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TM5-4120-377-14
(c) When the proper setting is obtained, install the seal cap.
(9) Turn unit OFF.
(10) Remove thermometer.
(11) Cover the sensing bulb and suction line with insulation tubing that was removed in step (2) above.
Secure tubing in place using tape, item 11, Appendix E.
(12)
(13)
(14)
(15)
Close service valves on unit.
Remove gages or service manifold from service valves.
Install hose connection protective caps.
Using screwdriver, secure service valve cover with four screws and flat washers.
c. Removal
(1) Discharge the refrigerant system per paragraph 5-6.
(2) Unwrap insulation tubing from suction line so that sensing bulb is exposed. Note location and
position of bulb for reinstallation. Loosen screws and nuts in clamps. Pull bulb out of clamps.
(3) Using wrench, remove two cap screws, lock washers, flat washers, and spacers that attach valve
body to bracket and power assembly.
(4) Carefully remove the power assembly, cage assembly, and gaskets.
NOTE
If valve body flange is not damaged, do not remove (debraze) it from the system.
(5) If valve body flange is to be removed, purge the system with nitrogen and debraze the two tubes. (See
para 5-7 and 5-8.)
d. Installation
(1) If valve body flange was removed, purge the system with nitrogen and braze the two tubing joints.
(See para 5-7 and 5-8.)
(2)
(3)
(4)
flange.
(5)
nuts. Be
See figure 5-16 for valve component arrangement.
Place cap screws, lock washers, flat washers, and spacers through bracket and valve body flange.
Be sure that valve components are properly assembled and alined. Secure power assembly to body
Insert sensing bulb into its mounting loop clamps in its original position, and tighten the screws and
sure sensing bulb is installed in the original position and is making good metal-to-metal contact with
suction line.
(6) Reinstall insulation tubing that was removed from sensing bulb and liquid quench expansion valve
connections. Secure insulation tubing with tape, item 11, Appendix E.
(7)
(8)
5-34
Replace the dehydrator. (See para 5-13.)
Leak test all newly connected joints and those in the repaired area. (See para 5-9.)
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