0323549 JOHNSON EXHAUST HOUSING, Outer

If the engine is equipped with duplex oil filters, the engine oil filter elements can be changed while the engine is in operation. This is useful if the oil filter elements require more frequent replacement than the engine oil. Refer to "Replacing the Engine Oil Filters During Engine Operation (Duplex Oil Filter System Only)".The oil change interval can be affected by several factors:
Air/fuel ratio
Ambient air conditions
Engine application
Fuel type
Oil type
Size of the oil sumpThe S O S oil analysis program analyzes used oil in order to determine if the oil change interval is suitable for your specific engine.Drain the Oil
Do not drain the oil when the engine is cold. As the oil cools, 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 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 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. DO NOT drain the oil into the bilge sump. Dispose of the oil according to local regulations.
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Oil drain plug
Note: If a suction device is used in order to remove the oil from the oil pan, ensure that the suction device is clean. This 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 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 70 15 N m (52 11 lb ft).
If the engine has an oil drain valve, open the valve. 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. The two marks on the valve must be turned so that one mark points to the pump and the second mark points to 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 in order to drain the crankcase. After the oil has drained, close the drain valve. Disconnect the coupling.
Replace the engine oil filter elements before filling the crankcase with new oil. Replace the Oil Filter Elements
Replace the engine oil filters when any of the following conditions occur:
Every oil change
The engine oil filter differential pressure reaches 103 kPa (15 psi).
The oil filter elements have been used for 1000 service hours.Note: Do not attempt to clean the used oil filters. Used oil filters will retain waste particles. The used oil filters would not filter the oil properly.Service tools are available to aid in the service of oil filters. Consult your Caterpillar 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.Replacing the Engine Oil Filters With the Engine Stopped (Standard Oil Filters)
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Standard Oil Filters
Right hand service
Perform the following procedure after the oil has been drained.
Remove used oil filters and properly discard the used oil filters.
Illustration 3 g00103713
Typical filter mounting base and filter gasket
Clean the sealing surface of the filter mounting base. Make sure that the former oil filter gaskets are removed.
Apply a thin film of clean engine oil to the seal of each new filter gasket.
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.
Install the filters by hand. Tighten each filter until the sealing surface contacts the base. Note the position of the index marks on each filter in relation to a fixed point on the filter base. Note: Caterpillar filters have rotation index marks that are spaced 90° or 1/4 of a turn away from each other. When you tighten the filters, use the rotation index marks as a guide.
Tighten each filter according to the instructions that are printed on the filter. Note: You may need to use a Caterpillar strap wrench, or another suitable tool, in order to turn the filters to the amount that is required for final installation. Make sure that the installation tool does not damage the filters. Do not overtighten the oil filter.Replacing the Engine Oil Filters During Engine Operation (Duplex Oil Filter System Only)
This filter contains hot, pressurized oil that can cause burns and fire hazards, which may result in bodily injury or death. Follow the instructions given in this Operation and Maintenance Manual and stop the engine if rapid air movement exists to blow the oil.
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Duplex Oil Filter System
Left hand service
If the engine is equipped with duplex oil filters, the engine oil filter elements can be changed while the engine is in operation. This is useful if the oil filter elements require more frequent replacement than the engine oil.