Infiniti M35/M45 Y50. Manual — part 151
REFRIGERANT LINES
ATC-155
C
D
E
F
G
H
I
K
L
M
A
B
ATC
4.
Remove mounting nuts from low-pressure flexible hose and
high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of low-pressure flexible hose and
high-pressure flexible hose with suitable material such as
vinyl tape to avoid the entry of air.
5.
Disconnect compressor (magnet clutch and ECV) connectors.
6.
Remove A/C compressor belt. Refer to
7.
Remove mounting bolts from compressor, using power tools.
8.
Remove compressor downward of the vehicle.
VK45DE
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2.
Remove air cleaner case and air duct. Refer to
EM-177, "AIR CLEANER AND AIR DUCT"
3.
Remove engine undercover, using power tools.
4.
Remove mounting nut between low-pressure flexible hose and low-pressure pipe. Refer to
"Removal and Installation of Low-pressure Flexible Hose and Pipe"
RJIA4155E
RJIA4158E
SJIA1791E
ATC-156
REFRIGERANT LINES
5.
Remove mounting nuts from low-pressure pipe and high-pres-
sure flexible hose.
CAUTION:
Cap or wrap the joint of low-pressure pipe and high-pres-
sure flexible hose with suitable material such as vinyl tape
to avoid the entry of air.
6.
Remove A/C compressor belt. Refer to
.
7.
Disconnect compressor (magnet clutch and ECV) connectors.
8.
Remove mounting bolts from compressor, using power tools.
9.
Remove compressor downward of the vehicle.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
●
Replace O-rings of low-pressure flexible hose, low-pressure pipe (VK45DE) and high-pressure
flexible hose with new ones, and then apply compressor oil to it when installing it.
●
When recharging refrigerant, check for leaks.
Check Disc to Pulley Clearance
NJS000I7
Check clearance around entire periphery of clutch disc.
If specified clearance is not obtained, replace compressor.
RJIA4154E
RJIA4156E
Disc to pulley
clearance
: 0.3 - 0.6 mm (0.012 - 0.024 in)
RHA087E
REFRIGERANT LINES
ATC-157
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Removal and Installation of Low-pressure Flexible Hose and Pipe
NJS000HP
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2.
Remove engine cover. Refer to
3.
Remove air cleaner case and air duct. Refer to
EM-19, "AIR CLEANER AND AIR DUCT"
(VQ35DE) or
EM-177, "AIR CLEANER AND AIR DUCT"
(VK45DE).
4.
Remove cowl top cover. Refer to
5.
Remove mounting bolt from low-pressure flexible hose bracket.
6.
Disconnect one-touch joint between low-pressure flexible hose
and low-pressure pipe 1.
a.
Set a disconnector (SST: 9253089916) on A/C piping.
b.
Slide a disconnector toward vehicle front until it clicks.
c.
Slide A/C piping toward vehicle front and disconnect it.
CAUTION:
Cap or wrap the joint of low-pressure flexible hose and low-
pressure pipe 1 with suitable material such as vinyl tape to
avoid the entry of air.
7.
Remove mounting nut from low-pressure flexible hose
(VQ35DE).
CAUTION:
Cap or wrap the joint of compressor and low-pressure flexi-
ble hose with suitable material such as vinyl tape to avoid
the entry of air.
8.
Remove mounting nuts from low-pressure flexible hose and low-
pressure pipe (VK45DE).
CAUTION:
Cap or wrap the joint of compressor, low-pressure flexible
hose and low-pressure pipe with suitable material such as
vinyl tape to avoid the entry of air.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA4159E
RJIA4160E
RJIA4162E
RJIA4161E
ATC-158
REFRIGERANT LINES
CAUTION:
●
Replace O-rings of low-pressure flexible hose and low-pressure pipe (VK45DE) with new ones,
and then apply compressor oil to it when installing it.
●
Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.
●
Insert piping securely until a click is heard.
●
After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.
●
When recharging refrigerant, check for leaks.
Removal and Installation of High-pressure Flexible Hose
NJS000HQ
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2.
Remove engine cover. Refer to
(VK45DE).
3.
Remove air cleaner case and air duct. Refer to
EM-19, "AIR CLEANER AND AIR DUCT"
(VQ35DE) or
EM-177, "AIR CLEANER AND AIR DUCT"
(VK45DE).
4.
Remove mounting bolt from high-pressure flexible hose bracket.
5.
Disconnect one-touch joint between high-pressure flexible hose
and condenser.
a.
Set a disconnector (SST: 9253089912) on A/C piping.
b.
Slide a disconnector backward until it clicks.
c.
Slide A/C piping backward and disconnect it.
CAUTION:
Cap or wrap the joint of condenser and high-pressure flexi-
ble hose with suitable material such as vinyl tape to avoid
the entry of air.
6.
Remove low-pressure pipe (VK45DE). Refer to
ATC-157, "Removal and Installation of Low-pressure Flex-
7.
Remove mounting nut from high-pressure flexible hose, and
then remove high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of compressor and high-pressure flex-
ible hose with suitable material such as vinyl tape to avoid
the entry of air.
Low-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)
RJIA4163E
RJIA4164E
RJIA4166E
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