c. Cleaning and Inspection (fig. 21).
(3) Position the four cushion clamps (4) on the
upper frame (1).
(1) Clean all metallic parts with cleaner P-S-661.
(4) Attach the instruction plate (3) to the four
(2) Inspect all components for bends, breaks,
cushion clamps (4) using the four screws (2)
scratches, damaged threads, and other
and locknuts (5).
defects.
e. Installation (fig. 21).
(3) Replace all rubber mounts (12).
(1) Position the tank assembly (8) to the
d. Assembly (fig. 21).
mounting bracket on the lower frame (9) and
(1) Position the four rubber mounts (12) on the
secure using the two bolts (14) and washers
lower frame (9) and secure to the frame using
(15). Apply torque to screws 5 to 7 pound-
the four screws (13), washers (11), and nuts
feet.
(10).
(2) Replace the fuel tank accessories (par. 18d).
(2) Position the nameplate (6) on the tank
(3) Position the upper frame (1) on the lower
assembly (8) and secure using the four
frame (9) and secure the coupling nuts on the
screws (7).
upper frame.
Section VIII. PERIODIC SURVEILLANCE TEST
53. General
b. Connect the inlet elbow (12) to a regulated, high
Fourth echelon maintenance personnel will recall
pressure, hydrostatic line provided with a suitable
and test water separator groups from the field at 12-
pressure gage and atmospheric vent line.
month intervals.
c. Apply 3000 psi hydrostatic pressure for one
54. Test Procedure
minute to the water separator. Vent the hydrostatic
Test the water separator, without the relief valve.
pressure to atmosphere and inspect for failure or
Refer to figure 3.
deformation. Disconnect from hydrostatic pressure line.
d. Connect to a high pressure pneumatic line and
a. Cap the drain port and plug the outlet port and
apply 2000 psi pneumatic pressure for two minutes and
relief valve port using suitable high pressure caps and
submerge in clean water. No leakage is permitted in the
plugs.
two-minute test.
Warning
Note. The maximum allowable leakage permitted for the
Be extremely careful when working with
water separator is 3 cc per hour.
pneumatic equipment to prevent injury to
personnel and damage to property resulting
e. Vent the pneumatic pressure to atmosphere and
from careless handling or possible equipment
disconnect the water separator from the high pressure,
failure. Perform all testing in an assigned area,
pneumatic line. Remove the test plugs and caps. Blow
cleared of all unauthorized personnel. Make
dry with clean dry air.
certain all equipment is properly cleaned and
f. Metal stamp nameplate on water separator with
secured. Clamp all pneumatic equipment
month and year of proof testing. Discard water separator
being tested firmly in a vise or other holding,
when due for third proof testing.
suitable testing fixture. Do not. attempt to
adjust or disassemble equipment under
pressure. Use a heavy metal shield, equipped
with suitable safety glass windows to protect
personnel whenever proof pressure testing.
AGO 5548A
35
