TM 5-3805-290-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 8. Air Conditioning System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Check for restriction at liquid line (WP 1. If restriction is found, replace liquid
Temperature of Air Flow is
1.
line (WP 0193 00).
Partially Cool - Continued.
2. Recover refrigerant, evacuate, and
charge system with correct amount of
refrigerant. Measure refrigerant by
weight (WP 0191 00).
3. After system is charged, operate for a
minimum of 10 minutes (TM 5-3805-
290-10) and perform Performance
Checks for Air Conditioning System
(WP 0018 00) to verify correct
operation of AC system.
4. If problem still exists, go to Test 6.
6. Check for restriction at cab filters.
1. Replace cab filters or remove any
restrictions found (TM 5-3805-290-
10).
2. Recover refrigerant, evacuate, and
charge system with correct amount of
refrigerant. Measure refrigerant by
weight (WP 0191 00).
3. After system is charged, operate for a
minimum of 10 minutes (TM 5-3805-
290-10) and perform Performance
Checks for Air Conditioning System
(WP 0018 00) to verify correct
operation of AC system.
N OT E
Pressure should rise when compressor is not in operation.
7. The system has air or moisture in
1. Recover refrigerant (WP 0191 00) and
system and does not have a full charge
repair leaks.
of refrigerant. Perform Refrigerant
2. If a large amount of refrigerant was
Leakage Test (WP 0018 00) to
lost, perform Refrigerant Compressor
determine location of leak.
Oil Check (WP 0018 00).
3. Evacuate system and re-charge system
with correct amount of refrigerant (WP
0191 00).
4. After system is charged, operate for a
minimum of 10 minutes (TM 5-3805-
290-10) and perform Performance
Checks for Air Conditioning System
(WP 0018 00) to verify correct
operation of AC system.
0008 00-93