Note: Inspect the water pump and the water temperature regulator after the cooling system has been drained. This is a good opportunity to replace the water pump, the water temperature regulator and the hoses, if necessary.
Drain
- Stop the engine and allow the engine to cool. Loosen cooling system filler cap (2) slowly in order to relieve any pressure. Remove cooling system filler cap (2) .
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Pressurized System: Hot coolant can cause serious burns. To open the cooling system filler cap, stop the engine and wait until the cooling system components are cool. Loosen the cooling system pressure cap slowly in order to relieve the pressure. |
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| Illustration 1 | g00740037 |
Typical example (1) Expansion tank (2) Cooling system filler cap | |
- Open the cooling system drain valve (if equipped). If the cooling system is not equipped with a drain valve, remove the cooling system drain plugs.
Remove the drain plug from cylinder block (3). Remove the drain plug for water cooled exhaust manifold (4) or (5). Remove the hoses for engine oil cooler (6) and (7), if equipped. Remove hose for the heat exchanger on the 3054 engine. Remove the drain plug for the heat exchanger on the 3056 engine. Allow the coolant to drain.
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| Illustration 2 | g00740076 |
(3) Drain plug on the cylinder block | |
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| Illustration 3 | g00822686 |
(4) Drain on the water cooled exhaust manifold for the 3054 Marine Generator Set | |
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| Illustration 4 | g00822695 |
(5) Drain plug on the water cooled exhaust manifold for the 3056 Marine Generator Set | |
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| Illustration 5 | g00822687 |
Engine oil cooler (6) Hose for the outlet of the coolant (7) Hose for the inlet of the coolant | |
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| Illustration 6 | g00822694 |
(8) Heat exchanger for the 3056 Marine Generator Set (9) Drain plug for the heat exchanger | |
| NOTICE |
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Dispose of used engine coolant properly or recycle. Various methods have been proposed to reclaim used coolant for reuse in engine cooling systems. The full distillation procedure is the only method acceptable by Caterpillar to reclaim the used coolant. |
For information regarding the disposal and the recycling of used coolant, consult your Caterpillar dealer or consult Caterpillar Dealer Service Tool Group:
Outside Illinois: 1-800-542-8665Inside Illinois: 1-800-541-8665Canada: 1-800-523-8665Flush
- Flush the cooling system with clean water in order to remove any debris.
- Close the drain valve (if equipped). Clean the drain plugs. Install the drain plugs. For the proper torque, refer to the Specifications Manual, SENR3130, "Torque Specifications".
- Fill the cooling system with clean water. Install the cooling system filler cap.
| NOTICE |
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Fill the cooling system no faster than 19 L (5 US gal) per minute to avoid air locks. |
- Start and run the engine at low idle until the temperature reaches 49 to 66°C (120 to 150°F).
- Stop the engine and allow the engine to cool. Loosen the cooling system filler cap slowly in order to relieve any pressure. Remove the cooling system filler cap. Open the drain valve (if equipped) or remove the cooling system drain plugs. Allow the water to drain. Flush the cooling system with clean water. Close the drain valve (if equipped). Clean the drain plugs. Install the drain plugs. For the proper torque, refer to the Specifications Manual, SENR3130, "Torque Specifications".
Fill
| NOTICE |
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Fill the cooling system no faster than 19 L (5 US gal) per minute to avoid air locks. |
- Fill the cooling system to the top with the ELC. Refer to the Operation and Maintenance Manual for more information on cooling system specifications. Do not install the cooling system filler cap.
- Start and run the engine at low idle. Increase the engine rpm to 1500 rpm. Run the engine at 1500 rpm for one minute in order to purge the air from the cavities of the engine block. Stop the engine.
- Add the ELC into the cooling system until the cooling system is full to the top.
- Clean the cooling system filler cap. Inspect the gasket for the cooling system filler cap. If the gasket for the cooling system filler cap is damaged, discard the old cooling system filler cap and install a new cooling system filler cap. If the gasket for the cooling system filler cap is not damaged, use a 9S-8140 Pressurizing Pump in order to pressure test the cooling system filler cap. The correct pressure for the cooling system filler cap is stamped on the face of the cooling system filler cap. If the cooling system filler cap does not retain the correct pressure, install a new cooling system filler cap.
- Pour the ELC into the recovery tank until the coolant reaches the "COLD FULL" mark. Do not fill the tank above "COLD FULL" mark.
- Clean the cooling system filler cap. Install the cooling system filler cap. Start the engine. Inspect the cooling system for leaks and for proper operating temperature.