Nissan Xterra. Instruction — part 707
HEATER & COOLING UNIT ASSEMBLY
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1. Discharge the refrigerant from the A/C system. Refer to
XX-XX, "*****"
.
2. Drain the coolant from the engine cooling system. Refer to
CO-11, "Changing Engine Coolant"
.
3. Disconnect the battery negative and positive terminals. Refer to
CAUTION:
Before servicing, turn the ignition switch off, disconnect both battery terminals and wait at least
three minutes.
4. Remove the heater core pipes RH nut.
5. Disconnect the heater core hoses from the heater core.
6. Disconnect the high and low-pressure A/C pipes from the front
expansion valve.
7. Remove the instrument panel assembly. Refer to
8. Remove the center console assembly. Refer to
9. Remove the two front floor ducts. Refer to
.
10. Remove the steering column. Refer to
.
11. Disconnect the instrument panel wire harness at the RH and LH in-line connector brackets, and the fuse
block (SMJ) harness connectors.
12. Remove the covers then remove the three steering member bolts from each side to disconnect the steer-
ing member from the vehicle body.
13. Remove the heater and cooling unit assembly attached to the steering member from the vehicle.
CAUTION:
Use care not to damage the seats and interior trim panels when removing the heater and cooling
unit assembly with it attached to the steering member.
14. Remove the front heater and cooling unit assembly from the steering member.
Installation
Installation is in the reverse order of removal.
• Fill the engine cooling system with the specified coolant mixture. Refer to
.
• Recharge the A/C system. Refer to
XX-XX, "*****"
.
• After installation, perform steering (angle) sensor adjustment. Refer to
STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement"
(TYPE1) or
"ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement"
(TYPE 2).
CAUTION:
• Do not reuse O-rings.
• Apply A/C oil to the O-ring of the low-pressure A/C pipe and high-pressure A/C pipe for installation.
Refer to
• After charging the refrigerant, check for leaks. Refer to
HA-20, "Checking of Refrigerant Leaks"
LJIA0165E
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EVAPORATOR
EVAPORATOR
Removal and Installation
INFOID:0000000009484337
Heater and Cooling Unit Assembly
AWIIA1533ZZ
1.
Center ventilator connector duct
2.
Heater core cover
3. Intake air case
4.
Heater core and evaporator pipes bracket 5.
Heater core and evaporator pipes
grommet
6. Heater core
7.
Upper heater and cooling unit case
8.
Evaporator and expansion valve
assembly
9. Lower heater and cooling unit case
10. Variable blower control/Blower motor re-
sistor
11. Blower motor
EVAPORATOR
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REMOVAL
1. Remove the heater core. Refer to
VTL-17, "Removal and Installation"
.
2. Separate the heater and cooling unit case.
3. Remove the evaporator and expansion valve assembly.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse O-rings.
• Apply A/C oil to the O-rings on the A/C low-pressure flexible A/C hose and the high-pressure A/C
pipe for installation.
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EXPANSION VALVE
EXPANSION VALVE
Removal and Installation
INFOID:0000000009484338
REMOVAL AND INSTALLATION
For removal and installation of the expansion valve, refer to
HA-37, "Removal and Installation"
.
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