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 TM 55-1905-219-14-6
3-148. LUBE OIL FILTER, HOSES AND HOUSING - MAINTENANCE INSTRUCTIONS.
The maintenance instructions for the lube oil filter, hoses and housing are contained in the following
paragraphs:
DESCRIPTION
PARAGRAPH
Oil Filter - (Ful l Flow)
Oil Filter - (By-Pass) - Hoses and Housing
3-148.1.
LUBE OIL FILTER (FULL FLOW) - MAINTENANCE INSTRUCTIONS.
a. The full-flow type lubricating oil filter is installed ahead of the oil cooler in the lubrication system.
b. The filter assembly consists of a replaceable element enclosed within a shell which is mounted on an
adaptor. When the filter shell is in place, the element is restrained from movement by a coil spring.
c. All of the oil supplied to the engine by the oil pump passes through the filter before reaching the
various moving parts of the engine. The oil is forced by pump pressure through a passage in the filter adaptor
to the space surrounding the filter element. Impurities are filtered out as the oil is forced through the element
to a central passage surrounding the center stud and out through another passage in the filter adaptor and then
to the oil cooler.
d. A valve, which opens at approximately 18-21 psi (124-145 kPa), is located in the filter adaptor and will
by-pass the oil directly to the oil cooler should the filter become clogged.
3-2546
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