Nissan Qashqai J11. Manual - part 1086

HA-170

< SYMPTOM DIAGNOSIS >

[TYPE 4]

NOISE

NOISE

Symptom Table

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Symptom

Noise source

Probable cause

Corrective action

Unusual noise from compressor 
when A/C is ON.

Inside of compressor

Wear, breakage, or clogging of foreign 
material in inner parts.

Check compressor oil. Re-
fer to 

HA-114, "Inspection"

.

Magnet clutch

Contact of clutch disc with pulley.

Check clearance between 
clutch disc and pulley. Refer 
to 

HA-172, "Inspection"

.

Compressor body

Loosened compressor mounting bolts.

Check bolts for tightness. 
Refer to 

HA-171, "Exploded 

View"

.

Unusual noise from cooler piping.

Cooler piping (pipe and 
flexible hose)

Improper installation of clip and brack-
et.

Check the installation condi-
tion of the cooler piping. Re-
fer to 

HA-173, "Exploded 

View"

.

Unusual noise from expansion 
valve when A/C is ON.

Expansion valve

Shortage of refrigerant.

• Check for leakage.
• Collect all refrigerant, 

evacuate refrigerant cycle 
again, and then refill it 
with the specified amount 
of refrigerant.

Wear, breakage, or clogging of foreign 
material in inner parts.

Eliminate foreign material 
from expansion valve, or re-
place it.

Unusual noise from belt.

—

Loosened belt

Check belt tension. Refer to 

EM-499, "Drive Belt"

  (K9K), 

EM-635, "Drive Belts"

 

(R9M).

Internal compressor parts get locked

Replace compressor.

COMPRESSOR

HA-171

< REMOVAL AND INSTALLATION >

[TYPE 4]

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REMOVAL AND INSTALLATION

COMPRESSOR

Exploded View

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REMOVAL

Removal and Installation

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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 alternator. Refer to the following items.
• K9K engine models: Refer to 

CHG-32, "K9K : Removal and Installation"

.

• R9M engine models (with stop/start system): Refer to 

CHG-33, "R9M : Removal and Installation"

.

• R9M engine models (without stop/start system): Refer to 

CHG-56, "R9M : Removal and Installation"

.

3.

Remove mounting bolts, and then disconnect low-pressure flexible hose and 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.

Disconnect compressor harness connectors.

5.

Remove mounting bolts, and then remove compressor form 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.
• Perform lubricant adjusting procedure before installing new compressor. Refer to 

HA-68, "Lubricant

Adjusting Procedure for Compressor Replacement"

.

• Check for leakages when recharging refrigerant. Refer to 

HA-64, "Leak Test"

.

1.

Compressor

: N·m (kg-m, ft-lb)

JMIIA3526GB

HA-172

< REMOVAL AND INSTALLATION >

[TYPE 4]

COMPRESSOR

Inspection

INFOID:0000000010707892

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).

CAUTION:

Replace compressor if the specified clearance is not obtained,
replace adjusting spacer and readjust.

Clearance

: Refer to 

HA-190, "Compressor"

.

JSIIA0087ZZ

COOLER PIPE AND HOSE

HA-173

< REMOVAL AND INSTALLATION >

[TYPE 4]

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HA

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COOLER PIPE AND HOSE

Exploded View

INFOID:0000000010707893

K9K engine models

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)