DRAFT
TB 9-2320-364-13&P-1
AC DOES NOT COOL OR COOLS INADEQUATELY - Continued
WARNING
Moving engine components can cause severe injury. Keep away from fan, belts, and pulleys while
engine is running.
Wear protective goggles and nonleather gloves when servicing air conditioner system. Failure to
comply may result in injury to personnel.
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PRESSURE TEST
Inspect AC test set recovery/recycling manifold high-
side gage reading.
(a) If gage reading is not lower than the range for
the ambient temperature indicated in the chart
shown on page 0015-11 for normal high-side
pressure, go to Step 8 of this fault.
(b) If gage reading is lower than the range for the
ambient temperature indicated in the chart
shown on page 0015-11 for normal high-side
pressure, go to Step 7 of this fault.
VISUAL INSPECTION
(1)
Shut off engine (TM 9-2320-364-10).
(2)
Inspect AC hoses from system low-side AC service
valve to system high-side AC service valve for frost
and cool spots.
(a) If hoses are not free from frost and cool spots:
1. Recover R-134a refrigerant (WP 0053).
2. Replace restricted AC hose (WP 0039).
3. Replace AC condenser dryer (WP 0024).
4. Evacuate and recharge system
5. Verify repair, go to Step 22 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 hoses are free from frost and cool spots:
1. Recover R-134a refrigerant (WP 0053).
2. Purge and flush system (WP 0053).
3. Replace AC compressor (WP 0022).
4. Replace AC condenser dryer (WP 0024).
5. Evacuate and recharge system with new
R-134a refrigerant (WP 0053).
PLSAC207
6. Verify repair, go to Step 22 of this fault.