler cap for expansion tank |
q | Checking pressure relief valve → Anchor |
11 - | Coolant expansion tank |
12 - | Oil cooler |
q | If renewed, refill system with fresh coolant |
13 - | Continued coolant circulation pump -V51- |
q | For vehicles equipped for a hot climate |
14 - | Non-return valve |
15 - | Non-return valve |