TM 55-2090-201-14&P
3-38. FILTER ELEMENT (#).
This task covers:
a.
Inspection
c.
Repair/Replace
b.
Removal
d.
Installation
INITIAL SETUP
Test Equipment
None
Tool
Tool Kit, General Mechanics
Material/Parts
Filter element MIL-F-52847 Type II
Filter element MIL-F-52847 Type III
"0" ring
Equipment, Condition
Personnel Required
1
LOCATION
ITEM
ACTION
REMARKS
NOTE
Differential pressure as used throughout the operat-
ing procedures refers to the difference in pressure
between the inlet and outlet.
Pressure differentials
in the filter elements result from elements becoming
clogged with particles and other contaminants which
impede the flow of fluid.
As fluid flowing through
an element is reduced, pressure increases on one side
of the element (inlet side) and is reduced on the
other side (outlet).
The difference between these
pressures is referred to as differential pressure.
NOTE
Replace prefilter element when the differential pres-
sure in the stage reaches 30 psid (2109.2 gm sq cm)
and coalescer element when differential pressure
reaches 25 psid (1757.7 gm sq cm).
Inspection is performed by determining differential pressure
calculations.
3-235
