3608 Engine Caterpillar

The establishment of an S·O·S oil analysis program will enable an evaluation of the used oil. The evaluation can be used to determine the oil change interval that is suitable for your specific generator. Change the oil when oil analysis determines that the oil has reached the condemning limit.

In the absence of oil analysis, change the oil for the generator when the engine oil is changed.

Change the Oil

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Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.

Do not drain the oil when the oil is cold. As the oil cools, suspended waste particles settle on the bottom of the oil pan. The waste particles are not removed when the cold oil is drained. Drain the oil when the oil is warm. This draining method allows proper draining of the waste particles that are suspended in the oil.

Failure to follow this recommended procedure will allow the waste particles to be recirculated through the lubrication system with the new oil.

1. After the generator has been operated at normal operating temperature, STOP the engine.
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   NOTICE
   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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates.

2. Drain the oil according to the equipment that is installed.
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   Illustration 1	g00716362
   (1) Oil drain (2) Oil filler

   1. Open the oil drain. After the oil has drained, close the oil drain.

   2. If a suction device is inserted into the oil pan, ensure that the suction device is clean. This will prevent dirt from entering into the oil pan.

   3. If a suction device that attaches to the oil drain is used, ensure that the suction device is clean. Attach the suction device to the oil drain. Open the oil drain. After the oil has drained, close the oil drain and remove the suction device.

   4. If the oil drain valve has a “quick connect” coupling, attach the coupling. Open the drain valve in order to drain the crankcase. After the oil has drained, close the drain valve. Disconnect the coupling.

3. Replace the oil filter. See this Operation and Maintenance Manual, "Generator Oil Filter - Change".

4. Fill the oil sump with clean engine oil. Fill the oil sump through the oil filler tube only. For the amount of oil to use, see this Operation and Maintenance Manual, "Refill Capacities". Clean the oil filler cap. Install the oil filler cap.

5. Follow this Operation and Maintenance Manual, "Starting The Engine" procedure (Operation Section). Operate the generator. This will ensure that the lubrication system has oil and that the oil filter is filled with oil. Inspect the lubrication system for oil leaks.

6. Stop the engine and allow the oil to drain back into the oil pan for a minimum of ten minutes.

7. Check the oil level in the sight gauge. Maintain the oil level to "FULL". Do not overfill the sump.