D11R Track-Type Tractor C32 Engine Retrofit Supplement Caterpillar

Reference: For information about adding an extender to your cooling system, refer to Operation and Maintenance Manual, "Cooling System Coolant Extender (ELC) - Add" . For additional information, refer to Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations" or consult your Cat dealer.

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NOTICE
Make sure you read and understand the information in the topics Safety and Cooling System Specifications for all information pertaining to water, antifreeze and supplemental coolant additive requirements before you proceed with maintenance of the cooling system.

Flushing the ELC from the Cooling System

If an ELC was previously used, flush the cooling system with clean water. No other cleaning agents are required.

Flushing a Standard Coolant from the Cooling System

If you change to an ELC from another type of coolant, use a Caterpillar cleaning agent to flush the cooling system. After you drain the cooling system, thoroughly flush the cooling system with clean water. All of the cleaning agent must be removed from the cooling system.

Drain the Cooling System

Illustration 1	g00122865
The radiator cap is positioned in the top of the hood.

1. Slowly loosen the radiator cap in order to relieve system pressure. Remove the radiator cap.

2. The drain valve is under the radiator. Open the drain valve. Install a 12.7 mm (.5 inch) pipe into the drain valve. The pipe requires 1/2-14 NPTF threads. Clamp a hose to the pipe in order to direct the coolant into a suitable container. Allow the coolant to drain into a suitable container.

   Note: D11R C32 Repower drain instruction

   1. Loosen the small bolt on the side of the drain valve. Open the drain valve plug in order to begin coolant flow. Allow the coolant to drain into a suitable container.

3. Close the drain valve. Fill the system with a solution which consists of clean water and of cooling system cleaner. The concentration of the cooling system cleaner should be 5 to 10 percent.

4. Start the engine. Run the engine for 90 minutes. Stop the engine. Drain the cleaning solution into a suitable container.

5. While the engine is stopped, flush the system with water. Flush the system until the draining water is clear.

6. Close the drain valve.

7. Add the Extended Life Coolant.

   Reference: For the correct amount of ELC, refer to Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations".

8. Start the engine. Run the engine without the radiator cap until the thermostat opens and the coolant level stabilizes.
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   Illustration 2	g01228797

9. Add coolant in order to maintain the coolant level above the sight gauge in the coolant tank.

10. If you need to add coolant daily, check the cooling system for leaks.

11. Inspect the radiator cap and the radiator cap seal for debris, for foreign material, or for damage. Clean the radiator cap with a clean cloth. Replace the radiator cap if the radiator cap is damaged.

12. Install the radiator cap.

13. Stop the engine.