Infiniti FX35, FX50 (S51). Manual - part 1146

COOLER PIPE AND HOSE

HA-97

< REMOVAL AND INSTALLATION >

[VK50VE]

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4.

Remove mounting bolt (A) from low-pressure flexible hose
bracket (1).

5.

Disconnect one-touch joint between low-pressure flexible hose
(2) and low-pressure pipe 2 (3) with disconnector (B) (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.

6.

Remove mounting nut (A), and then remove low-pressure flexi-
ble hose (1).

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.

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.

HIGH-PRESSURE FLEXIBLE HOSE

HIGH-PRESSURE FLEXIBLE HOSE : Removal and Installation

INFOID:0000000005249965

REMOVAL

1.

Remove hoodledge cover LH. Refer to 

EXT-22, "Exploded View"

.

2.

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

3.

Remove air cleaner case (bank 1). Refer to 

EM-177, "Exploded View"

.

4.

Remove mounting bolt (A) from high-pressure flexible hose
bracket (1).

5.

Disconnect one-touch joint between high-pressure flexible hose
(2) and condenser pipe assembly (3) with disconnector (B)
(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.

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HA-98

< REMOVAL AND INSTALLATION >

[VK50VE]

COOLER PIPE AND HOSE

6.

Remove mounting nut (A), and remove low-pressure flexible
hose (1) a position without the hindrance for work.

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.

7.

Remove mounting nut (A), and then remove high-pressure flexi-
ble hose (1).

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.

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.

HIGH-PRESSURE PIPE 1

HIGH-PRESSURE PIPE 1 : Removal and Installation

INFOID:0000000005249966

REMOVAL

1.

Remove low-pressure flexible hose and low-pressure pipe 2. Refer to 

HA-96, "Exploded View"

.

2.

Remove cramp (A), and then disconnect vacuum hose (1).
Refer to 

BR-37, "Exploded View"

.

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COOLER PIPE AND HOSE

HA-99

< REMOVAL AND INSTALLATION >

[VK50VE]

C

D

E

F

G

H

J

K

L

M

A

B

HA

N

O

P

3.

Remove ground bolts (A).

4.

Remove high-pressure pipe 1 (1) from vehicle clip (B).

5.

Remove high-pressure pipe 1 (1) from vehicle clip (A).

6.

Disconnect one-touch joint between high-pressure pipe 1 and
condenser pipe assembly with disconnector (B) (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.

7.

Disconnect one-touch joint between high-pressure pipe 1 (2)
and high-pressure pipe 2 (1) 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.

8.

Remove high-pressure pipe 1.

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.

LOW-PRESSURE PIPE 2

LOW-PRESSURE PIPE 2 : Removal and Installation

INFOID:0000000005249967

REMOVAL

1.

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

2.

Remove cowl top cover. Refer to 

EXT-22, "Exploded View"

.

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HA-100

< REMOVAL AND INSTALLATION >

[VK50VE]

COOLER PIPE AND HOSE

3.

Remove mounting bolt (A) from low-pressure flexible hose
bracket (1).

4.

Disconnect one-touch joint between low-pressure flexible hose
(2) and low-pressure pipe 2 (3) with disconnector (B) (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 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.

6.

Remove low-pressure pipe 2.

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.

LOW-PRESSURE PIPE 3

LOW-PRESSURE PIPE 3 : Removal and Installation

INFOID:0000000005249968

REMOVAL

1.

Remove hoodledge cover LH. Refer to 

EXT-22, "Exploded View"

.

2.

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

3.

Remove air cleaner case (bank 1). Refer to 

EM-177, "Exploded View"

.

4.

Remove mounting nut (A), and remove low-pressure flexible
hose (1) a position without the hindrance for work.

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.

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