TM 5-3810-300-24&P-3
Oil Filters 4.2
Fig. 3. Full-Flow Oil Filter Details and Relative Location of Parts
movement by a coil spring at the top. A hollow center
Oil Filter Maintenance
stud serves as the outlet passage from the filter as well
as securing the shell in place.
With the use of detergent lubricating oils, the color of the
lubricant has lost value as an indicator of oil cleanliness
or proper filter action. Due to the ability of the detergent
compounds to hold minute carbon particles in
suspension, heavy duty oils will always appear dark
colored on the oil level dipstick.
Heavy sludge deposits found on the filter elements at the
time of an oil change must be taken as an indication that
the detergency of the oil has been exhausted. When this
occurs, the oil drain interval should be shortened. The
removal of abrasive dust, metal particles and carbon
must be ensured by replacement of the oil filter elements
at the time the engine oil is changed.
Selection of a reliable oil supplier, strict observation of
his oil change period recommendations and proper filter
maintenance will ensure trouble-free lubrication and
longer engine life.
Replace Oil Filter Element
Replace the element in either the full-flow or by-pass
type oil filter assembly (Figs. 3 and 4) as follows:
1. Remove the drain plug from the filter shell or the
filter adapter or base and drain the oil.
2. Back out the center stud and withdraw the shell,
Fig. 4. By-Pass Oil Filter Details
element and stud as an assembly. Discard the
filter element and the shell gasket.
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