34 TP-7173 10/20
8.2 Cooling System Component Inspection
To prevent generator set shutdown or damage caused by overheating:
Keep the cooling air inlets clean and unobstructed.
Test antifreeze before cold weather periods.
Inspect the radiator’s exterior for obstructions. Remove dirt and foreign material using a soft brush or cloth to avoid damaging
the radiator fins.
Check the hoses and connections for leaks. Replace any cracked, frayed, or spongy hoses.
Check the condition and tension of the radiator fan and water pump belt(s).
Check the pressure cap seal and replace a cracked or deteriorated cap. Remove dirt and other debris from the pressure
cap and filler neck. The pressure cap raises the boiling point of the coolant, enabling higher operating temperatures. Replace
a leaking pressure cap with one rated for the same pressure. The pressure cap rating usually appears on the pressure cap.
8.3 Procedure to Drain Cooling System
8.3.1 Procedure to Drain Cooling System
For optimum protection, drain, flush, and refill the cooling system at the intervals listed in the service schedule.
Note:
Dispose of all waste materials (oil, fuel, coolant, filters, and gaskets) in an environmentally safe manner.
1. Before removing the pressure cap, stop the generator set and allow it to cool.
2. Deenergize the block heater, if equipped.
Note:
Use a rag to cover the radiator cap during removal.
3. Remove the pressure cap to prevent air pockets from restricting coolant flow through the engine block.
4. Open the radiator and/or engine block coolant drain valve(s) and allow the system to drain.
5. If the inside of the radiator has mineral deposits or the used coolant contains dirt or grease, refer to the following section,
Procedure to Flush and Clean the Cooling System. If the cooling system does not have mineral deposits, go to the following
section, Procedure to Refill the Cooling System.
8.4 Procedure to Flush and Clean Cooling System
Use the instructions in the engine operation manual when available to flush and clean the cooling system. Otherwise, use the
following procedure and the cooling system cleaner manufacturer’s instructions.
1. Flush the cooling system with distilled or deionized water.
2. If the inside of the radiator still has mineral deposits, use a radiator cleaner to remove the remaining deposits following
the manufacturer’s instructions.
3. Drain, clean, and flush the coolant recovery tank.
To Next Page
Loading...
Need help?
General
