AC COMPRESSOR EXCESSIVELY NOISY - Continued

DRAFT

TB 9-2320-279-13-1

AC COMPRESSOR EXCESSIVELY NOISY - Continued

WARNING

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

comply may result in injury to personnel.

VISUAL INSPECTION

Inspect AC compressor belts for looseness and

damage.

(a) If AC compressor belts are missing, damaged,

or loose, replace or tighten belts as required

(WP 0022). Verify repair, go to Step 4 of this

fault.

(b) If AC compressor belts are tight and free from

damage, go to Step 3 of this fault.

VISUAL INSPECTION

NOTE: Do not disconnect AC hoses from AC

compressor during repairs unless required. If AC hoses

need to be disconnected during repair, recover R-134a

refrigerant (WP 0050) before disconnecting AC hoses.

Then replace AC condenser dryer (WP 0025) and

evacuate and charge system (WP 0050) after repairs

are completed.

Inspect AC compressor mounting bracket for damage

and missing or loose hardware.

(a) If AC compressor mounting bracket is damaged

or hardware is missing or loose, replace or

tighten damaged missing or loose mounting

hardware (WP 0023). Verify repair, go to Step 4

of this fault.

CAUTION: Do not flush AC condenser dryer, AC

compressor, or AC expansion valve. After flushing

system, add required refrigerant oil or damage to

equipment may result.

(b) If AC compressor mounting bracket is secure

and free from damage and missing hardware:

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

2. Flush system (WP 0050).

3. Replace AC compressor (WP 0023).

4. Replace AC condenser dryer (WP 0025).

5. Evacuate and charge system with new

R-134a refrigerant (WP 0050).

6. Verify repair, go to Step 4 of this fault.

HEMAC142