DRAFT
TB 9-2320-364-13&P-1
AC DOES NOT COOL OR COOLS INADEQUATELY - Continued
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.
Wear protective goggles and nonleather gloves when servicing air conditioner system. Failure to
comply may result in injury to personnel.
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VISUAL INSPECTION
(1)
Shut off engine (TM 9-2320-364-10).
(2)
Remove eight screws and heater compartment
access panel (TM 9-2320-364-20).
(3)
Remove two upper plenums (TM 9-2320-364-20).
(4)
Remove four screws, lockwashers, washers, and
cover from AC heater/evaporator assembly
CAUTION: Slide temperature probe slowly from
evaporator core. Failure to comply may result in
damage to equipment.
(5)
Remove temperature control switch temperature
probe from evaporator core (WP 0044).
(6)
Remove four screws and pull heater compartment
front panel aside (WP 0037).
(7)
Remove four screws and evaporator core cover
from AC heater/evaporator assembly (WP 0030).
(8)
Inspect AC expansion valve for excessive
sweating and frost.
(a) If AC expansion valve is not free from
excessive sweating and frost:
1. Recover R-134a refrigerant (WP 0053).
2. Replace AC expansion valve (WP 0030).
(b) If AC expansion valve is free from excessive
sweating and frost:
1. Recover R-134a refrigerant (WP 0053).
2. Replace AC evaporator core (WP 0030).
(9)
If removed, install evaporator core cover and four
screws on AC heater/evaporator assembly
(10) If removed, install heater compartment front panel
and four screws (WP 0037).
(11) If removed, install cover and four washers,
lockwashers, and screws on AC heater/evaporator
assembly (WP 0030).
(12) Install two upper plenums (TM 9-2320-364-20).
CAUTION: Do not puncture temperature probe. Failure
to comply will cause gas to leak out.
NOTE: Slide temperature probe in evaporator core
slowly. Temperature probe must slide into AC
evaporator core until it touches the bottom of insertion
hole.
(13) Install temperature control switch temperature
probe in AC evaporator core (WP 0044).
(14) Replace AC condenser dryer (WP 0024).
(15) Evacuate and charge system (WP 0053).
PLSAC217
(16) Verify repair, go to Step 22 of this fault.
