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 TM 5-4120-386-14
5-19. EXPANSION VALVES - Continued.
REMARKS
ACTION
LOCATION/ITEM
Installation-
Continued
See
f.
Leak test refrigeration system.
3. Primary
See
Evacuate refrigeration system.
Expansion
g.
See
h.
Charge refrigeration system.
Valve
Install Top Covers.
See
i.
With dry nitrogen flowing
a.
4. Quench
through refrigerant system,
Expansion
braze valve to tubing.
Valve
Take care to avoid kinking capillary
tube.
b. Coil excess tubing.
c. Insert approximately
1.0 ounces (28.349 gins)
of thermal mastic in bulb
well.
d. Press sensing bulb (10)
into well and work back and
forth to distribute mastic
thoroughly and until capil-
lary end is approximately
1.0 inch (2.54 cm) beyond
open end of well.
e. Install two valve mounting
brackets (8) to housing using
two screws (5), two spacers
(7) and two locknuts (6).
See
Replace dehydrator.
f.
See
g. Leak test refrigeration system.
See
h . Evacuate refrigeration system.
See
Charge refrigeration system.
i.
See
Install Top Covers.
j.
5-68
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