Section 4 Cooling System; General; Inspecting The Cooling System - Kohler 24RCL Manual

4.1 General

WARNING
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before
working on
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--) lead last
when reconnecting the battery.
Disabling the generator set.
cause severe injury or death.
generator set or equipment connected to the set, disable the
generator set as follows: (1) Press the generator set off/reset
button to shut down the generator set. (2) Disconnect the
power to the battery charger, if equipped. (3) Remove the
battery cables, negative (--) lead first. Reconnect the negative
(--) lead last when reconnecting the battery. Follow these
precautions to prevent the starting of the generator set by the
remote start/stop switch.
WARNING
Hot coolant and steam.
Can cause severe injury or death.
Before removing the pressure cap,
stop the generator set and allow it to
cool. Then loosen the pressure cap
to relieve pressure.
TP-6907 5/16
the generator set.
Accidental starting can
Before working on the

Section 4 Cooling System

The generator set engine is water cooled. The cooling
system includes the radiator and cooling fans.
Components of the cooling system are shown in
Figure 4-1 and Figure 4-2. Cooling fans are described in
Section 4.10.
The closed-loop engine cooling system includes the
engine water pump, which circulates the cooling water,
and the engine thermostat which opens and closes the
cooling water flow to maintain a constant engine
temperature. Refer to the engine service manual for
thermostat and water pump service information.
Before servicing, allow the engine to cool. Release
pressure from the cooling system before removing the
pressure cap. To release pressure, cover the pressure
cap with a thick cloth and then slowly turn the cap
counterclockwise to the first stop. Remove the cap after
pressure has been completely released and the engine
has cooled. Check the coolant level at the overflow
bottle.

4.2 Inspecting the Cooling System

To prevent generator shutdown or damage because of
overheating:
Keep the cooling air inlets clean and unobstructed.
D
Inspect the radiator's exterior for obstructions and
D
remove dirt and foreign material with a soft brush or
cloth to avoid damaging the radiator fins.
Check the hoses and connections for leaks and
D
replace any cracked, frayed, or spongy hoses.
Check the condition and tension of the radiator water
D
pump belt(s).
Check the rubber seal of the radiator's pressure cap.
D
Remove dirt and other debris from the pressure cap
and filler neck. Replace a cracked or deteriorated
cap.
Section 4 Cooling System 55