TM 5-4310-335-14
NOTE
Overhaul of the moisture separator does not require removal of the thermostat
(24), electrical connector (27) or nameplate (33), unless replacement of damaged
parts is necessary. In this case steps (9) through (13) provide instructions for the
removal of these parts.
(9)
Remove screws (22, fig. 6-6) and washers (23) which secure the thermostat (24) to the block
(30). Pull the thermostat from the block, unsolder the wires and remove thermostat (24).
Remove tubing from wires.
(10)
Remove screws (25) and washers (26). Pull out connector, unsolder the connector wires and
remove connector (27).
(11)
Remove screws (28), washers (29) and mounting blocks (30).
(12)
Chip the litharge and glycerin cement from the wire end of the heater cavity, and using a drift pin,
tap the heater (31) out of the cavity.
(13)
Remove screws (32) securing name-plate (33) to body (21).
WARNING
Dry cleaning solvent, P-D-680, used to clean parts is potentially dangerous to
personnel and property. Do not use near open flame or excessive heat. Flash
point of solvent is 100 . - 138 . (38 to 59 ).
F
F
C
C
b. Cleaning. Clean all metallic parts of the moisture separator assembly using cleaning solvent, Fed.
Spec. P-D-680, and dry thoroughly using filtered compressed air.
c. Inspection.
(1) Inspect metal parts for dents, scratches, breaks and cracks (body, shell, baffle, etc.).
(2) Inspect hardware for burrs and rough edges and thread damage.
(3) Inspect preformed packing and tubing for breaks, cracks or other damage.
(4) Inspect other parts for damage.
(5) Repair any damage or replace parts which obstruct moving parts or could cause damage to the
equipment.
d. Repair.
(1) Replace damaged metal parts (body, shell, baffle, etc.).
(2) Remove burrs and rough edges on hard-ware, replace hardware if thread-damaged.
(3) Replace damaged or defective parts as necessary.
(4) Replace all preformed packing.
(5) Replace cap tape.
e. Assembly.
(1) Apply grease, MIL-G-4343B to all preformed packings, backup rings and male threads.
(2) Install preformed packing (19, fig. 6-6) on seat assembly (18). Assemble spring (20), seat
assembly (18) and cylinder (17) into body (21). Torque the cylinder to 50 inch-pounds (.5809 kg-
m).
(3) Place preformed packing (16) on seat (15) and screw seat into body (21). Torque to 50 (.5809
kg-m) - 65 (.7607 kg-m) inch-pounds.
(4) Apply Loctite sealant to end of inlet tube (14) and insert tube end with sealant into body (21).
(5) Install baffle (10) in shell (8) and secure with two screws (9).
(6) Place preformed packing (7) on plug (6) and screw plug into the shell. Torque the plug to 200
inch-pounds (2.3234 kg-m).
(7) Install nut (11), preformed packing (12) and backup ring (13) on body (21).
(8) Apply grease, MIL-G-4343B to the inside of the shell from the top thread to one inch above the
thread. Screw body (21) into shell (8), maintaining the gaging dimension of 0.284 inch (.7214
cm) between the lower face of the shell and the upper shoulder of the body. Torque the locknut
to 500 inch-pounds (5.7809 kg-m).
(9) Install a suitable metal plug with sealing gasket in the safety outlet port of the shell. Proof
pressure test the partially assembled moisture separator, in an environmental chamber using
clean filtered air and MIL-L-6085A oil.
WARNING
Exercise extreme care when working with high pressure air to prevent injury to
personnel or damage to equipment. Do not attempt to tighten any fitting or
perform any work on equipment when the system is under pressure. Do not
tamper with any pressure relief valves.
(10) Connect a short length of tubing to the drain port and connect a non-recoil fitting to the end of the
tubing. Apply 4900 psig (344.4700 kgs per sq cm) - 5000 psig (351.5000 kgs per sq cm) air
pressure to the inlet port and 60 psi (4.2180 kgs per sq cm) - 100 psi (7.0300 kgs per sq cm) oil
pressure to the sensing port for one minute. No leakage in excess of 3 cc/hr is permitted except
at the dump port.
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