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TM5-4120-387-14
(12) Close charging valves on unit.
(13) Remove gages or service manifold from charging valves.
(14) Install hose connection protective caps.
(15) Using screwdriver, secure charging 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, lockwashers, 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) See figure 5-17 for valve component arrangement.
(3) Place cap screws, lockwashers, flat washers, and spacers through
bracket and valve body flange.
(4)
Be sure that valve components are properly assembled and alined.
Secure power assembly to body flange.
(5) Insert sensing bulb into its mounting loop clamps in its original
position, and tighten the screws and nuts.
Be 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) Replace the dehydrator. (See para 5-13.)
5-46
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