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 117 of 524

TB 9-2320-279-13-1

0012-31

AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM

DUCTS DURING AC OPERATIONS - Continued

DRAFT

WARNING

Remove rings, bracelets, wristwatches, neck chains, and any other jewelry before working around

vehicle.

Jewelry can catch on equipment and cause serious injury.

Jewelry or tools may short

across electrical circuits or terminals and cause damage to equipment or severe burns or

electrical shock to personnel.

HEMAC158

AUDIBLE TEST

NOTE:

Do not start engine during this procedure.

AC

condenser motor solenoid operation will be checked by

listening for a clicking sound from the AC condenser

motor solenoid when the engine start switch is turned to

ON position.

(1) Remove four screws, lockwashers, washers, and

cover from AC condenser assembly (WP 0027).

(2) Turn fan control switch to an on position (low,

medium, or high) (WP 0004).

(3) Turn temperature control switch to the coldest

position (fully clockwise) (WP 0004).

(4) While assistant turns engine start switch ON

(TM 9-2320-279-10), check operation of AC

condenser motor solenoid by listening for a click

when engine start switch is turned ON.

(a) If AC condenser motor solenoid is not

energized, turn engine start switch OFF and go

to Step 21 of this fault.

(b) If AC condenser motor solenoid is energized,

go to Step 16 of this fault.