Infiniti QX56 (Z62). Manual - part 776

 

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Infiniti QX56 (Z62). Manual - part 776

 

 

A/C UNIT ASSEMBLY

HA-45

< REMOVAL AND INSTALLATION >

C

D

E

F

G

H

J

K

L

M

A

B

HA

N

O

P

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"

.

HA-46

< REMOVAL AND INSTALLATION >

REAR A/C UNIT

REAR A/C UNIT

Exploded View

INFOID:0000000006276187

REMOVAL

DISASSEMBLY

1.

Roof duct RH

2.

Rear ventilator outlet grille A RH

3.

Rear ventilator base RH

4.

Rear ventilator garnish A RH

5.

Rear ventilator outlet grille B RH

6.

Rear ventilator grille RH

7.

Rear ventilator garnish B RH

8.

Rear A/C unit assembly

9.

Rear ventilator duct lower

10. Luggage side finisher RH

11. Rear ventilator garnish A LH

12. Rear ventilator base LH

13. Rear ventilator outlet grille A LH

14. Rear ventilator garnish B LH

15. Rear ventilator grille LH

16. Rear ventilator outlet grille B LH

17. Roof duct LH

Roof duct center

19. Rear ventilator duct upper

JMIIA0643ZZ

REAR A/C UNIT

HA-47

< 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:0000000006276188

REMOVAL

1.

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

HA-22, "Per-

form Lubricant Return Operation"

.

2.

Drain engine coolant from cooling system. Refer to 

HA-22, "Perform Lubricant Return Operation"

.

3.

Remove rear ventilator duct upper. Refer to 

VTL-12, "REAR VENTILATOR DUCT UPPER : Removal and

Installation"

.

4.

Remove rear ventilator duct lower. Refer to 

VTL-12, "REAR VENTILATOR DUCT LOWER : Removal and

Installation"

.

5.

Remove mounting bolt, and then disconnect rear cooler unit pipe assembly from rear cooler pipe assem-
bly.

1.

Rear blower harness

2.

Rear blower motor

3.

Rear A/C unit case RH

4.

Rear evaporator pipe assembly

5.

O-ring

6.

Rear expantion valve assembly

7.

Rear A/C cooler pipe assembly

8.

Pipe bracket

9.

Grommet

10. Rear cooler pipe

11.

Rear heater outlet tube assembly

12. Blind cap

13. Rear heater inlet tube assembly

14. Clamp

15. Clamp

16. Shild plate

17. Bracket

18. Rear A/C unit case LH

19. Rear evapolator

20. Drain hose

21. Rear air mix door

22. Rear heater core

23. Rear heater pipe clamp

24. Rear A/C unit upper case (front)

25. Rear mode door

26. Rear A/C unit upper case (rear)

27. Air mix door harness

28. Rear intake sensor

29. Packing

Refer to 

GI-4, "Components"

 for symbols in the figure.

JMIIA0641GB

HA-48

< REMOVAL AND INSTALLATION >

REAR A/C UNIT

CAUTION:

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

6.

Remove clamps, and then disconnect rear heater pipe from rear cooler pipe assembly.

7.

Remove jack from the vehicle.

8.

Remove mounting bolts and nuts, and then remove rear A/C unit assembly.

INSTALLATION

Note the following items, and 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"

.

EVAPORATOR

EVAPORATOR : Removal and Installation

INFOID:0000000006276189

REMOVAL

1.

Remove rear A/C unit assembly. Refer to 

HA-47, "REAR A/C UNIT ASSEMBLY : Removal and Installa-

tion"

.

2.

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

3.

Remove mounting bolt, and then remove rear evaporator from rear evaporator assembly.

INSTALLATION

Note the following items, and 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"

.

EVAPORATOR PIPE ASSEMBLY

EVAPORATOR PIPE ASSEMBLY : Removal and Installation

INFOID:0000000006276190

REMOVAL

1.

Remove rear evaporator assembly. Refer to 

HA-48, "EVAPORATOR : Removal and Installation"

.

2.

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

CAUTION:

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

3.

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

INSTALLATION

Note the following items, and 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:0000000006276191

REMOVAL

1.

Remove rear A/C unit assembly. Refer to 

HA-47, "REAR A/C UNIT ASSEMBLY : Removal and Installa-

tion"

2.

Remove grommet from pipe bracket.

3.

Remove mounting screws and then remove pipe bracket.

4.

Remove mounting screw, and then heater pipe clamp.

 

 

 

 

 

 

 

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