TM 9-2350-256-34-1Section VI. TRANSMISSION OIL FILTER3-31.DescriptionLocated on each side of the top of the converter housingare identical two-element filter assemblies. The right-side assembly filters all the oil pumped by the input-pressure oil pump that is located immediately below thefilter cavity in the converter housing. The left-sideassembly filters all oil returning from the torque converterbefore distribution to the lubrication system.Each filter assembly consists of a head assembly andtwo element assemblies. Each head assembly consistsof a head, relief valve, two springs, a valve seat, andsnap ring. Each filter element is replaceable as a unit3-32.OperationThe filter assemblies are bolted vertically into theconverter housing cavities. Oil to be filtered is pumpedinto the cavities surrounding the filters. The filterelements are hollow disks of fine mesh wire screen. Oilflows into the elements and into the perforated tube onwhich the elements are stacked. Foreign matter in theoil collects on the outer surfaces of the filter elements.Filtered oil flows up the perforated tubes, through thefilter heads and into the converter housing.Should the filter packs become clogged, pressure in thefilter cavities will rise until the relief valves open. Whenthe relief valves open, oil flows directly into the hydraulicsystem.VIEW B. OIL FILTER HEAD ASSEMBLY3-33.RemovalRefer to TM 9-2350-256-20 for removal and installationof transmission oil filters.3-34.DisassemblyRefer to figure 3-9 for disassembly of transmission oilfilter.3-35.AssemblyAssemble the oil filter in reverse order of disassembly.VIEW A. OIL FILTERVIEW C. OIL FILTER HEAD ASSEMBLYFigure 3-9. Transmission oil filter assembly disassembly and assembly.CHANGE 7 3-17
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