ENGINE ARRANGEMENT 8N2948 - Caterpillar

Illustration 3 g03649639
Instruction film for the engine oil selector valve
(6) "MAIN RUN" for Filter 1
(7) "AUXILIARY RUN" for the Filter 1
(8) "BOTH FLOW" for normal engine operation
(9) "AUXILIARY RUN" for Filter 2
(10) "MAIN RUN" for Filter 2
Main Run Filter 1 - The oil selector valve is in this position at the start of the oil filter change procedure for Filter 2. 100% of the oil flows to Filter 1.
Auxiliary Run for Filter 1 - A small stream of oil fills Filter 2 with most oil flowing through Filter 1.
Both Flow - Normal position for engine operation. Oil is flowing equally to Filter 1 and to Filter 2.
Auxiliary Run Filter 2 - A small stream of oil fills Filter 1 with most oil flowing through Filter 2.
Main Run Filter 2 - The oil selector valve is in this position at the start of the oil filter change procedure for Filter 1. 100 % of the oil flows to Filter 2.
Position the oil selector lever on the MAIN RUN FOR FILTER 1 position to start the filter change procedure for Filter 2. When the selector lever is in the MAIN RUN FOR FILTER 1 position, all of the engine oil is flowing to Filter 1.
Remove used filter 2 and properly discard.
Clean the sealing surface of the filter mounting base. Make sure that the used oil filter gasket is removed.
Apply a thin film of clean engine oil to the seal of the new filter gasket.
Replace Filter 2 with a new oil filter.
Install the new filter by hand. Tighten the filter according to the instructions on the filter. Note: You may need to use a Cat strap wrench 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.
Position the oil selector lever to the AUXILIARY RUN FOR FILTER 1 position. Oil will slowly fill Filter 2.
Position the oil selector lever to the MAIN RUN FOR FILTER 2 position to repeat the procedure for Filter 2.
After both filters have been replaced and oil has filled both filters, position the oil selector valve to the BOTH FLOW position. Inspect the Used Oil Filter Elements
Cut the oil filter open with a 175-7546 Oil Filter Cutter Gp. Break apart the pleats and inspect the oil filter for metal debris. An excessive amount of metal debris in the oil filter 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 and turbocharger bearings and the following cylinder head components:
Camshaft bearings
Piston skirts
Rings
Crankshaft
Camshaft
Valve and valve components
Gears
Cylinder linersAluminum debris may indicate problems with the bearings of