RETAINER 1726236 - Caterpillar

Remove cover (2) and spring (7). Remove O-ring seal (6), retainer (8), and oil filter elements (9).
Clean cover (2), spring (7), O-ring seal (6), and retainer (8). Clean inside the housing.
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.
Ensure that the new oil filter elements are in good condition. Install the new oil filter elements.
Inspect the O-ring seal. Ensure that the surfaces for the O-ring seal are clean. Install a new O-ring seal if the old O-ring seal is damaged or deteriorated.
Install retainer (8), spring (7) and cover (2). Ensure that the retainer and the spring are properly seated between the oil filter elements and the cover.
Start the engine according to this Operation and Maintenance Manual, "Starting The Engine" procedure (Operation Section). Check for oil leaks.Replacing the Engine Oil Filters During Engine Operation
If the engine is equipped with duplex oil filters, the engine oil filter elements can be changed during engine operation. This procedure is useful if the oil filter elements require more frequent replacement than the engine oil.
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.
Warning: Vapor Explosion. May cause serious injury or death. Read the Operation and Maintenance Manual before conducting any maintenance on the oil filter.
Illustration 4 g06068708
Control valve for the duplex oil filters
Move the control valve to the "AUX RUN" position to change the main oil filter elements. Move the selector valve to the "MAIN RUN" position to change the auxiliary oil filter elements.
Allow the oil pressure gauge for the oil filter that is being changed to reach a "ZERO" pressure reading.
Open the "FILL" valve for a minimum of 5 minutes to fill the new oil filter elements.
Close the "FILL" valve. Rotate the control valve to the "RUN" position for the oil filter that was serviced.Inspect the Used Oil Filter Elements
Cut the used oil filter element open with a utility knife. Remove the metal wrap. 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 may indicate early 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 may indicate wear on the steel and the cast iron parts of the engine. Nonferrous metals may indicate 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.Aluminum debris may indicate problems with