tested by supplying an equal-gauged pressure of 50
b. Inspection.
P S I to each of the ports, then increasing the
(1) Inspect all parts for cracks, breaks, and
pressure at the high pressure inlet port until the
other damage.
buttons "pop up". The difference between the two
(2) Examine all threaded areas for thread
pressure readings should be 20 PSI15% for the
damage. Replace all defective parts.
y e l l o w button and 35 PSI 15% for the red
(3) Inspect differential pressure indicator for
m e c h a n i c a l damage. R e p l a c e e n t i r e u n i t i f
button. Replace the differential pressure indicator
defective.
if it is inoperative or not within tolerance.
b. When required to test the effectiveness of
c. Installation.
filtration, and consequently proper operation of the
(1) Install differential pressure indicator (7),
pop-up button indicators, submit a sample of the
to tank with washers (9 and 10), and screw (8),
product from the down-stream side of the filter-
elbows (1), and connectors (6) if removed.
s e p a r a t o r to the nearest petroleum laboratory.
(2) Connect the tube assemblies (2 and 3) by
Whenever this is accomplished, ensure that the
tightening the fitting nut (4) to elbows (1) and
sample container is clean. Record dates samples are
c o n n e c t o r s (6). Apply sealing compound MIL-S
7916 to all threaded fittings.
submitted and record test results for the filter
separator. Refer to TM 10-1101. If test results
(3) Start up operation of filter-separator as
described in paragraph 2-2.
show that the solids contents of samples exceeds 2.0
M G / L , replace filter elements.
a. The differential pressure indicator may be
Section VIII. MAINTENANCE OF TANK AND FRAME ASSEMBLY
4-17. General
(4) Clean metal parts in cleaning solvent and
dry thoroughly. Refer to TM 38-230.
The tank and frame assembly is of welded
(5) Inspect tank for bends, cracks, and
alum inure alloy construction.
broken welds.
4-18. Tank and Frame Assembly
(6) Straighten and weld frame as required.
a. Cleaning, Inspection, and Repair.
(7) Spot paint or repaint equipment as
(1) Refer to paragraphs 3-5 b, 4-12 a, 4-15 a
necessary with paint in accordance with MIL-T-
and
remove
filter-separator
components
as
704, Type C, color 34087.
necessary to facilitate repair.
b. Installation. Install components that were
(2) Open water drain valve (36, fig. 1-2, sheet
removed by referring to paragraphs 3-5 f, 4-12 d, 4 -
2 of 2) and remove pipe plug (37) to completely
14 d, and 4-15 c as applicable. Install pipe plug
drain tank prior to welding.
(37, fig. 1-2, sheet 2 of 2), apply sealing compound
(3) Refer to figure 1-2, sheets 1 and 2. All
MIL-S-7916 for threads.
data plates except the identification plate are at-
tached to the tank with adhesive and should not be
removed.
