Nissan Quest E52. Instruction — part 717

REAR A/C UNIT

HA-59

< REMOVAL AND INSTALLATION >

Remove mounting bolts, and then remove evaporator pipe assembly and expansion valve from evapora-
tor assembly as a set. Refer to

HA-56, "Exploded View"

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure after installing new evaporator. Refer to

HA-22, "Lubricant

Adjusting Procedure for Components Replacement Except Compressor"

• Check for leakages when recharging refrigerant. Refer to

HA-18, "Leak Test"

EVAPORATOR PIPE ASSEMBLY

EVAPORATOR PIPE ASSEMBLY : Removal and Installation

INFOID:0000000009651601

CAUTION:

Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to

HA-

22, "Perform Lubricant Return Operation"

REMOVAL

Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to

HA-20, "Recy-

cle Refrigerant"

Remove rear A/C unit assembly. Refer to

HA-57, "REAR A/C UNIT ASSEMBLY : Removal and Installa-

tion"

Remove mounting bolt, and then disconnect rear cooler pipe assembly from expansion valve.

CAUTION:

Cap or wrap the joint of the rear A/C piping and expansion valve with suitable material such as
vinyl tape to avoid the entry of air.

Remove mounting bolts, and then remove expansion valve from evaporator pipe assembly.

CAUTION:

Cap or wrap the joint of the expansion valve and evaporator pipe assembly with suitable material
such as vinyl tape to avoid the entry of air.

Disassemble rear A/C unit assembly, and then remove evaporator assembly.

Remove mounting bolts, and then remove evaporator pipe assembly from evaporator assembly.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to

HA-18, "Leak Test"

HEATER CORE

HEATER CORE : Removal and Installation

INFOID:0000000009651602

CAUTION:

Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to

HA-

22, "Perform Lubricant Return Operation"

REMOVAL

Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to

HA-20, "Recy-

cle Refrigerant"

Remove rear A/C unit assembly. Refer to

HA-57, "REAR A/C UNIT ASSEMBLY : Removal and Installa-

tion"

Remove fixing screws, and then remove rear foot duct 2 from rear A/C unit assembly.

Remove heater core from rear A/C unit assembly.

INSTALLATION

Note the following item, and then install in the reverse order of removal.
NOTE:

HA-60

< REMOVAL AND INSTALLATION >

REAR A/C UNIT

Refer to

CO-9, "Refilling"

when filling radiator with engine coolant.

EXPANSION VALVE

EXPANSION VALVE : Removal and Installation

INFOID:0000000009651603

CAUTION:

Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to

HA-

22, "Perform Lubricant Return Operation"

REMOVAL

Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to

HA-20, "Recy-

cle Refrigerant"

Remove rear A/C unit assembly. Refer to

HA-57, "REAR A/C UNIT ASSEMBLY : Removal and Installa-

tion"

Remove mounting bolt, and then disconnect rear cooler pipe assembly from expansion valve.

CAUTION:

Cap or wrap the joint of the rear A/C piping and expansion valve with suitable material such as
vinyl tape to avoid the entry of air.