TB-9-2320-279-13-1

TECHNICAL BULLETIN; AIR CONDITIONING SYSTEM

OPERATOR’S, UNIT AND DIRECT SUPPORT MAINTENANCE MANUAL, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LISTS

DECEMBER 2005

TB-9-2320-279-13-1 - Page 144 of 524

TB 9-2320-279-13-1

(0013-1 blank)/0013-2

0013

AC COMPRESSOR EXCESSIVELY NOISY

DRAFT

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INITIAL SETUP:

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Maintenance Level

Field Level Maintenance

Equipment Condition

Shut off engine (TM 9-2320-279-10).

Parking brake applied (TM 9-2320-279-10).

Wheels chocked (TM 9-2320-279-10).

Tools and Special Tools

None

Materials/Parts

None

Personnel Required

MOS 52C, Utilities equipment repairer

References

TM 9-2320-279-10

TM 9-2320-279-20

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KNOWN INFO

AC operates.

POSSIBLE PROBLEMS

AC compressor damaged.

AC compressor belts loose or damaged.

AC compressor mounting bracket damaged

or hardware missing or loose.

AC compressor faulty.

1.

Is AC compressor free from

damage?

Recover R-134a

refrigerant (WP 0050).

Replace AC

compressor

(WP 0023) and AC

condenser dryer

(WP 0025).

Evacuate

and charge system

(WP 0050).

Verify

repair, go to Step 4 of

this fault.

NO

YES

START

Read WARNING on

page 0013-3.

WARNING

TEST OPTIONS

Visual inspection.

REASON FOR QUESTION

Damaged compressor may

cause excessive noise.