Table 4-2. Organizational Troubleshooting-Continued.

TM 5-4120-386-14

Table 4-2. Organizational Troubleshooting - Continued.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2 . INSUFFICIENT COOLING-Continued

Inspect evaporator inlet air filter for dirt.

Step 4.

Step 5. See whether temperature selector switch is set incorrectly or is

defective.

Adjust setting or replace switch. (Refer to paragraph 4-24.)

Step 6. Check evaporator outlet louver to see whether it is bent, or stuck in the

closed position.

Repair or replace louver. (Refer to paragraph 4-18.)

Step 7. Observe evaprator fan motor to see whether it is worn or defective.

Report fault to direct support maintenance personnel,

or replace motor. (Refer to paragraph 4-31.)

Step 8. Check to see whether evaporator impeller fan is loose or defective.

Tighten setscrew or replace impeller fan. (Refer to paragraph 4-30.)

3. EVAPORATOR OR CONDENSER FAN MOTOR FAILS TO OPERATE

Step 1.

Make sure that power cable is properly connected.

Connect cable.

S t e p 2. Check for bad fan motor. (Refer to paragraph 4-31 and 4-35.)

Replace motor. (Refer to paragraph 4-30 and 4-34.)

S t e p 3. Check evaporator or condenser fan motor for binding.

Relieve binding or replace fan motor. (Refer to

S t e p 4. Check continuity of receptacle or plus terminals.

Replace terminals or receptacles. (Refer to paragraph

4-15