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The S O S oil analysis program analyzes used oil to determine if the oil change interval is suitable for your specific engine. Consult your Caterpillar dealer about establishing an oil analysis program for your engine.Drain the Oil
Do not drain the oil when the engine 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 crankcase when the oil is warm. This draining method allows the waste particles that are suspended in the oil to be drained properly.Failure to follow this recommended procedure will allow the waste particles to be recirculated through the engine lubrication system with the new oil.
After the engine has been operated at normal operating temperature, STOP the engine.
Drain the oil according to the equipment on the engine.Note: Drain the oil into a suitable container. Dispose of the oil according to local regulations.
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Open the oil drain (1). After the oil has drained, close the oil drain.
If a suction device is inserted into the oil pan, ensure that the suction device is clean. This procedure will prevent dirt from entering into the oil pan. Be careful not to strike the engine oil suction tubes or the piston cooling jets.
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.Replace the Oil Filter Elements
Remove the oil filters (2) with a 1U-8760 Chain Wrench.
Clean the sealing surface of the mounting base. Ensure that all the old gasket is removed.
Caterpillar oil filters are built to Caterpillar specifications. Use of an oil filter not recommended by Caterpillar could result in severe engine damage to the engine bearings, crankshaft, etc., as a result of the larger waste particles from unfiltered oil entering the engine lubricating system. Only use oil filters recommended by Caterpillar.
Apply clean engine oil to the gasket of the new oil filter.
Do not fill the oil filters with oil before installing them. This oil would not be filtered and could be contaminated. Contaminated oil can cause accelerated wear to engine components or engine damage.
Place the oil filter in position. Tighten the oil filter until the gasket contacts the base. Tighten the oil filter by hand for an extra 3/4 turn (270 degrees). Do not overtighten the oil filter.Inspect the Used Oil Filter Elements
Cut the used oil filter element open with a 4C-5084 Oil Filter Cutter. Spread apart the pleats and inspect the filter material for metal debris.An excessive amount of debris in the element can indicate premature wear or a pending failure.
Use a magnet to differentiate between the ferrous metals and the nonferrous metals that are found in the filter.Ferrous metals in the filter indicate steel and cast iron parts of the engine. Nonferrous metals in the filter indicate aluminum parts, brass parts, or the bronze parts of the engine. Parts that may be affected include the following components: main bearings, rod bearings, turbocharger bearings, and cylinder heads.Due to normal wear and friction, finding small amounts of debris in the oil filter is common. If an excessive amount of debris is found, consult your Cat dealer to arrange for further oil analysis.Fill the Crankcase
Only use oils that are recommended by Caterpillar. For the proper oil to use, refer to this Operation and Maintenance Manual, "Refill Capacities and Recommendations" topic (Maintenance Section).
If the engine is equipped with an auxiliary oil filter system, extra oil must be added when filling the crankcase. If equipped with an auxiliary oil filter system that is not supplied by Caterpillar, follow the recommendations of the OEM.
Engine damage can occur if the crankcase is filled above the "FULL" mark on the oil level gauge (dipstick).An overfull crankcase can cause the crankshaft to dip into the oil. This will reduce the power that is developed and also force air bubbles into the oil. These bubbles (foam) can cause the following problems: reduction of the oil's ability to lubricate, reduction of oil pressure, inadequate cooling, oil blowing out of the crankcase breathers and excessive oil consumption.Excessive oil consumption will cause deposits to form on the pistons and in the combustion chamber. Deposits in the combustion chamber lead to the following problems: guttering of the valves, packing of carbon under the piston rings and wear of the cylinder liner.If the oil level is above the "FULL" mark on the oil level gauge, drain some of the oil immediately.
Remove the oil filler cap. Fill the crankcase through the oil filler tube only.For the amount of oil to use, see this Operation and Maintenance Manual, "Refill Capacities and Recommendations" topic (Maintenance Section).
Clean the oil filler cap. Install the oil filler cap.
To prevent engine damage, crank engine with fuel off to fill all filters before starting.Do Not crank engine for more than 30 seconds.
Close the fuel supply line and crank the engine until the oil pressure gauge indicates 70 kPa (10 psi). Open the fuel supply line.Allow the starting motor to cool for 2 minutes before cranking again.
Follow the Operation and Maintenance Manual, "Starting The Engine" procedure (Operation Section).Operate the engine at low idle for 2 minutes.This procedure will ensure that the lubrication system has oil and that the oil filters are filled with oil.Inspect the engine for oil leaks. Ensure that the oil level is at the "FULL" mark on the "ENGINE AT LOW IDLE WITH WARM OIL" side of the oil level gauge.
Stop the engine and allow the oil to drain back into the sump for a minimum of 10 minutes.
Remove the oil level gauge and check the oil level.Maintain the oil level to the "FULL" mark on the "ENGINE STOPPED WITH OIL COLD" side of the oil level gauge.