Infiniti FX35, FX50 (S51). Manual - part 1145

ELECTRICAL LEAK DETECTOR

HA-93

< PERIODIC MAINTENANCE >

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C

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c.

Intake door position: Recirculation

d.

Temperature setting: Max. cold

e.

Fan speed: High

9.

Run engine at 1,500 rpm for at least 2 minutes.

10. Stop the engine and perform leakage check again, steps 4 – 6.

Refrigerant leakages should be checked immediately after stop-
ping the engine. Begin with the leak detector at the compressor.
The pressure on the high-pressure side drops gradually after
refrigerant circulation stops and pressure on the low-pressure
side rises gradually, as shown in the graph. Some leakages are
more easily detected when pressure is high.

11. Check recovery/recycling recharging equipment gauges before connecting recovery/recycling recharging

equipment to vehicle. No refrigerant pressure should be displayed. Recover refrigerant from equipment
lines if pressure is displayed, and then check refrigerant purity.

12. Confirm refrigerant purity in supply tank using recovery/recycling recharging equipment and refrigerant

identifier.

13. Confirm refrigerant purity in vehicle A/C system using recovery/recycling recharging equipment and refrig-

erant identifier.

14. Discharge A/C system using approved refrigerant recovery equipment. Repair the leaking fitting or com-

ponent if necessary.

15. Evacuate and recharge A/C system and perform the leakage test to confirm no refrigerant leakages.

16. Perform A/C performance test to ensure system works normally.

SHA839E

HA-94

< REMOVAL AND INSTALLATION >

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COMPRESSOR

REMOVAL AND INSTALLATION

COMPRESSOR

Exploded View

INFOID:0000000005249960

Removal and Installation

INFOID:0000000005249961

REMOVAL

1.

Remove cooling fan assembly. Refer to 

CO-42, "Exploded View"

.

2.

Remove low-pressure pipe 3. Refer to 

HA-96, "Exploded View"

.

3.

Remove drive belt. Refer to 

EM-164, "Removal and Installation"

.

4.

Remove mounting nut (A), and then disconnect high-pressure
flexible 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.

5.

Disconnect compressor (ECV) connector (A).

6.

Disconnect compressor (magnet clutch) connector (B).

7.

Remove harness clip (C)

1.

Compressor

Refer to 

GI-4, "Components"

 for symbols in the figure.

JSIIA1223GB

JSIIA1224ZZ

JSIIA1225ZZ

COMPRESSOR

HA-95

< REMOVAL AND INSTALLATION >

[VK50VE]

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8.

Remove mounting bolt (A), and water suction pipe (1) a position
without the hindrance for work. Refer to 

CO-46, "Exploded

View"

.

9.

Remove engine undercover, using power tools.

10. Remove mounting bolt (A), and remove harness bracket a posi-

tion without the hindrance for work.

11. Remove mounting bolt (B) from compressor (1).

12. Remove mounting bolts (A) from compressor (1), using power

tools.

13. Remove compressor from the upper side of the vehicle.

INSTALLATION

Installation is basically 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.
• Check tension of the drive belt after installing compressor. Refer to 

EM-163, "Checking"

.

Inspection

INFOID:0000000005249962

CHECK DISC TO PULLEY CLEARANCE

Check the clearance (B) between pulley assembly (1) and clutch
disc (2) along the entire periphery with a feeler gauge (A).

Replace compressor if specified clearance is not obtained.

JSIIA1226ZZ

JSIIA1227ZZ

JSIIA1228ZZ

Clearance

: Refer to 

HA-116, "Compressor"

.

JSIIA0087ZZ

HA-96

< REMOVAL AND INSTALLATION >

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COOLER PIPE AND HOSE

COOLER PIPE AND HOSE

Exploded View

INFOID:0000000005249963

Refer to 

HA-69, "Refrigerant Connection"

.

LOW-PRESSURE FLEXIBLE HOSE

LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation

INFOID:0000000005249964

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"

.

1.

O-ring

2.

Low-pressure pipe 2

3.

Low-pressure flexible hose

4.

Low-pressure pipe 3

5.

Compressor

6.

Condenser

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.

JSIIA1234GB