Nissan Qashqai J11. Manual - part 1087

HA-174

< REMOVAL AND INSTALLATION >

[TYPE 4]

COOLER PIPE AND HOSE

R9M engine models

HIGH-PRESSURE FLEXIBLE HOSE

HIGH-PRESSURE FLEXIBLE HOSE : Removal and Installation

INFOID:0000000010707894

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-

67, "Perform Lubricant Return Operation"

.

REMOVAL

1.

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

HA-65, "Recy-

cle Refrigerant"

.

2.

Remove mounting bolt, and then disconnect high-pressure flexible hose from the high-pressure pipe 2.

JMIIA3632GB

1.

A/C unit assembly

2.

O-ring

3.

High-pressure pipe 3

4.

High-pressure pipe 1

5.

Refrigerant pressure sensor

6.

Condenser & liquid tank assembly

7.

High-pressure pipe 2

8.

High-pressure flexible hose

9.

Compressor

10. Low-pressure flexible hose

11.

Low-pressure pipe

: Always replace after every disassembly.

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

COOLER PIPE AND HOSE

HA-175

< REMOVAL AND INSTALLATION >

[TYPE 4]

C

D

E

F

G

H

J

K

L

M

A

B

HA

N

O

P

CAUTION:

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

3.

Remove mounting bolt, and then disconnect high-pressure flexible hose from the compressor.

CAUTION:

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

4.

Remove high-pressure flexible hose from the vehicle.

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-64, "Leak Test"

.

LOW-PRESSURE FLEXIBLE HOSE

LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation

INFOID:0000000010707895

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-

67, "Perform Lubricant Return Operation"

.

REMOVAL

1.

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

HA-65, "Recy-

cle Refrigerant"

.

2.

Remove mounting bolt, and then disconnect low-pressure flexible hose from low-pressure pipe.

CAUTION:

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

3.

Remove mounting bolt, and then disconnect low-pressure flexible hose from the compressor.

CAUTION:

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

4.

Remove low-pressure flexible hose from the vehicle.

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-64, "Leak Test"

.

LOW-PRESSURE PIPE

LOW-PRESSURE PIPE : Removal and Installation

INFOID:0000000010707896

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-

67, "Perform Lubricant Return Operation"

.

REMOVAL

1.

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

HA-65, "Recy-

cle Refrigerant"

.

2.

Remove fixing clip, and then remove insulator upper side.

3.

Remove cowl top extension. Refer to 

EXT-30, "Removal and Installation"

.

4.

Remove mounting bolt, and then disconnect low-pressure pipe 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.

HA-176

< REMOVAL AND INSTALLATION >

[TYPE 4]

COOLER PIPE AND HOSE

5.

Remove mounting bolt, and then disconnect low-pressure flexible hose from low-pressure pipe.

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 mounting bolt, and then remove low-pressure pipe.

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-64, "Leak Test"

.

HIGH-PRESSURE PIPE 1

HIGH-PRESSURE PIPE 1 : Removal and Installation

INFOID:0000000010707897

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-

67, "Perform Lubricant Return Operation"

.

REMOVAL

1.

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

HA-65, "Recy-

cle Refrigerant"

.

2.

Remove front bumper fascia assembly. Refer to 

EXT-20, "Removal and Installation"

.

3.

Remove mounting bolt, and then disconnect high-pressure pipe 1 from high-hpressure pipe 3.

CAUTION:

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

4.

Remove mounting bolt, and then disconnect high-pressure pipe 1 from the condenser & liquid tank
assembly.

CAUTION:

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

5.

Disconnect refrigerant pressure sensor.

6.

Remove mounting bolt, and then high-pressure pipe 1 from the vehicle.

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-64, "Leak Test"

.

HIGH-PRESSURE PIPE 2

HIGH-PRESSURE PIPE 2 : Removal and Installation

INFOID:0000000010707898

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-

67, "Perform Lubricant Return Operation"

.

REMOVAL

1.

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

HA-65, "Recy-

cle Refrigerant"

.

2.

Remove front bumper fascia assembly. Refer to 

EXT-20, "Removal and Installation"

.

3.

Remove mounting bolt, and then disconnect high-pressure pipe 2 from high-pressure flexible hose.

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.

4.

Remove mounting bolt, and then disconnect high-pressure pipe 2 from condenser & liquid tank assembly.

COOLER PIPE AND HOSE

HA-177

< REMOVAL AND INSTALLATION >

[TYPE 4]

C

D

E

F

G

H

J

K

L

M

A

B

HA

N

O

P

CAUTION:

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

5.

Remove high-pressure pipe 2 from the vehicle.

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-64, "Leak Test"

.

HIGH-PRESSURE PIPE 3

HIGH-PRESSURE PIPE 3 : Removal and Installation

INFOID:0000000010707921

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-

67, "Perform Lubricant Return Operation"

.

REMOVAL

1.

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

HA-65, "Recy-

cle Refrigerant"

.

2.

Disconnect fixing clip, and then remove insulator upper side.

3.

Remove mounting bolt, and then disconnect high-pressure pipe 3 and low-pressure pipe 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.

4.

Remove mounting bolt, and then disconnect high-pressure pipe 3 from the high-pressure pipe 1.

CAUTION:

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

5.

Remove mounting bolt, and then remove high-pressure pipe 3 from the vehicle.

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-64, "Leak Test"

.

REFRIGERANT PRESSURE SENSOR

REFRIGERANT PRESSURE SENSOR : Removal and Installation

INFOID:0000000010707899

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-

67, "Perform Lubricant Return Operation"

.

REMOVAL

1.

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

HA-65, "Recy-

cle Refrigerant"

.

2.

Remove front bumper fascia assembly. Refer to 

EXT-20, "Removal and Installation"

.

3.

Clean refrigerant pressure sensor and its surrounding area, and then remove dust and rust from refriger-
ant pressure sensor.

CAUTION:

Be sure to clean carefully.

4.

Disconnect refrigerant pressure sensor connector.

5.

Use a adjustable wrench or other tool to hold the refrigerant pressure sensor mounting block, and then
remove the refrigerant pressure sensor from high-pressure pipe 1.