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24 - 36
DISTRIBUTION - FRONT
HVAC HOUSING (Continued)
DISASSEMBLY
(1) Remove the heater and ventilation housings
from the vehicle (Refer to 24 - HEATING & AIR
CONDITIONING/DISTRIBUTION/HVAC HOUSING
- REMOVAL).
(2) Place the heater housing in the upright posi-
tion on a work bench, making allowance for leakage
of fluids.
(3) Remove the gasket located at the evaporator
and heater core tubes and the gasket that seals the
ventilation housing to the heater housing (Fig. 9).
(4) Remove the 12 screws that secure the two
housing halves together.
(5) Remove the heater housing cover from the
heater housing.
(6) Remove the heater core from the heater hous-
ing.
(7) Remove the wire harness.
(8) Remove the three heater core tube retaining
bolts and the heater core tube assembly from the
heater core.
(9) Remove the heater core tube seals and discard.
(10) Install plug in, or tape over the opened heater
core fittings.
(11) Remove the evaporator core from the heater
housing.
ASSEMBLY
(1) Install the evaporator core into the heater
housing.
(2) Remove the tape or plugs from the heater core
fittings.
(3) Lubricate two new rubber o-ring seals with
clean engine coolant and install them onto the heater
core fitting.
(4) Connect the heater core tube assembly to the
heater core and install the three retaining bolts.
Tighten the bolts to 5 N·m (45 in. lbs.).
(5) Install the wire harness.
(6) Install the heater core into the heater housing.
(7) Install the heater housing cover onto the
heater housing.
(8) Install the 12 screws that secure the two hous-
ing halves together. Tighten the screws to 2 N·m (17
in. lbs.).
(9) Install the gasket for the evaporator and
heater core tube outlets and the gasket that seals the
ventilation housing to the heater housing.
(10) Install the heater and ventilation housings
(Refer to 24 - HEATING & AIR CONDITIONING/
DISTRIBUTION/HVAC
TION).
HOUSING
-
INSTALLA-
Fig. 9 Heater Housing
1 - SCREW (12)
2 - HEATER HOUSING COVER
3 - EVAPORATOR
4 - EVAPORATOR O-RING SEAL (2)
4 - EVAPORATOR GASKET
6 - VENTILATION HOUSING GASKET
7 - HEATER HOUSING
8 - WIRING HARNESS
9 - BOLT (3)
10 - HEATER CORE
11 - HEATER CORE TUBE ASSEMBLY
12 - HEATER CORE TUBE GASKET
13 - HEATER CORE TUBE O-RING SEAL (2)
INSTALLATION
WARNING: REVIEW THE WARNINGS AND CAU-
TIONS IN PLUMBING BEFORE PERFORMING THE
FOLLOWING OPERATION. (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING - WARNING) (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMBING -
CAUTION)
NOTE: High pressures are produced in the refriger-
ant system when the air conditioning compressor is
operating. Extreme care must be exercised to make
sure that each of the refrigerant system connec-
tions is pressure-tight and leak free.
(1) Position the heater housing to the dash panel.
Be certain that the evaporator condensate drain tube
is positioned correctly.
(2) Install the heater housing retaining screws.
Tighten the screws to 4.5 N·m (40 in. lbs.).
(3) Connect the heater housing wire harness con-
nectors and install the wiring harness to the bracket.
VA
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