AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM DUCTS DURING AC OPERATIONS (Cont)

DRAFT

TB 9-2320-279-13-1

AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM

DUCTS DURING AC OPERATIONS - Continued

WARNING

Wear protective goggles and nonleather gloves when servicing air conditioner system. Failure to

comply may result in injury to personnel.

Remove rings, bracelets, wristwatches, neck chains, and any other jewelry before working around

vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry or tools may short

across electrical circuits or terminals and cause damage to equipment or severe burns or

electrical shock to personnel.

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VISUAL INSPECTION

(1) Inspect AC heater/evaporator core for damage and

blockage from debris.

(a) If AC heater/evaporator core is damaged:

1. Recover R-134a refrigerant (WP 0050).

2. Replace AC heater/evaporator core

3. Replace AC condenser dryer (WP 0025).

4. Evacuate and charge system (WP 0050).

5. Verify repair, go to Step 27 of this fault.

(b) If AC heater/evaporator core is blocked with

debris, remove eight screws and top heater

cover (WP 0037), loosen four screws and pull

center heater cover aside (WP 0038), and

remove blockage. Verify repair, go to Step 27 of

this fault.

damage and blockage, go to Step 4 of this fault.

HEMAC146