Nissan Quest E52. Manual - part 716

A/C UNIT ASSEMBLY

HA-55

< REMOVAL AND INSTALLATION >

C

D

E

F

G

H

J

K

L

M

A

B

HA

N

O

P

9.

Pull out heater core (2) toward heater & cooling unit assembly
(1) to remove.

INSTALLATION

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

CO-9, "Refilling"

 when filling radiator with engine coolant.

EXPANSION VALVE

EXPANSION VALVE : Removal and Installation

INFOID:0000000009651597

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

1.

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

HA-20, "Recy-

cle Refrigerant"

.

2.

Disconnect front cooler pipe assembly from expansion valve. Refer to 

HA-37, "COOLER PIPE ASSEM-

BLY : Removal and Installation"

.

3.

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

HA-47,

"Exploded View"

.

CAUTION:

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

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"

.

JMIIA1838ZZ

HA-56

< REMOVAL AND INSTALLATION >

REAR A/C UNIT

REAR A/C UNIT

Exploded View

INFOID:0000000009651598

REMOVAL

DISASSEMBLY

1.

Rear ventilator grille 1 LH

2.

Rear upper ventilator duct 1

3.

Rear ventilator grille 2 LH

4.

Rear foot duct 1

5.

Rear A/C unit assembly

6.

Rear ventilator pillar duct

7.

Rear upper ventilator duct 3

8.

Rear upper ventilator duct 2

9.

Rear ventilator grille 2 RH

10. Rear ventilator grille 1 LH

: Clip

JMIIA1799ZZ

REAR A/C UNIT

HA-57

< REMOVAL AND INSTALLATION >

C

D

E

F

G

H

J

K

L

M

A

B

HA

N

O

P

REAR A/C UNIT ASSEMBLY

REAR A/C UNIT ASSEMBLY : Removal and Installation

INFOID:0000000009651599

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

1.

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

HA-20, "Recy-

cle Refrigerant"

.

2.

Drain engine coolant from cooling system. Refer to 

CO-8, "Draining"

.

3.

Remove rear bumper closing. Refer to 

EXT-17, "REAR BUMPER CLOSING : Removal and Installation"

.

1.

Foot packing

2.

Rear foot duct 2

3.

Intake sensor

4.

Rear heater core

5.

Clamp

6.

Blind cap

7.

Sub harness

8.

Rear A/C unit case LH

9.

Drain flange packing

10. Drain flange

11.

Drain flange adapter

12. Drain packing

13. Rear A/C unit case packing

14. Rear A/C unit case RH

15. Sub harness

16. Rear blower motor

17. Insulator 1

18. Insulator 3

19. Evaporator

20. Insulator 2

21. O-ring

22. Rear A/C unit packing

23. Rear A/C unit pipe assembly

24. Rear air mix door

25. Rear mode door

26. Rear A/C unit grommet

27. Expansion valve

28. Evaporator pipe assembly

29. Rear ventilator packing

30. Rear A/C unit bracket

: Always replace after every disassembly.

: N·m (kg-m, in-lb)

JMIIA1841GB

HA-58

< REMOVAL AND INSTALLATION >

REAR A/C UNIT

4.

Remove mounting bolt (A) and fixing clamps (B).

5.

Disconnect rear cooler pipe assembly 2 from expansion valve.

CAUTION:

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

6.

Remove luggage side lower finisher RH. Refer to 

INT-43, "LUGGAGE SIDE LOWER FINISHER :

Removal and Installation"

.

7.

Remove back pillar garnish RH. Refer to 

INT-27, "BACK PILLAR GARNISH : Removal and Installation"

.

8.

Remove rear ventilator pillar duct. Refer to 

VTL-14, "REAR VENTILATOR DUCT : Removal and Installa-

tion"

.

9.

Remove seat belt shoulder bracket RH. Refer to 

SB-15, "Exploded View"

.

10. Disconnect harness connectors (A), and then remove harness

fixing clip (B).

11. Remove mounting bolts, and then remove rear A/C unit assembly from the vehicle. 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.
• Check for leakages when recharging refrigerant. Refer to 

HA-18, "Leak Test"

.

NOTE:
Refer to 

CO-9, "Refilling"

 when filling radiator with engine coolant.

EVAPORATOR

EVAPORATOR : Removal and Installation

INFOID:0000000009651600

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

1.

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

HA-20, "Recy-

cle Refrigerant"

.

2.

Remove rear A/C unit assembly. Refer to 

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

tion"

.

3.

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.

4.

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

JMIIA1197ZZ

JMIIA1149ZZ