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.


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