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| Illustration 1 | g03776324 |
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(1) Oil drain valve
(2) Oil drain fitting | |
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Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. |
| NOTICE |
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Ensure that the engine is stopped before performing this procedure. Attach a DO NOT OPERATE tag to the starting controls. |
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 with the oil warm, immediately after the engine is stopped. 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 by using one of the following methods. Use the method that corresponds to the equipment on the engine.
Note: Drain the oil into a suitable container. Dispose of fluids according to local regulations.
- If the engine has an oil drain valve, remove the oil drain plug and open the valve to drain the oil. After the oil has drained, close the valve.
- If the engine has a pump for removing dirty oil, connect a hose to the outlet of the pump. Place the hose in a suitable container. Open the valve for the drain line. Operate the pump until the crankcase is empty. Close the valve to the drain line. Disconnect the hose.
- If the oil drain valve has a quick-connect coupling, attach the coupling. Open the drain valve to drain the crankcase. After the oil has drained, close the drain valve. Disconnect the coupling.
- If the engine does not have a drain valve or a pump, remove an oil drain plug. Allow the oil to drain. After the oil has drained, clean the drain plug and clean the fitting for the drain plug. Install the drain plug. Tighten the drain plug to
80 ± 12 N·m (59 ± 9 lb ft) Note: Ensure that the dirty oil is thoroughly drained from the pan. Caterpillar recommends a thorough cleaning of the oil pan with a vacuum and with rags to remove all the old oil. This process will help prevent inaccurate oil analysis results and/or shortened life of the oil.
Note: If a suction device is used to remove the oil from 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.
Replace the Engine Oil Filters
Replace the engine oil filters when any of the following conditions are met:
- Every oil change
- The engine oil filter differential pressure reaches
160 kPa (23.2 psi) .
Service tools are available to aid in the service of oil filters. Consult your Cat dealer for the part names and the part numbers. Follow the instructions that are supplied with the service tools. If the service tools are not used, perform the following appropriate procedure.
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Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. |
Perform the following procedure after the oil has been drained.
- Attach a suitable container to bracket (1) to collect oil as the cover is removed.
- Open drain valve (2) and drain the oil from the filter housing.
- Remove bolts from cover (3) and remove cover. Clean the cover.
- Remove o ring seal (4). Clean and Inspect the o ring seal for damage or deterioration. Replace the o ring seal if necessary.
- Remove the filter element (5).
- Clean inside the filter housing.
- Inspect the new oil filter element. Install the new filter element.
- Install the o ring seal. Ensure that the o ring seal is properly seated.
- Install the cover. Ensure that the cover is properly seated. Tighten the bolts to the proper torque.
- Close the oil drain valve and remove the container from the bracket.
- Clean up any oil that has spilled. Properly dispose of all material used to clean up oil.
- Start the engine and check for oil leaks.
- Check the oil level on the "LOW IDLE" side of the oil level gauge. Maintain the oil level between the "ADD" and "FULL" marks on the "LOW IDLE" side of oil level gauge.
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| Illustration 2 | g03003541 |
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Left Side Engine Oil Service | |
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| Illustration 3 | g03788904 |
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G3520H Right Side Engine Oil Service | |
Inspect the Used Oil Filter Elements
Cut the used oil filter element open with a utility knife. Cut the filter element free from the end caps. Spread apart the pleats and inspect the element for metal debris. An excessive amount of debris in the element can be an indication of wear or a pending failure.
Use a magnet to differentiate between the ferrous metals and the nonferrous metals that are found in the element. Ferrous metals can be an indication of wear on the steel and the cast iron parts of the engine. Nonferrous metals can be an indication of wear on the aluminum parts, the 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.
Pieces of aluminum may indicate problems with the bearings of the front gear train or the rear gear train. If aluminum is found, inspect the vibration damper and the idler gear bearings.
Due to normal wear and friction, finding small amounts of debris in the oil filter element is not uncommon. If an excessive amount of debris is found in the oil filter element, consult your Cat dealer to arrange for further oil analysis.
- Remove the oil filler cap. Fill the crankcase through the oil filler tube only. Clean the oil filler cap. Install the oil filler cap.
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NOTICE To prevent crankshaft damage and to prevent bearing damage, manually operate the prelube pump. To prevent crankshaft damage and to prevent bearing damage, crank the engine with the fuel supply line closed for 15 to 30 seconds. This procedure will ensure that all the oil filters are filled with oil before the engine is started.
- Close the fuel supply line. 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 this 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 and the oil filters are filled with oil. Inspect the engine for oil leaks. Ensure that the oil level is between the "ADD" and the "FULL" marks on the "LOW IDLE" 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 between the "ADD" and the "FULL" marks on the "ENGINE STOPPED" side of the oil level gauge.
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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. |
Note: For the correct amount of oil to use, refer to this Operation and Maintenance Manual, "Refill Capacities". For information on the type of oil to use, refer to this Operation and Maintenance Manual, "Fluid Recommendations".