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Page Title:
AIR CONDITIONER DOES NOT COOL CAB |
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 TM 10-3930-673-20-1
2
26. AIR CONDITIONER DOES NOT COOL CAB.
INITIAL SETUP
References
Tools and Special Tools
TM 10-3930-673-10
Tool Kit, General Mechanic's: Automotive
TM 9-4910-571-12&P
(Item 18, Appendix F)
Refrigerant Leak Detector (Item 13, Appendix F)
Equipment Condition
Engine shut down (TM 10-3930-673-10)
Parking brake on (TM 10-3930-673-10)
Wheels chocked (TM 10-3930-673-10)
START
WARNING
1
KNOWN INFO
TEST OPTIONS
Read WARNING on
Air conditioner does not cool cab.
Visual inspection.
following page.
POSSIBLE PROBLEMS
REASON FOR QUESTION
Is cab heater/air conditioner
Light OFF, switch faulty.
This question eliminates possible
Air conditioner belt loose, faulty.
problems and determines where
switch functioning (green
Lines, fittings leaking, faulty.
troubleshooting continues.
switch light ON, blower
Condenser obstructed, damaged.
operating)?
Filter-drier blocked, faulty.
Evaporator obstructed, damaged.
Compressor faulty.
Go to Electrical System
Troubleshooting,
NO
Fault 30, Air conditioner
does not operate.
YES
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