ENGINE COOLING SYSTEM

Service Specifications

Cooling System Capacity .............................................24 liters (25.3 U.S. Quarts) Cooling system drain, flush, and refill interval ....... Every 2000 hours of operation or each year, whichever occurs first. Reservoir Coolant Fluid Level Check Interval.............Every 50 hours of operation

Thermostat

Starts to open ................................................................................... 81°C (178°F) Completely open ...............................................................................96°C (205°F) Radiator cap ........................................................... 103.4 kPa, 1 bar (15 psi)

Coolant Mixture

A mixture of 50% Ethylene Glycol and 50% water must be used in this machine. This mixture is used if the lowest ambient temperature is above -37°C (-34°F). If the ambient temperature is lower, adjust the mixture to 60% Ethylene Glycol and 40% water. It is recommended that Ethylene Glycol and water be used in your machine all year. NOTE: After you fill the cooling system, mix the Ethylene Glycol and water completely by running the engine at operating temperature for approximately five minutes. This procedure must be done when the machine is in temperatures below 0°C (32°F).

WARNING: Hot coolant can spray out if radiator cap is removed. To remove radiator cap: Let system cool, turn to first notch, then wait until all pressure is released.

Scalding can result from fast removal of radiator cap. Check and service engine cooling system according to maintenance instructions.

SA023

Coolant Fluid Level

The coolant fluid level is monitored at the instrument cluster. When the coolant level indicator illuminates, add coolant to the radiator as required to raise the coolant level.

IMPORTANT: Cooling System is under pressure. Before adding coolant, allow radiator to cool and remove radiator cap SLOWLY.

RD98K316 621D-2M007

Check the coolant reservoir fluid level when the coolant is cold and the engine is stopped. DO NOT remove the radiator cap during this check. The coolant level must be between the FULL and ADD marks on the reservoir. Add coolant as required to raise the coolant level to the FULL mark.

Radiator Fluid Level

Check the radiator coolant level when the coolant is cold and the engine is stopped. Remove the radiator cap. The coolant level must be up to the radiator cap opening. NOTE: If the radiator coolant level is low and the coolant reservoir level is at the FULL mark, check for air leaks in the hose between the radiator and coolant reservoir. IMPORTANT: Only add the correct mixture of ethylene glycol and water to the radiator.

BD00M062

1.RADIATOR CAP

WARNING: Hot coolant can spray out if radiator cap is removed. To remove radiator cap: Let system cool, turn to first notch, then wait until all pressure is released. Scalding can result from fast removal of radiator cap. Check and service engine cooling system according to maintenance instructions.

Cleaning the Cooling System

Drain, flush, and replace the engine coolant every 2000 hours of operation or each year, whichever occurs first. Clean the system and replace the coolant if the coolant becomes dirty or has the color of rust. DO NOT remove the radiator cap if the coolant is hot. Have a container available that is capable of holding 34.1 liters (9.0 gal). 1.Open the radiator drain valve and remove the radiator cap.

BD00M031

1.RADIATOR DRAIN VALVE 2.After all coolant is removed. Close the drain valves.

3.Add cleaning solution to the cooling system and fill the cooling system with clean water. Follow the directions included with the cleaning solution. 4.After you drain the cleaning solution flush with clean water and drain the water. 5.Put a 50% mixture of Ethylene

Glycol and water in the radiator.

See Coolant Mixture in this manual. 6.Start the engine and run at idle speed until the engine is at operating temperature. Check the instrument cluster monitor, if the monitor illuminates. Add coolant as required. 7.Install the radiator cap.