Quench Thermal Expansion Valve

TM 5-4120-352-14

c. Installation. Install thermal xpansion

5-29. Quench Thermal Expansion

valve (fig. 5-9) as follows:

Valve.

(1) Solder valve to tubing.

a. General. The quench thermal expansion

(2) Insert approximately one ounce of thermal

valve is hermetically sealed and cannot be repaired.

mastic in bulb well. Insert sensing bulb of expan-

b. Removal. Remove the quench valve as fol-

sion valve and move bulb back and forth to distrib-

lows:

ute mastic and set bulb approximately one inch be-

(1) Refer to figure 6-1 and discharge the re-

yond open end.

grigerant system.

(3) Install housing top covers (figure 4-5).

(2) Remove housing rear top cover (figure 4-

(4) Refer to figure 6-2 and charge the refrig-

5).

erant system.

(3) Soften matic in bulb well (fig. 5-10) and re-

move bulb from well. Take care to prevent damage

to capillary tube.

(4) Remove two screws, spacers, self-locking

nuts and valve mounting brackets.

(5) Unsolder valve from tubing.

5-22