ARMY TM 9-4120-380-14
AIR FORCE TO 35E9-136-21
RELAY SOCKETS (K6-K11. TR1 AND TR2) This task covers inspection, testing, removal and
Disconnect input power to the air conditioner before performing any internal
maintenance Voltages used can KILL. Shutting the unit off at the control panel does not
disconnect unit power.
(1) Disconnect air conditioner input power at source; and
(2) Remove control box assembly (paragraph 4 27).
b. Check that relay socket and terminals are not cracked, broken, loose or corroded.
Use multimeter to measure resistance from each socket contact to its associated terminal (see fig FO-2.). Resistance
should be 0 5 ohms or less. Replace socket if defective
Tag and disconnect leads
For relay sockets K6-K11, remove two screws (4), flat washers (3), and locknuts (2)
Remove socket (5) from panel
For relay sockets TR1 and TR2, remove two screws (4), lockwashers (2), and flat washers (3)
e. Remove socket (5) from panel