Section 4 - Lubrication & Maintenance
Every 10 Hours or Daily
If the engine coolant is low, add coolant through the radiator cap (1) accessed on top of the hood..
CAUTION: THE COOLING SYSTEM OPERATES UNDER PRESSURE WHICH IS CONTROLLED BY THE RADIATOR CAP. IT IS DANGEROUS TO REMOVE THE CAP WHILE THE SYSTEM IS HOT. ALWAYS TURN THE CAP SLOWLY TO THE FIRST STOP AND ALLOW THE PRESSURE TO ESCAPE BEFORE REMOVING THE CAP ENTIRELY. WEAR GLOVES WHEN REMOVING THE CAP.
The coolant added to the engine must meet specific requirements.. Use a low silicate antifreeze which meets Engineering Standard GM
NOTE: Factory fill is a fully formulated coolant mixture (pink in color). Propylene or ethylene glycol can be mixed in the cooling system.
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 sulphate..
Antifreeze
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% | ||
50% | ||
60% | ||
68% | ||
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|
|
1
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. Both propylene and ethylene glycol protection levels (of a mixture of both) can be measured with the refractometer (P/N: CC2806).
Once the protection level of the coolant is decided (ratio of water to antifreeze), the mixture must contain one unit of Cummins DCA4 (dry chemical additive) per gallon of coolant.. A DCA unit is equal to 42..5 g (1..5 dry ounces) or120 ml (4 liquid ounces).. Your Buhler Versatile dealer can assist you in obtaining the DCA4 additive..
IMPORTANT: Failure to maintain DCA4 in the cooling system will cause cooling system corrosion and engine failure.
IMPORTANT: The concentration of DCA4 should be checked with a test kit, available from Cummins / Fleetguard or through your Buhler Versatile dealer (P/N: CC2602).
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).
