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TM 9-4120-367-14
TM 07592B-14/1
6.16 EXPANSION VALVE. -Continued
Location/Item
Action
Remarks
Removal
NOTE
The main thermal expansion valve is
hermetically sealed and cannot be
repaired.
a. Discharge the refrigerant system.
Paragraph 6.4
b. Remove housing top covers.
c. Remove mastic from bulb well.
d. Remove bulb from well.
e. Unsolder thermal expansion valve from tubing
Paragraph 6.3
and restrictor (distributor).
Installation
a. Install new drier/fitter.
Paragraph 6.14
b. Wrap valve with wet rag to prevent overheating
valve during soldering.
c. Solder valve to tubing and restrictor (distributor).
d. Insert approximately one ounce of thermal mastic
in bulb well.
e. Insert sensing bulb of expansion valve.
f. Move bulb back and forth to distribute mastic.
g. Set bulb approximately 1 inch beyond open end.
h. Nitrogen purge system.
Paragraph 6.5
i.
Leak test and evacuate.
Paragraphs 6.2 and 6.6
j.
Charge refrigerant system.
Paragraph 6.8
k. Replace covers.
6-56
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