Chapter 6. Repair of Air Conditioner

TM 5-4120-355-14

General.

6-1.

The compresor is hermetically sealed and cannot be repaired. In case of failure, the compressor must be replaced.

6-2.

a. Removal. Refer to paragraph 5-13 and remove compressor.

b. lnstallation. Refer to paragraph 5-13 and install compressor.

Evaporator Coil.

6-3.

a. Remove top panel and discharge grille (para 4-15).

b. Refer to figure 4-15 and remove evaporator coil.

c. Repair. Repair minor leaks or holes by soldering with silver solder ( class 4 or 6A, Spec. QQ-S-561) per Spec.

MIL-B-7663. If damage is excessive, replace evaporator coil.

d. Installation.

(1) Refer to figure 4-15 and install evaporator coil.

(2) install top panel and discharge grille ( para 4-15).

(3) Leak test the entire system (para 4-40).

(4) Evacuate the system (para 5-9).

(5) Recharge the system (para 5-9).

64. Condenser Coil.

a. Removal.

(1) Evacuate the system (para 5-9).

(2) Remove condenser coil grille (fig. 4-4).

(3) Remove three screws holding filter drier brackets to shell.

(4) Pull condenser coil, fig. 4-4, from unit and unsolder as required.

b. Repair. Repair minor leaks or holes by soldering with silver solder (class 4 or 6A, Spec. QQ-S-561 ) per Spec.

MlL-B-7663. If damage is excessive, replace condenser coil.

c. Installation.

(1) Replace condenser coil (fig. 4-4).

(2) Leak test the entire system (para 440).

(3) Evacuate and recharge the system (para 5-9).

(4) Replace three screws in filter-drier bracket.

(5) Replace condenser coil grille (fig. 4-4).

6-1