Cooling System: Components: Notes
INDEX EXPLANATION CHART
| Index | Explanation |
|---|---|
| A | Auxiliary radiator |
| B | Coolant feed line to auxiliary radiator |
| C | Oil-to-coolant heat exchanger |
| D | Coolant feed line to oil-to-coolant heat exchanger |
| E | Coolant return line from auxiliary radiator |
| 1 | Zone 1 feed line, heating heat exchanger |
| 2 | Zone 2 feed line, heating heat exchanger |
| 3 | Coolant valve |
| 4 | Expansion tank |
| 5 | Equalization line |
| 6 | Radiator |
| 7 | Bypass line for small cooling circuit |
| 8 | Thermostat |
| 9 | Electric coolant pump |
| 10 | Exhaust turbocharger supply line |
| 11 | Thermostat for transmission oil cooling |
| 12 | Coolant feed line to engine block |
| 14 | Transmission oil-to-coolant heat exchanger |
| 15 | Connection, transmission oil line |
| 16 | Connection, transmission oil line |
| 17 | Return, heating heat exchanger |
The following graphic shows the connection of the auxiliary radiator to the cooling system. The auxiliary radiator is connected to the radiator by means of parallel coolant lines, thus increasing the cooling surface area. This system is combined with an oil-to-coolant heat exchanger mounted on the oil filter housing. (See in the previous graphic.)
INDEX EXPLANATION CHART
| Index | Explanation |
|---|---|
| 1 | Radiator |
| 2 | Auxiliary Radiator |
| 3 | Feed connection to the auxiliary radiator |
| 4 | Feed connection at the auxiliary radiator |
| 5 | Return connection to the auxiliary radiator |
| 6 | Return connection from the auxiliary radiator |
NOTE:
If a separate oil to air cooler is not installed, an auxiliary radiator in conjunction with an oil to coolant heat exchanger is used to cool the engine oil.