TM 9-4120-385-14
4. Wrap solenoid and quench valve (4) with wet rags to act as a heat sink during
debrazing and prevent damage to valves.
5. Nitrogen purge. Refer to Paragraph 5-6.
6. Debraze valve connections and remove valve (4). Inspect and replace if necessary.
d.
INSTALLATION.
1. Wrap solenoid valves and replacement expansion valve (4) with wet rags to act as
a heat sink and prevent damage to valves.
2. Nitrogen purge. Refer to Paragraph 5-6.
3. Braze replacement expansion valve (4) in place.
4. Secure expansion valve (4) in place with two bolts (1), spacers (3), and
lockwashers (2).
5. Inject approximately 1 ounce of thermal mastic onto sensing bulb.
CAUTION
Use care to avoid kinking or breaking sensing line.
6. Insert sensing bulb into position by moving back and forth to distribute thermal
mastic and until sensing bulb is fully seated.
7. Install replacement dehydrator. Refer to Paragraph 5-22.
8. Perform leak test. Refer to Paragraph 5-3.
9. Evacuate system. Refer to Paragraph 5-7.
10. Charge system with refrigerant. Refer to Paragraph 5-8.
11. Install top panel and secure with 11 screws and rain seal washers.
12. Install access cover and secure with two screws.
13. Install canvas cover and secure with 16 screws and rain seal washers.
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