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DRAFT
TB 9-2320-364-13&P-1
AC DOES NOT COOL OR COOLS INADEQUATELY
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INITIAL SETUP:
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Maintenance Level
Materials/Parts
Field Level Maintenance
Gloves, Rubber (Item 2, Appendix E)
Equipment Condition
Personnel Required
Shut off engine (TM 9-2320-364-10).
MOS 52C, Utilities equipment repairer (2)
Parking brake applied (TM 9-2320-364-10).
References
Wheels chocked (TM 9-2320-364-10).
TM 9-2320-364-10
Tools and Special Tools
TM 9-2320-364-20
Goggles (Item 1, Appendix F)
Tool Kit, General Mechanic's (Item 9, Appendix F)
Leak Detector, Refrigerant (Item 1, Appendix H)
Reclaimer, Refrigerant (Item 2, Appendix H)
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NOTE
Work package 0012 or 0014 must be performed before performing this work package.
AC condenser dryer must be replaced whenever system R-134a refrigerant is recovered.
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START
KNOWN INFO
Power to AC system OK.
AC heater/evaporator blower OK.
TEST OPTIONS
1.
POSSIBLE PROBLEMS
Verify preliminary tests.
AC control circuit faulty.
Heater/Evaporator Blower
REASON FOR QUESTION
AC condenser dryer desiccant contaminant in
Operates But No Cold Air
AC refrigerant system.
From Ducts During AC
is not performed before
AC refrigerant oil contaminant in AC
Operations) or work package
performing this work
refrigerant system.
package, preliminary
0014 (AC Compressor Does
AC system charge low.
checks have not been
Not Shut Off or Cycles
AC system leaking.
completed and inaccurate
Constantly) performed?
Restricted AC hoses.
results may occur.
AC compressor faulty.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
AC expansion valve faulty.
Moisture in AC refrigerant system.
Air or other contaminant in AC refrigerant
0012 (AC Heater/
NO
system.
Evaporator Blower
Operates But No
AC condenser core faulty.
Cold Air From Ducts
AC system overcharged.
During AC
YES
AC condenser dryer faulty.
Operations).
AC evaporator core faulty.
Low pressure switch faulty.
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