Buhler 2375, 2335, 2425, 2290, 2360 manual Ethylene Glycol Propylene Glycol

SECTION 3 - LUBRICATION AND MAINTENANCE

EVERY 2000 HOURS OR 2 YEARS

The coolant added to the engine must meet specific requirements. Use coolant from one of the following sources:

NOTE: Factory fill is a fully formulated coolant mixture, (pink in color). Propylene and ethylene glycol can be mixed in the cooling system.

A.Refill the cooling system using a low silicate antifreeze which meets Engineering Standard GM 6038-M, or which contains no more than 0.1% anhydrous alkali metasilicate and meets either Engineering Standard GM 1825-M or GM 1899-M, which are performance specifications.

Use soft water in the coolant mixture. Contaminants in hard water neutralize the corrosion inhibitor components. Water must not exceed 300 ppm hardness or contain more than 100 ppm of either chloride or sulfate.

Antifreeze must be used in any climate for both freeze and boiling point protection. Cummins Engine Company, Inc. recommends a 50% concentration level, 40% - 60% range of ethylene glycol or propylene glycol in most climates. Antifreeze at 68% concentration provides the maximum freeze protection and must never be exceeded under any condition. Antifreeze protection decreases above 68%

	Ethylene Glycol	Propylene Glycol
40%	-23°C (-10°F)	-21°C (-6°F)
50%	-37°C (-34°F)	-33°C (-27°F)
60%	-54°C (-65°F)	-40°C (-56°F)
68%	-71°C (-90°F)	-63°C (-82°F)

NOTE: Propylene glycol antifreeze protection levels CANNOT be checked using the same hydrometer as would be used with ethylene glycol antifreeze.

You must check the concentration level using a refractometer. This tool is available from your Buhler Versatile dealer under part #FGCC2800DS. Both propylene and ethylene glycol protection levels (of a mixture of both) can be measured with the refractometer.

Once the protection level of the coolant is determined (ratio of water to antifreeze), the mixture must contain one unit of Cummins DCA4 (dry chemical additive) for every gallon of mix. A DCA unit is equal to 42.5 g (1.5 dry ounces) or 120 ml (4 liquid ounces). Your Buhler Versatile dealer can assist you in obtaining the DCA4 additive.

IMPORTANT: Failure to maintain the DCA4 in the cooling system will cause cooling system corrosion and engine failure.

IMPORTANT: Check the concentration of DCA4 with a test kit, available from Cummins and Fleetguard through your Buhler Versatile dealer.

IMPORTANT: Do not add cold coolant to a hot engine. Engine castings can be damaged. Allow the engine to cool to below 50°C (120°F).

Start and run the engine until normal operating temperature is reached. Stop the engine and allow the coolant to cool.

NOTE: The coolant level will drop as coolant is pumped around the system.

Remove the radiator cap and add coolant to the radiator to bring the coolant level to the bottom of the filler neck. Install the radiator cap.

NOTE: If the engine is not going to be operated immediately following the coolant and filter change, run the engine for one hour to ensure that the chemical conditioner within the system is dispersed into the cooling system.

The coolant capacity will vary based on the tractor model:

Model	Capacity
2290	59 L (15.6 gal)
2335	59 L (15.6 gal)
2375	59 L (15.6 gal)
2360	60 L (15.9 gal)
2425	60 L (15.9 gal)

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