Nissan Leaf. Manual - part 731

HA-46

< REMOVAL AND INSTALLATION >

[WITH HEAT PUMP SYSTEM]

COOLER PIPE AND HOSE

WARNING:

 

To prevent electric shock hazards, be sure to wear protective gear.

CAUTION:

To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports

of the pipe and electric compressor from the atmosphere.

6. Disconnect low-pressure flexible hose from the vehicle.

INSTALLATION

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

CAUTION:

• To prevent degradation in insulation performance, use special electric compressor oil as the com-

pressor oil.

• In order to prevent conventional PAG oil from becoming mixed in, never reuse recovered compres-

sor oil and instead always use new oil. The use of oil including the conventional PAG oil may

degrade the performance of insulation.

• To prevent performance degradation, never use a fluorescent agent in order to detect refrigerant

leakage. Also be careful that a fluorescent agent never enter the oil.

• To prevent leakage of refrigerant, replace the O-ring with a new one. Apply a coat of compressor oil

to the O-ring prior to installation.

• Perform a check for refrigerant leakage when charging with refrigerant. Refer to 

HA-26, "Check

Refrigerant Leakage"

.

HIGH-PRESSURE PIPE
HIGH-PRESSURE PIPE : Removal and Installation

INFOID:0000000010122122

DANGER:

Since hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of

electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are

handled incorrectly. Be sure to follow the correct work procedures when performing inspection and

maintenance.

WARNING:

• Be sure to remove the service plug in order to disconnect the high voltage circuits before perform-

ing inspection or maintenance of high voltage system harnesses and parts.

• The removed service plug must always be carried in a pocket of the responsible worker or placed in

the tool box during the procedure to prevent the plug from being connected by mistake.

• Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses

before beginning work on the high voltage system.

• Never allow workers other than the responsible person to touch the vehicle containing high voltage

parts. To keep others from touching the high voltage parts, these parts must be covered with an insu-

lating sheet except when using them. Refer to 

GI-34, "High Voltage Precautions"

.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise

instructed in the Service Manual. A malfunction may occur if this is not observed.

REMOVAL

1. Remove low-pressure flexible hose. Refer to 

HA-45, "LOW-PRESSURE FLEXIBLE HOSE : Removal and

Installation"

.

2. Remove washer tank inlet. Refer to 

WW-43, "Exploded View"

.

3. Remove cowl top extension. Refer to 

EXT-19, "Removal and Installation"

.

COOLER PIPE AND HOSE

HA-47

< REMOVAL AND INSTALLATION >

[WITH HEAT PUMP SYSTEM]

C

D

E

F

G

H

J

K

L

M

A

B

HA

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4. Remove bolts (A), and then disconnect high-pressure flexible hose (1) from the high-pressure pipe (2).

CAUTION:

To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports

of the pipe and condenser from the atmosphere.

5. Remove bolt (A), and then disconnect high-pressure pipe (2) from the inner condenser.

CAUTION:

To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports

of the pipe and expansion valve from the atmosphere.

6. Remove nut (A) and disconnect high-pressure pipe from the

vehicle.

INSTALLATION

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

CAUTION:

• To prevent degradation in insulation performance, use special electric compressor oil as the com-

pressor oil.

• In order to prevent conventional PAG oil from becoming mixed in, never reuse recovered compres-

sor oil and instead always use new oil. The use of oil including the conventional PAG oil may

degrade the performance of insulation.

• To prevent performance degradation, never use a fluorescent agent in order to detect refrigerant

leakage. Also be careful that a fluorescent agent never enter the oil.

• To prevent leakage of refrigerant, replace the O-ring with a new one. Apply a coat of compressor oil

to the O-ring prior to installation.

• Perform a check for refrigerant leakage when charging with refrigerant. Refer to 

HA-26, "Check

Refrigerant Leakage"

.

2-WAY VALVE AND 3-WAY VALVE ASSEMBLY
2-WAY VALVE AND 3-WAY VALVE ASSEMBLY : Removal and Installation

INFOID:0000000010122123

DANGER:

JMIIA2654ZZ

JMIIA2658ZZ

JMIIA2663ZZ

HA-48

< REMOVAL AND INSTALLATION >

[WITH HEAT PUMP SYSTEM]

COOLER PIPE AND HOSE

Since hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of

electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are

handled incorrectly. Be sure to follow the correct work procedures when performing inspection and

maintenance.

WARNING:

• Be sure to remove the service plug in order to disconnect the high voltage circuits before perform-

ing inspection or maintenance of high voltage system harnesses and parts.

• The removed service plug must always be carried in a pocket of the responsible worker or placed in

the tool box during the procedure to prevent the plug from being connected by mistake.

• Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses

before beginning work on the high voltage system.

• Never allow workers other than the responsible person to touch the vehicle containing high voltage

parts. To keep others from touching the high voltage parts, these parts must be covered with an insu-

lating sheet except when using them. Refer to 

GI-34, "High Voltage Precautions"

.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise

instructed in the Service Manual. A malfunction may occur if this is not observed.

REMOVAL

1. Use the refrigerant recovery equipment (for HFC134a) and recover the refrigerant. Refer to 

HA-27, "Recy-

cle Refrigerant"

.

2. Remove radiator upper grille. Refer to 

DLK-165, "RADIATOR UPPER GRILLE : Removal and Installa-

tion"

.

3. Remove washer tank inlet. Refer to 

WW-43, "Exploded View"

.

4. Remove bolts (A), and then disconnect high-pressure flexible hose (1) from the high-pressure pipe (2).

CAUTION:

To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports

of the hose and pipe from the atmosphere.

5. Remove bolts (A), and then disconnect high-pressure hoses and pipes (1) from condenser (2).

CAUTION:

To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports

of the hose and pipe from the atmosphere.

JMIIA2654ZZ

JMIIA2656ZZ

COOLER PIPE AND HOSE

HA-49

< REMOVAL AND INSTALLATION >

[WITH HEAT PUMP SYSTEM]

C

D

E

F

G

H

J

K

L

M

A

B

HA

N

O

P

6. Remove bolt (A) and then disconnect high-pressure pipes (1) and (2) from inner condenser.

CAUTION:

To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports

and the hose and pipe from the atmosphere.

7. Remove bolt (A) and then disconnect low pressure pipes (1) from evaporator.

CAUTION:

To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports

and the pipes from the atmosphere.

8. Remove bolt (A), and then disconnect low-pressure hose (1) from accumulator assembly.

CAUTION:

To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports

and the hose from the atmosphere.

9. Disconnect harness connectors, remove bolts (A), and then remove the 2-way valve and 3-way valve

assembly.

JMIIA2658ZZ

JMIIA2659ZZ

: Vehicle front

JMIIA2657ZZ

JMIIA2660ZZ