TP-7070 7/18 85Section 3 Scheduled Maintenance
3.8.2 Coolant Level Check
Check the coolant level in the coolant expansion tank.
Maintain the coolant level between the high and low
marks on the radiator sight glass.
3.8.3 Cooling System Component
Inspection
To prevent generator set shutdown or damage caused
by overheating:
D Keep the cooling air inlets clean and unobstructed.
D Inspect the radiator’s exterior for obstructions.
Remove dirt and foreign material using a soft brush or
cloth to avoid damaging the radiator fins.
D Check the hoses and connections for leaks. Replace
any cracked, frayed, or spongy hoses.
D Check the condition and tension of the radiator fan
and water pump belt(s). Follow the belt tension
procedure in this manual and/or the engine operation
manual.
D 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.
3.8.4 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 o f all waste materials (oil, fuel, coolant,
filters, and gaskets) in an environmentally safe
manner.
1. Read and follow the safety precautions in
Sections 3.1 and 3.8.1.
2. Allow the engine to cool.
3. Deenergize the block heater, if equipped.
4. Remove the pressure cap to allow the entire
system to drain and prevent air pockets from
restricting coolant flow through the engine block.
5. Open the radiator and/or engine block coolant
drain valve(s) and allow the system to drain.
Note: The drain valve(s) are typically located
along the bottom of the skid. See
Figure 3-11. Models KD2000--KD3250 have
two drains, one for each coolant circuit, on
the skid plus a drain valve for each coolant
tube. See Figure 3-12.
1. Radiator drain valve (typical)
1
Figure 3-11 Radiator Drain Valve, Typical
KD800--KD1750
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