Nissan Leaf. Instruction — part 734
HA-58
< REMOVAL AND INSTALLATION >
[WITH HEAT PUMP SYSTEM]
HEATING AND COOLING UNIT ASSEMBLY
DANGER:
Touching high voltage components without using the appropriate protective equipment will
cause electrocution.
CAUTION:
For voltage measurements, use a tester which can measure to 500 V or higher.
2. Use the refrigerant recovery equipment (for HFC134a) and recover the refrigerant. Refer to
3. Remove cowl top extension. Refer to
EXT-19, "Removal and Installation"
4. Remove bolt (A), and then disconnect low-pressure pipe (1) and high-pressure pipe (2) from evaporator.
CAUTION:
To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports
of the pipes and evaporator from the atmosphere.
5. Remove bolt (A) then disconnect high pressure pipes (1) and (2) from inner condenser.
6. Remove instrument panel assembly. Refer to
IP-17, "Removal and Installation"
.
7. Remove side ventilator duct. Refer to
8. Disconnect drain hose (1).
Standard
: 5 V or less
JMIIA2659ZZ
JMIIA2658ZZ
AWIIA1734ZZ
HEATING AND COOLING UNIT ASSEMBLY
HA-59
< REMOVAL AND INSTALLATION >
[WITH HEAT PUMP SYSTEM]
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9. Remove nuts (A), and then remove instrument stay (1).
10. Remove screws (A), and then remove fuse block (J/B) (1).
11. Remove bolts (A) of ground wires from steering member.
12. Remove all harness connectors and mounting nuts necessary to allow steering column assembly to be
moved. Refer to
ST-35, "Removal and Installation"
.
13. Move steering column assembly to secure work space.
14. Remove all harness connectors and clips necessary to allow steering member to be removed. Move main
harness aside and secure work space so that steering member can be easily removed.
AWIIA1665ZZ
JPIIA1789ZZ
JPIIA1790ZZ
HA-60
< REMOVAL AND INSTALLATION >
[WITH HEAT PUMP SYSTEM]
HEATING AND COOLING UNIT ASSEMBLY
15. Remove bolts (A) and (B), and then remove steering member (1) from the vehicle.
CAUTION:
When removing steering member, 2 workers are required to prevent it from dropping.
16. Remove heating and cooling unit assembly from the vehicle.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• To prevent degradation in insulation performance, use special electric compressor oil as the com-
pressor oil.
• In order to prevent conventional PAG oil from becoming mixed in, never reuse recovered compres-
sor oil and instead always use new oil. The use of oil including the conventional PAG oil may
degrade the performance of insulation.
• To prevent performance degradation, never use a fluorescent agent in order to detect refrigerant
leakage. Also be careful that a fluorescent agent never enter the oil.
• To prevent leakage of refrigerant, replace the O-ring with a new one. Apply a coat of compressor oil
to the O-ring prior to installation.
• Perform a check for refrigerant leakage when charging with refrigerant. Refer to
.
EVAPORATOR
EVAPORATOR : Removal and Installation
INFOID:0000000010122129
REMOVAL
1. Remove heating and cooling unit assembly. Refer to
HA-57, "HEATING AND COOLING UNIT ASSEM-
BLY : Removal and Installation"
2. Disassemble the heating and cooling unit assembly, and then remove evaporator assembly.
3. Remove intake sensor from evaporator assembly.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• To prevent leakage of refrigerant, replace the O-ring with a new one. Apply a coat of compressor oil
to the O-ring prior to installation.
JPIIA1791ZZ
HEATING AND COOLING UNIT ASSEMBLY
HA-61
< REMOVAL AND INSTALLATION >
[WITH HEAT PUMP SYSTEM]
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• When installing the new evaporator, be sure to install the intake sensor in the same position as
before it was removed.
• When removing or installing the intake sensor, be sure not to rotate the bracket insertion part. Fail-
ure to do this may cause damage to the evaporator.
• After installing a new evaporator, adjust the compressor oil level. Refer to
ing Procedure for Components Replacement Except Compressor"
INNER CONDENSER
INNER CONDENSER : Removal and Installation
INFOID:0000000010122130
REMOVAL
1. Remove heating and cooling unit assembly. Refer to
HA-57, "HEATING AND COOLING UNIT ASSEM-
BLY : Removal and Installation"
2. Remove screws (A) and (B), then remove PTC heater shield LH.
3. Remove screws (A), then remove inner condenser pipe cover.
4. Remove inner condenser cover screws (A), then remove inner
condenser from heating and cooling unit assembly.
INSTALLATION
Install in the reverse order of removal.
JMIIA2682ZZ
JMIIA2683ZZ
JMIIA2684ZZ
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