Nissan X-Trail 32. Instruction — part 1354
NOISE
HA-75
< SYMPTOM DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
J
K
L
M
A
B
HA
N
O
P
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
.
Magnet clutch
Contact of clutch disc with pulley.
Check clearance between
clutch disc and pulley. Refer
to
Compressor body
Loosened compressor mounting bolts.
Check bolts for tightness.
Refer to
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
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
.
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
INFOID:0000000011001061
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
68, "Perform Lubricant Return Operation"
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to
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]
C
D
E
F
G
H
J
K
L
M
A
B
HA
N
O
P
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
.
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
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
68, "Perform Lubricant Return Operation"
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to
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
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