Infiniti QX56 (Z62). Manual — part 774
COOLER PIPE AND HOSE
HA-37
< REMOVAL AND INSTALLATION >
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Cap on wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
10. Remove low-pressure pipe from the vhiecle.
INSTALLATION
Note the following items, and 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. Refer to
REAR COOLER PIPE
REAR COOLER PIPE : Removal and Installation
INFOID:0000000006276177
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
22, "Perform Lubricant Return Operation"
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to
form Lubricant Return Operation"
2.
Separate frame and body. Refer to
DLK-251, "Removal and Installation"
.
3.
Remove mounting bolts, and then disconnect high-pressure pipe and low-pressure pipe from rear cooler
& heater pipe assembly.
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
air.
4.
Remove clamps, and then disconnect rear heater bypas hoses from rear cooler & heater pipe assembly.
5.
Remove mounting bolt, and then disconnect rear cooler &. heater pipe assembly from rear expansion
valve.
CAUTION:
Cap or wrap the joint of the A/C piping and rear expansion valve with suitable material such as
vinyl tape to avoid the entry air.
6.
Remove clamps, and then disconnect rear cooler & heater pipe assembly from rear heater pipes.
7.
Remove mounting nuts, and then remove rear cooler pipe cover.
8.
Remove mounting bolts and nuts, and then remove rear cooler & heater pipe assembly from the vehicle.
INSTALLATION
Note the following items, and 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. Refer to
HA-38
< REMOVAL AND INSTALLATION >
CONDENSER
CONDENSER
Exploded View
INFOID:0000000006276178
CONDENSER
CONDENSER : Removal and Installation
INFOID:0000000006276179
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
22, "Perform Lubricant Return Operation"
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to
2.
Remove the radiator core support upper. Refer to
DLK-220, "Removal and Installation"
.
3.
Remove steering oil cooler. Refer to
.
4.
Remove A/T fluid cooler. Refer to
TM-202, "Removal and Installation"
.
5.
Remove mounting bolt, and then disconnect high-pressure flexible hose from condenser.
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
6.
Remove mounting bolt, and then disconnect high-pressure pipe from condenser.
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
7.
Remove mounting bolts, and then remove condenser from the vehicle.
CAUTION:
Be careful not to damage core surface of condenser.
INSTALLATION
Note the following items, and install in the reverse order of removal.
1.
Outlet pipe assembly
2.
Refrigerant pressure sensor
3.
O-ring
4.
Pipe cover
5.
Liquid tank pipe 1
6.
Liquid tank pipe 2
7.
Liquid tank bracket
8.
Liquid tank
9.
Inlet pipe assembly
10. Condenser
Refer to
for symbols in the figure.
JMIIA0627GB
CONDENSER
HA-39
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CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure before installing new condenser. Refer to
Adjusting Procedure for Components Replacement Except Compressor"
• Check for leakages when recharging refrigerant. Refer to
LIQUID TANK
LIQUID TANK : Removal and Installation
INFOID:0000000006276180
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
22, "Perform Lubricant Return Operation"
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to
2.
Remove front bumper fascia. Refer to
EXT-13, "Removal and Installation"
.
3.
Clean liquid tank and its surrounding area, and then remove dust and rust from liquid tank.
CAUTION:
Be sure to clean carefully.
4.
Remove mounting bolts, and then remove liquid tank from the condenser.
CAUTION:
Cap or wrap the joint of the A/C piping and liquid tank with suitable material such as vinyl tape to
avoid the entry of air.
INSTALLATION
Install liquid tank, and then install liquid tank bracket on condenser.
CAUTION:
• Check that liquid tank bracket is securely installed at protrusion of condenser. (Check that liquid
tank bracket never move to a position below center of liquid tank.)
• Replace O-rings of the A/C piping with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure before installing new liquid tank. Refer to
Adjusting Procedure for Components Replacement Except Compressor"
• Check for leakages when recharging refrigerant. Refer to
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR : Removal and Installation
INFOID:0000000006276181
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
22, "Perform Lubricant Return Operation"
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to
2.
Remove front grille. Refer to
EXT-19, "Removal and Installation"
3.
Clean refrigerant pressure sensor and its surrounding area, and then remove dust and rust from refriger-
ant pressure sensor.
CAUTION:
Be sure to clean carefully.
4.
Disconnect refrigerant pressure sensor connector.
5.
Use a adjustable wrench or other tool to hold the refrigerant pressure sensor mounting block, and then
remove the refrigerant pressure sensor from the condenser.
CAUTION:
• Be careful not to damage liquid tank.
• Be careful not to damage core surface of condenser.
• Cap or wrap the joint of the condenser and liquid tank with suitable material such as vinyl tape to
avoid the entry of air.
HA-40
< REMOVAL AND INSTALLATION >
CONDENSER
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
• Replace O-ring with new one. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to
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