AC DOES NOT COOL OR COOLS INADEQUATELY - TB-9-2320-364-13-P-10180

DRAFT

TB 9-2320-364-13&P-1

0015

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

POSSIBLE PROBLEMS

Verify preliminary tests.

Was work package 0012 (AC

AC control circuit faulty.

Heater/Evaporator Blower

REASON FOR QUESTION

AC condenser dryer desiccant contaminant in

Operates But No Cold Air

AC refrigerant system.

If work package 0012 or 0014

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.

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AC expansion valve faulty.

Moisture in AC refrigerant system.

Go to work package

Air or other contaminant in AC refrigerant

0012 (AC Heater/

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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(0015-1 blank)/0015-2