Infiniti FX35, FX50 (S51). Manual — part 1131
ELECTRICAL LEAK DETECTOR
HA-37
< PERIODIC MAINTENANCE >
[VQ35HR]
C
D
E
F
G
H
J
K
L
M
A
B
HA
N
O
P
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-38
< REMOVAL AND INSTALLATION >
[VQ35HR]
COMPRESSOR
REMOVAL AND INSTALLATION
COMPRESSOR
Exploded View
INFOID:0000000005249905
Removal and Installation
INFOID:0000000005249906
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2.
Remove air cleaner case (bank 2). Refer to
.
3.
Remove drive belt. Refer to
EM-15, "Removal and Installation"
.
4.
Remove mounting nuts (A), and then disconnect low-pressure
flexible hose (1) and high-pressure flexible hose (2) from com-
pressor.
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
for symbols in the figure.
JSIIA1217GB
JSIIA1218ZZ
JSIIA1219ZZ
COMPRESSOR
HA-39
< REMOVAL AND INSTALLATION >
[VQ35HR]
C
D
E
F
G
H
J
K
L
M
A
B
HA
N
O
P
8.
Remove mounting bolts (A) from compressor (1), using power
tools.
9.
Remove compressor from the upper side of the vehicle.
10. Remove mounting bolt (A), and then remove harness bracket
(1) from compressor (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.
• Check for leakages when recharging refrigerant.
• Check tension of the drive belt after installing compressor. Refer to
Inspection
INFOID:0000000005249907
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.
JSIIA1220ZZ
JSIIA1221ZZ
Clearance
: Refer to
SJIA1918E
HA-40
< REMOVAL AND INSTALLATION >
[VQ35HR]
COOLER PIPE AND HOSE
COOLER PIPE AND HOSE
Exploded View
INFOID:0000000005249908
HA-13, "Refrigerant Connection"
.
LOW-PRESSURE FLEXIBLE HOSE
LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation
INFOID:0000000005249909
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2.
Remove air cleaner case (bank 2). Refer to
.
1.
O-ring
2.
Low-pressure pipe 2
3.
Low-pressure flexible hose
4.
Compressor
5.
Condenser
6.
High-pressure flexible hose
7.
High-pressure pipe 1
8.
Heater & cooling unit assembly
9.
Evaporator
10. Expansion valve
11.
High-pressure pipe 2
12. Low-pressure pipe 1
Refer to
for symbols in the figure.
JSIIA1229GB
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