TM 9-4120-371-14
c. Removal
(2) Unwrap insulation from suction line so that sensing bulb is exposed. Loosen screws and nuts in
clamps. Pull bulb out of clamps.
*(3) Disconnect flare nut on external equalizer line from expansion valve.
*(4) Remove the two screws, flat washers, lock washers, and spacers that attach the valve body to its
mounting bracket.
**(5) Remove the screw, flat washer, lock washer, nut, and clamp that secures valve to mounting
bracket.
*(6) Remove remaining valve components except for body flange. (See figure 5-21.)
NOTE
If valve body flange is not damaged, do not remove (debraze) it from the system.
*(7) If valve body flange is to be removed, purge the system with nitrogen and debraze the two tubes.
**(8) Purge the system with nitrogen and debraze the three 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.
**(2) Purge the system with nitrogen and braze the three tubing joints. (See para 5-7 and 5-8.)
*(4) Place cap screws, lock washers, flat washers, and spacers through bracket and valve body flange.
**(5) Using screw, lock washer, flat washer, clamp and nut. Secure valve to bracket.
*(6) Be sure that valve components are properly alined and secure power assembly to body flange.
*(7) Connect flare nut on external equalizer line to expansion valve.
(8) Insert the sensing bulb into its mounting loop clamps in its original position and tighten the screws
and nuts. Be sure the sensing bulb is making good metalto-metal contact with the suction line.
(9) Replace the insulation tubing that was removed from the sensing bulb and expansion valve
(11) Leak test all newly connected joints and those in the repair area. (See para 5-9.)
(13) Evacuate and charge the refrigerant system. (See para 5-10 and 5-11.)
*Effective for Keco Model F18T-2S, and A.R.E. Model CVP-20-5/6-08.
**Effective for Keco Model F18T-2SA.
5-48