Infiniti M45 (Y34). Manual - part 164

REFRIGERANT LINES

ATC-141

C

D

E

F

G

H

I

K

L

M

A

B

ATC

6.

Check clearance around the entire periphery of clutch disc.

If the specified clearance is not obtained, replace adjusting
spacer and readjust.

Break-In Operation

When replacing compressor clutch assembly, always carry out the break-in operation. This is done by engag-
ing and disengaging the clutch about thirty times. Break-in operation raises the level of transmitted torque.

Removal and Installation of Low-Pressure Flexible Hose

AJS0008Q

REMOVAL

1.

Remove engine cover. Refer to 

EM-12, "ENGINE ROOM COVER"

 .

2.

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

3.

Remove tower bar, air cleaner assembly, air duct and air inlet pipe. Refer to 

FSU-6, "FRONT SUSPEN-

SION ASSEMBLY"

  and 

EM-16, "AIR CLEANER AND AIR DUCT"

 .

4.

Drain the coolant from cooling system, and disconnect two
heater hoses. Refer to 

MA-12, "Changing Engine Coolant"

 .

5.

Disconnect vacuum hose from intake manifold. Refer to 

EM-18,

"INTAKE MANIFOLD"

 .

6.

Remove accelerator wire bracket.

7.

Remove high-pressure pipe from the clip.

8.

Disconnect high-pressure pipe from condenser and evaporator.

9.

Remove clip from low-pressure flexible hose.

10. Remove mounting bolt and nut from low-pressure flexible hose.

CAUTION:

Cap or wrap the joint of the pipe with a suitable material such as
vinyl tape to avoid the entry of air.

11. Remove low-pressure flexible hose.

Disc to pulley 
clearance

: 0.25 - 0.6 mm (0.010 - 0.024 in)

RJIA0965E

RJIA1320E

RJIA1321E

RJIA1322E

ATC-142

REFRIGERANT LINES

INSTALLATION

Installation is basically the reverse order of removal.

CAUTION:

●

Replace low-pressure flexible hose O-ring with a new one. Apply compressor oil prior to installa-
tion.

●

When recharging refrigerant, check leaks.

Removal and Installation of High-Pressure Flexible Hose

AJS0008R

REMOVAL

1.

Remove engine cover. Refer to 

EM-12, "ENGINE ROOM COVER"

 .

2.

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

3.

Remove air cleaner assembly, air duct and air inlet pipe. Refer to 

EM-16, "AIR CLEANER AND AIR

DUCT"

 .

4.

Remove mounting bolt and nut from high-pressure flexible hose,
then remove it.

CAUTION:

Cap or wrap the joint of the pipe with a suitable material
such as vinyl tape to avoid the entry of air.

INSTALLATION

Installation is basically the reverse order of removal.

CAUTION:

●

Replace high-pressure flexible hose O-ring with a new one. Apply compressor oil prior to installa-
tion.

●

When recharging refrigerant, check for leaks.

RJIA1323E

REFRIGERANT LINES

ATC-143

C

D

E

F

G

H

I

K

L

M

A

B

ATC

Removal and Installation of High-Pressure Pipe

AJS0008S

REMOVAL

1.

Remove engine cover. Refer to 

EM-12, "ENGINE ROOM COVER"

 .

2.

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

3.

Drain coolant from cooling system and disconnect heater hoses.
Refer to 

MA-12, "Changing Engine Coolant"

 .

4.

Remove low-pressure flexible hose. Refer to 

ATC-141,

"Removal and Installation of Low-Pressure Flexible Hose"

 .

5.

Remove high-pressure flexible hose. Refer to 

ATC-142,

"Removal and Installation of High-Pressure Flexible Hose"

 .

6.

Remove high-pressure pipe.

CAUTION:

Cap or wrap the joint of the pipe with a suitable material
such as vinyl tape to avoid the entry of air.

INSTALLATION

Installation is basically the reverse order of removal.

CAUTION:

●

Replace high-pressure pipe O-ring with a new one. Apply compressor oil prior to installation.

●

When recharging refrigerant, check for leaks.

Removal and Installation of Refrigerant Pressure Sensor

AJS0008U

REMOVAL

1.

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

2.

Remove front grille. Refer to 

EI-19, "FRONT GRILLE"

 .

3.

Disconnect refrigerant pressure sensor connector, and then
remove refrigerant pressure sensor.

CAUTION:

●

Secure refrigerant pressure sensor installation pipe with an
open-end wrench. Be careful not to deform pipe during the
operation.

●

Be careful not to damage the core surface of the condenser
during the operation.

INSTALLATION

Installation is basically the reverse order of removal.

CAUTION:

●

Replace refrigerant pressure sensor O-ring with a new one. Apply compressor oil prior to installa-
tion.

●

When recharging refrigerant, check for leaks.

RJIA1314E

RJIA3089E

ATC-144

REFRIGERANT LINES

Removal and installation of Condenser

AJS000QU

REMOVAL

1.

Remove engine cover and front grille. Refer to 

EM-12, "ENGINE ROOM COVER"

  and 

EI-19, "FRONT

GRILLE"

 .

2.

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

3.

Remove tower bar, air cleaner assembly, air duct and air inlet pipe. Refer to 

FSU-6, "FRONT SUSPEN-

SION ASSEMBLY"

  and 

EM-16, "AIR CLEANER AND AIR DUCT"

 .

4.

Disconnect high-pressure flexible hose and high-pressure pipe
from the condenser.

CAUTION:

Cap or wrap the joint of the pipe with a suitable material
such as vinyl tape to avoid the entry of air.

5.

 Remove oil cooler pipe clips from the left side of the condenser.

6.

Remove oil cooler from the condenser (if equipped).

7.

Remove battery, battery tray and radiator mounting bracket.
Refer to 

SC-4, "BATTERY"

 .

8.

Remove cooling fan shroud. Refer to

CO-19, "Removal and

Installation"

 .

9.

Remove mounting bolts from condenser.

10. Slide condenser up and remove it from the radiator clip.

11. Remove radiator from the lower mount, move it to the engine

side, then remove condenser between the radiator and the radi-
ator core support.

CAUTION:

Be careful not to damage the core surface of the condenser
and the radiator.

INSTALLATION

Installation is basically the reverse order of removal.

CAUTION:

●

Replace high-pressure pipe and high-pressure flexible hose
O-rings with new ones. Apply compressor oil prior to instal-
lation.

●

When recharging refrigerant, check for leaks.

RJIA0141E

RJIA1324E

RJIA0332E

RJIA0333E