Auxiliary Engine Coolant Heater, Coolant Circuit Layout

Auxiliary Engine Coolant Heater, Coolant Circuit Layout

NOTE:
- The coolant system is under pressure when the engine is warm. If necessary, release coolant system pressure prior to repair work.
- The coolant circuit must be free of air for the auxiliary engine coolant heater to heat properly.







1 - Heat exchanger for heater unit
2 - Auxiliary engine coolant heater
3 - Recirculation Pump V55
4 - Fuel cooler
5 - Generator
6 - Cylinder head/cylinder block
7 - Thermostat housing
8 - Valve body
9 - Radiator
10 - Low temperature cooler
- for generator and fuel cooling
11 - Fuel Cooler Pump V166
12 - After-Run Coolant Pump V51
13 - Check valve
- Observe installed position
14 - Engine coolant expansion tank