Jeep Cherokee 2000 Service Manual - page 1898
(3) If the vehicle is not equipped with air condi-
tioning, go to Step 6. If the vehicle is equipped with
air conditioning, recover the refrigerant from the
refrigerant system. See Refrigerant Recovery in this
group for the procedures.
(4) Disconnect the liquid line refrigerant line fit-
ting from the evaporator inlet tube. See Refrigerant
Line Coupler in this group for the procedures. Install
plugs in, or tape over all of the opened refrigerant
line fittings.
(5) Disconnect the accumulator inlet tube refriger-
ant line fitting from the evaporator outlet tube. See
Refrigerant Line Coupler in this group for the proce-
dures. Install plugs in, or tape over all of the opened
refrigerant line fittings.
(6) Drain the engine cooling system. Refer to
Group 7 - Cooling System for the procedures.
(7) Disconnect the heater hoses from the heater
core tubes. Refer to Group 7 - Cooling System for the
procedures. Install plugs in, or tape over the opened
heater core tubes.
(8) Unplug the heater-A/C system vacuum supply
line connector from the tee fitting near the heater
core tubes.
(9) Unplug the heater-A/C unit wire harness con-
nector, which is fastened to the heater-A/C housing
next to the blower motor relay (Fig. 39).
(10) Remove the five nuts from the heater-A/C
housing mounting studs on the engine compartment
side of the dash panel (Fig. 40). Remove or reposition
the evaporation canister for additional access, if
required.
(11) Pull the heater-A/C housing rearward far
enough for the mounting studs and the evaporator
condensate drain tube to clear the dash panel holes.
(12) Remove the heater-A/C housing from the vehi-
cle.
DISASSEMBLY
(1) Remove the heater-A/C housing from the vehi-
cle and place it on a work bench.
(2) Unplug the vacuum harness connectors from
the floor door actuator and, if the unit is so equipped,
the recirculation air door actuator.
(3) Disengage the vacuum harness from any rout-
ing clips located on the lower half of the heater-A/C
housing.
(4) Disengage the heater-A/C wire harness connec-
tor and the blower motor relay wire harness connec-
tor push-in retainers from their mounting holes on
the heater-A/C housing.
(5) Remove the blower motor and blower wheel
unit from the heater-A/C housing. See Blower Motor
in this group for the procedures.
(6) Carefully remove the foam seal from the flange
around the blower motor opening in the heater-A/C
housing. If the seal is deformed or damaged, it must
be replaced.
(7) Pull the vacuum supply line and connector
through the foam seal on the heater core and evapo-
rator coil tube mounting flange of the heater-A/C
housing (Fig. 41).
(8) If the unit is equipped with air conditioning,
remove the screw that secures the clamp to the evap-
orator coil tubes and remove the clamp.
Fig. 39 Heater-A/C Unit Connector
1 – BLOWER MOTOR RELAY
2 – VACUUM HARNESS
3 – HEATER-A/C WIRE HARNESS CONNECTOR
4 – HEATER-A/C HOUSING
Fig. 40 Heater-A/C Housing Remove/Install
1 – HEATER-A/C HOUSING
2 – STUD
3 – NUT
4 – STUD
5 – RIGHT FRONT FENDER
XJ
HEATING AND AIR CONDITIONING
24 - 37
REMOVAL AND INSTALLATION (Continued)