Section VI. TRANSMISSION OIL FILTER
Located on each side of the top of the converter housing
are 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 the
filter cavity in the converter housing. The left-side
assembly filters all oil returning from the torque converter
before distribution to the lubrication system.
Each filter assembly consists of a head assembly and
two element assemblies. Each head assembly consists
of a head, relief valve, two springs, a valve seat, and
snap ring. Each filter element is replaceable as a unit
The filter assemblies are bolted vertically into the
converter housing cavities. Oil to be filtered is pumped
into the cavities surrounding the filters. The filter
elements are hollow disks of fine mesh wire screen. Oil
flows into the elements and into the perforated tube on
which the elements are stacked. Foreign matter in the
oil collects on the outer surfaces of the filter elements.
Filtered oil flows up the perforated tubes, through the
filter heads and into the converter housing.
Should the filter packs become clogged, pressure in the
filter cavities will rise until the relief valves open. When
the relief valves open, oil flows directly into the hydraulic
VIEW B. OIL FILTER HEAD ASSEMBLY
Refer to TM 9-2350-256-20 for removal and installation
of transmission oil filters.
Refer to figure 3-9 for disassembly of transmission oil
Assemble the oil filter in reverse order of disassembly.
VIEW A. OIL FILTER
VIEW C. OIL FILTER HEAD ASSEMBLY
Figure 3-9. Transmission oil filter assembly disassembly and assembly.
CHANGE 7 3-17