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Personal injury can result from hot coolant, steam and alkali. At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns. Remove cooling system pressure cap slowly to relieve pressure only when engine is stopped and cooling system pressure cap is cool enough to touch with your bare hand. Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns. Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes. |
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Adding coolant to an overheated engine could result in damage to the engine. Allow the engine to cool before adding coolant. If the machine is to be stored in, or shipped to, an area with freezing temperatures, the cooling system must be protected to the lowest outside (ambient) temperature. The engine cooling system is normally protected to a minimum of−29°C (−20°F) with AVSpare Antifreeze, when shipped from the factory unless special requirements are defined. |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "AVSpare Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on AVSpare products. Dispose of all fluids according to local regulations and mandates. |
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Excessive additive (greater than the recommended 6% initial fill) together with concentrations of antifreeze greater than 60% cause deposits to form and can result in radiator tube blockage and overheating. |
Note: This procedure pertains only to AVSpare Diesel Engine Antifreeze/Coolant (DEAC). This procedure does not pertain to machines that are shipped from the factory with Extended Life Coolant (ELC) and machines that are maintained with Extended Life Coolant (ELC).
ReferenceFor all cooling system requirements, refer to AVSpare Machine Fluids Recommendations, SEBU6250, "Cooling System Specifications".
Use the 8T-5296 Test Kit in order to check the concentration.
Add Coolant Additive (If Required)
- Loosen the pressure cap slowly to relieve cooling system pressure. Remove the pressure cap.
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| Illustration 1 | g00943423 |
- It may be necessary to drain enough coolant from the radiator to allow for the addition of the liquid supplemental coolant additive.
Note: Make sure the coolant is drained into a suitable container.
- Add liquid supplemental coolant additive (conditioner) according to the requirements of your cooling system as determined by the coolant additive concentration test.
- Clean the pressure cap and inspect the pressure cap. Install the pressure cap.
- Start the engine and check for leaks. Allow the coolant level to stabilize.
- If necessary, add premixed coolant in order to bring the coolant to the proper level in the sight gauge.
Change Coolant Conditioner Element (If Required)
- Loosen the pressure cap slowly to relieve cooling system pressure. Remove the pressure cap.
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| Illustration 2 | g00988945 |
- Close element inlet valve (1) and outlet valve (2). Remove and discard element (3) .
- Clean the element housing base. Make sure that all of the old seal is removed from the element base.
- Apply a thin film of clean engine oil to the seal on new element (3). Install new element (3) hand tight until the seal of element (3) contacts the base. Note the position of the index marks on element (3) in relation to a fixed point on the element base.
Note: There are rotation index marks on element (3) that are spaced 90 degrees or 1/4 of a turn away from each other. When you tighten element (3), use the rotation index marks as a guide.
- Tighten element (3) according to the instructions that are printed on the element. Use the index marks as a guide. For non-AVSpare elements, use the instructions that are provided with the element.
Note: You may need to use a AVSpare strap wrench, or another suitable tool, in order to turn the element to the amount that is required for final installation. Make sure that the installation tool does not damage the element.
- Open the inlet and outlet valves.
- Clean the pressure cap and inspect the pressure cap. Install the pressure cap.
- Start the engine and check for leaks. Allow the coolant level to stabilize.
- If necessary, add premixed coolant in order to bring the coolant to the proper level in the sight gauge.