Nissan X-Trail 32. Manual - part 1354

NOISE

HA-75

< SYMPTOM DIAGNOSIS >

[MR20DD]

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NOISE

Symptom Table

INFOID:0000000011001059

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-68, "Inspection"

.

Magnet clutch

Contact of clutch disc with pulley.

Check clearance between 
clutch disc and pulley. Refer 
to 

HA-77, "Inspection"

.

Compressor body

Loosened compressor mounting bolts.

Check bolts for tightness. 
Refer to 

HA-76, "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-78, "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-132, "Drive Belt"

 .

Internal compressor parts get locked

Replace compressor.

HA-76

< REMOVAL AND INSTALLATION >

[MR20DD]

COMPRESSOR

REMOVAL AND INSTALLATION

COMPRESSOR

Exploded View

INFOID:0000000011001060

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-

68, "Perform Lubricant Return Operation"

.

REMOVAL

1.

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

HA-66, "Recy-

cle Refrigerant"

.

2.

Remove auto-tensioner. Refer to 

EM-29, "Removal and Installation"

.

3.

Remove mounting bolt 

, and then disconnect low-pressure

flexible hose 

 from 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.

Compressor

: N·m (kg-m, ft-lb)

JMIIA1708GB

: Vehicle front

JMIIA3324ZZ

COMPRESSOR

HA-77

< REMOVAL AND INSTALLATION >

[MR20DD]

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4.

Remove mounting bolt 

, and then disconnect high-pressure

flexible hose 

 from 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.

5.

Disconnect harness connector and remove mounting bolts, and then remove compressor.

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.
• Check for leakages when recharging refrigerant.
• Check tension of the drive belt after installing compressor. Refer to 

EM-23, "Adjustment"

.

Inspection

INFOID:0000000011001063

CHECK DISC TO PULLEY CLEARANCE

Check the clearance (B) between pulley assembly 

 and clutch disc

 along the entire periphery with a feeler gauge (A).

CAUTION:

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

: Vehicle front

JMIIA3325ZZ

Clearance

: Refer to 

HA-93, "Compressor"

.

SJIA1918E

HA-78

< REMOVAL AND INSTALLATION >

[MR20DD]

COOLER PIPE AND HOSE

COOLER PIPE AND HOSE

Exploded View

INFOID:0000000011001064

LOW-PRESSURE FLEXIBLE HOSE

LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation

INFOID:0000000011001065

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-

68, "Perform Lubricant Return Operation"

.

REMOVAL

1.

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

HA-66, "Recy-

cle Refrigerant"

.

2.

Disengage fixing clips, and then remove insulator.

High-pressure pipe

O-ring

Condenser & liquid tank assembly

Compressor

High-pressure flexible hose

Low-pressure flexible hose

Tube clip

A/C unit assembly

Tube mounting rubber

Tube clip

Pipe bracket A

Pipe bracket B

Pipe bracket C

: Always replace after disassembly.

: N·m (kg-m, in-lb)

JMIIA3406GB