Infiniti G37 Coupe. Manual - part 750

HA-46

< ON-VEHICLE REPAIR >

LOW-PRESSURE PIPE 1 AND HIGH-PRESSURE PIPE 2

LOW-PRESSURE PIPE 1 AND HIGH-PRESSURE PIPE 2

Exploded View

INFOID:0000000001713750

Refer to 

HA-13, "Refrigerant Connection"

.

Removal and Installation

INFOID:0000000001675644

REMOVAL

1.

Set the temperature at 18

°

C (60

°

F). Then disconnect the battery cable from the negative terminal.

2.

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

3.

Remove cowl top cover. Refer to 

EXT-21, "Exploded View"

.

1.

Blower unit

2.

O-ring

3.

Low-pressure pipe 2

4.

Low-pressure flexible hose

5.

Compressor

6.

Radiator & condenser assembly

7.

High-pressure flexible hose

8.

High-pressure pipe 1

9.

Heater & cooling unit assembly

10. Expansion valve

11.

Evaporator

12. High-pressure pipe 2

13. Low-pressure pipe 1

Refer to 

GI-4, "Components"

 for symbols in the figure.

JSIIA0109GB

LOW-PRESSURE PIPE 1 AND HIGH-PRESSURE PIPE 2

HA-47

< ON-VEHICLE REPAIR >

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4.

Disconnect one-touch joint between low-pressure pipe 1 (1) and
low-pressure pipe 2 (2) with disconnector (A) (SST:
9253089916).

CAUTION:

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

5.

Disconnect one-touch joints between high-pressure pipe 1 (3)
and high-pressure pipe 2 (4) with disconnector (SST:
9253089908).

CAUTION:

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

6.

Remove foot grille (right). Refer to 

EXT-19, "Exploded View"

.

7.

Remove blower unit. Refer to 

VTL-30, "Exploded View"

.

8.

Remove air mix door motor (passenger side). Refer to 

VTL-40, "Exploded View"

.

9.

Remove mode door motor. Refer to 

VTL-38, "Exploded View"

.

10. Remove main link (right) and max. cool door link (right). Refer to 

VTL-34, "Exploded View"

.

11. Remove mounting screws (A), and then remove evaporator

cover (1).

12. Remove mounting bolt (A), and then remove low-pressure pipe

1 (1) and high-pressure pipe 2 (2).

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.

INSTALLATION

Installation is basically the reverse order of removal.

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping

straight in axial direction.

• Insert piping securely until a click is heard.
• After piping connection is completed, pull male-side piping by hand to make sure that connection

does not come loose.

• Check for leakages when recharging refrigerant.

JSIIA0037ZZ

JSIIA0093ZZ

JSIIA0029ZZ

HA-48

< ON-VEHICLE REPAIR >

CONDENSER

CONDENSER

Exploded View

INFOID:0000000001675645

Removal and Installation

INFOID:0000000001675646

REMOVAL

1.

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

2.

Remove radiator & condenser assembly. Refer to 

CO-14, "Exploded View"

.

CAUTION:

Be careful not to damage core surface of radiator & condenser assembly/

INSTALLATION

Installation is basically the reverse order of removal.

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping

straight in axial direction.

• Insert piping securely until a click is heard.
• After piping connection is completed, pull male-side piping by hand to make sure that connection

does not come loose.

• Check for leakages when recharging refrigerant.

1.

Refrigerant pressure sensor

2.

O-ring

3.

Liquid tank bracket

4.

Liquid tank

5.

Bracket

6.

Condenser pipe assembly

7.

Radiator & condenser assembly

Refer to 

GI-4, "Components"

 for symbols in the figure.

JSIIA0012GB

CONDENSER PIPE ASSEMBLY

HA-49

< ON-VEHICLE REPAIR >

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CONDENSER PIPE ASSEMBLY

Exploded View

INFOID:0000000001713753

Removal and Installation

INFOID:0000000001675648

REMOVAL

1.

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

2.

Remove front bumper. 

EXT-12, "Exploded View"

.

3.

Remove air cleaner case (LH) and air duct (LH). Refer to 

EM-26, "Exploded View"

.

4.

Disconnect one-touch joint between high-pressure flexible hose
(1) and condenser pipe assembly (2) with disconnector (A)
(SST: 9253089912).

CAUTION:

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

5.

Disconnect one-touch joints between high-pressure pipe 1 (3)
and condenser pipe assembly with disconnector (A) (SST:
9253089908).

CAUTION:

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

1.

Refrigerant pressure sensor

2.

O-ring

3.

Liquid tank bracket

4.

Liquid tank

5.

Bracket

6.

Condenser pipe assembly

7.

Radiator & condenser assembly

Refer to 

GI-4, "Components"

 for symbols in the figure.

JSIIA0012GB

JSIIA0095ZZ