HEATER-A/C HOUSING
The heater-A/C housing assembly must be removed
from the vehicle and the two halves of the housing
separated for service access of the heater core, evaporator
coil, blend-air door, and each of the various
mode control doors.
Fig. 50 Defrost, Floor, and Panel/Demist Door
Vacuum Actuators
Fig. 51 Vacuum Actuator Remove/Install - Typical
ACTUATOR LATCH TRIM SATCICTKUATOR MOUNT LHATOCLHE
XJ HEATING AND AIR CONDITIONING 24 - 39
REMOVAL AND INSTALLATION (Continued)
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS,
REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG
DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the instrument panel assembly as
described in Group 8E - Instrument Panel Systems.
(3) Unplug the heater-A/C unit wire harness connector,
which is fastened to the heater-A/C housing
next to the blower motor relay (Fig. 53).
(4) If the vehicle is not equipped with air conditioning,
go to Step 6. If the vehicle is equipped with
air conditioning, recover the refrigerant from the
refrigerant system as described in this group.
(5) Disconnect the refrigerant lines from the evaporator
tubes. Install plugs in, or tape over all of the
open refrigerant fittings.
(6) Drain the cooling system. Refer to Group 7 -
Cooling System for the procedures.
(7) Disconnect the heater hoses from the heater
core tubes.
(8) Unplug the heater-A/C system vacuum supply
line from the tee fitting near the heater core tubes.
(9) If the vehicle is equipped with air conditioning,
remove and relocate the accumulator and its mounting
bracket.(10) Remove the five heater-A/C housing mounting
nuts from the studs on the engine compartment side
of the dash panel (Fig. 54). Remove or reposition the
evaporation canister for access, if required.
(11) Pull the heater-A/C housing rearward far
enough for the mounting studs and the evaporator
drain tube to clear the dash panel holes.
(12) Remove the heater-A/C housing from the vehicle.