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Snow groomer BISON
11.12.4
Flushing the cooling system
WARNING
Risk of poisoning
Coolant is toxic if swallowed.
►
Never swallow coolant.
►
Do not fill coolant into containers otherwise used for drinking.
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Coolant should be stored out of reach of children.
WARNING
Risk of scalding
Since the cooling system is pressurised, hot coolant can spray out when the cooling system is
opened and scald skin and eyes.
►
Only open the cooling system when the coolant temperature is below 40 °C (104 °F).
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Slowly unscrew the cap and release the pressure before opening completely.
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Wear suitable protective gloves, protective clothing and safety glasses.
NOTICE
Risk of contamination of drinking water
Operating fluids (oil, fuel, coolant, etc.) are water contaminating materials.
►
Operating fluids and components that come into contact with operating fluids, e.g. filters or seal-
ing rings, should be disposed of in accordance with the environmental regulations.
►
Follow the legal provisions applicable to the place of operation.
■
Flush the cooling system with clean water in order to remove any debris.
■
Close the drain valves.
■
Fill the cooling system with a mixture of clean water and Caterpillar Fast Acting Cooling Sys-
tem Cleaner. Add 0.5 l (1 pint) of cleaner per 15 l (4 US gal) of the cooling system capacity.
Install the cooling system filler cap. Fill the cooling system no faster than 19 l (5 US gal) per
minute to avoid air locks.
■
Start and run the engine at low idle for a minimum of 30 min. The coolant temperature should
be at least 82 °C (180 °F). Improper or incomplete rinsing of the cooling system can result in
damage to the copper and other metal components. To avoid damage to the cooling system,
make sure to completely flush the cooling system with clear water. Continue to flush the sys-
tem until all signs of the cleaning agent are gone.
■
Stop the engine and allow the engine to cool. Loosen the cooling system filler cap slowly in
order to relieve any pressure. Remove the cap. Open the drain valves. Allow the water to
drain. Flush the cooling system with clean water. Be sure to flush the heater and any related
supply and return lines. Close the drain valve.
BISON 908930245 - 30367
Operating and Maintenance Manual
11 - Maintenance
179
(255)
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