(6) Remove the ta pe or plugs from th e condenser
inlet port an d t he discharge line fitting.
(7) Lubricate a new rubber O-rin g seal with clean
refriger ant oil an d in st all it on the discharge lin e fit-
ting.
(8) Connect the dischar ge line fitt ing to the con-
denser in let port.
(9) In st all t he nut that secu res the discharge line
fitting to th e conden ser. T igh ten the nu t to 33 N·m
(24 ft. lbs.).
(10) Install t he gr ille (Refer to 23 - BODY/EXTE-
RIOR/GRILLE - INSTALLATION).
(11) Eva cuate the refr igeran t system . (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGE RANT SYS-
TEM EVACUATE)
(12) Charge the refr igerant system. (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGE RANT SYS-
TEM CH ARGE)
(13) Reconn ect the n egative battery cable.
A/CEVAPORAT OR
DESCRIPTION
The A/C evapora tor for the heating-A/C system is
locat ed within th e HVAC housin g, behind th e instru-
ment pan el (Fig. 8). The A/C evaporator is posit ioned
with in the HVAC housing so that a ll air entering the
housin g m ust pass over th e evapora tor fins before it
is distributed thr ough the heating-A/C syst em duct s
and outlets. However, air pa ssing over th e evaporator
fins will only be conditioned when t he A/C compres-
sor is en gaged a nd circulating refrigera nt t hrough
the A/C evaporator.
The A/C evaporator tubes are con nected a nd sealed
to the A/C expan sion valve by use of rubber O-rin gs
and a ta pping block.
The A/C evapora tor is ser viced by r emoving an d
disassemblin g th e HVAC housing.
OPERATION
Refrigerant ent ers the evapora tor from the expan-
sion valve a s a low-tem perature, low-pressure liqu id.
As air flows over the fins of th e evapora tor, the
humidity in t he a ir condenses on the fins, and the
heat from the air is a bsor bed by the refr iger ant . Heat
absorption causes the refrigera nt to boil an d vapor-
ize. The r efrigera nt becomes a l ow-pressure gas
before it lea ves th e eva por ator.
The evaporator cannot be r epair ed an d, if fau lty or
da maged, it must be replaced.
REMOVAL
WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, impact sensor, or instrument panel com-
ponent diagnosis or service. Disconnect and isolate
the battery negative (ground) cable, then wait two
minutes for the system capacitor to discharge
before performing further diagnosis or service. This
is the only sure way to disable the supplemental
restraint system. Failure to take the proper precau-
tions could result in accidental airbag deployment.
Fig. 8 Front A/C Evaporator
1 - A/C EVAPORATOR
2 - EVAPORATOR TUBES
3 - TAPPING BLOCK
24 - 72 PLUMBING VA
To Next Page
Loading...
