TM 9-4110-255-14
5-41. TUBING AND FITTINGS TESTING, REPAIR, AND REPLACEMENT .
This task covers:
a. Testing
b. Removal
c. Installation
INITIAL SETUP
Materials/Parts:
General Safety Instructions:
Silicone RTV
WARNING
1, Appendix E
Tie Down Strap(s) (As Required)
High voltage and rotating parts are used in
29, Appendix E
the refrigeration unit. Personal injury can
Equipment Conditions:
result if battery is connected.
Doors, panels, guards open/removed as necessary.
a. Testing. Leak test the tubing and fittings (para 5-13).
NOTE
Repair consists of replacing damaged or leaking tubing and/or fittings.
b. Removal.
(1) Discharge (para 5-10) the refrigeration system.
(2) If a flare connection was leaking, loosen flare nut and cut the damaged flare off the tubing end.
(3) Purge (para 5-11) and de-braze (para 5-12) any fitting or tubing that was leaking or was too short to flare.
(4) Remove any silicone RTV remaining in evaporator frame grommets.
c. Installation.
(1) Purge (para 5-11) and braze (para 5-12) any loose tubing or fitting connections.
(2) Flare tubing end where damaged flare was removed or on end of new tube if it was too short to flare.
(3) Replace dehydrator (para 5-17).
(4) Leak check (para 5-13), evacuate (para 5-14), and charge (para 5-15) the refrigeration system.
(5) Apply silicone RTV into evaporator frame grommets to seal evaporator enclosure.
(6) Secure capillary lines to pipe illustrated using tie down strap(s) as necessary.
5-79
