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 TM 55-1905-222-14
b.
Each case of the duplex strainer has a cleaning knife and a metal edge element with. particle size retention
of 0001. inch (25 microns). The cleaning knives are rotated around the elements by turning the ratchet handles. The
head is equipped with a control valve so that flow can be directed to one element while the other is serviced.
c.
The fuel filter/water separator works in a series of three stages to progressively clean the diesel fuel. In the
primary stage (separation), liquid and solid contamination down to 30 microns are separated out by centrifugal action. In
the secondary stage (coalescing), minute particles of liquid contamination tend to bead on the lower inner wall of the
shell, accumulating and eventually falling to the bottom of the bowl. In the final stage (filtration), fuel flows through the
replacement element where the minute solids are removed.
1-18
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