Infiniti Q45. Manual — part 139
REFRIGERANT LINES
ATC-151
C
D
E
F
G
H
I
K
L
M
A
B
ATC
3.
Remove snap ring using external snap ring pliers.
4.
Position center pulley puller on the end of the drive shaft, and
remove pulley assembly using any commercially available pul-
ley puller.
To prevent pulley groove from being deformed, puller claws
should be positioned into the edge of pulley assembly.
5.
Remove field coil harness clip using a pair of pliers.
6.
Remove snap ring using external snap ring pliers.
RHA138E
RHA139E
RHA125F
RHA145E
ATC-152
REFRIGERANT LINES
Inspection
Clutch disc
If the contact surface shows signs of damage due to excessive heat,
replace clutch disc and pulley.
Pulley
Check appearance of pulley assembly. If contact surface of pulley
shows signs of excessive grooving, replace clutch disc and pulley.
The contact surfaces should be cleaned with a suitable solvent
before reinstallation.
Coil
Check coil for loose connection or cracked insulation.
INSTALLATION
1.
Install field coil.
Be sure to align coil’s pin with the hole in compressor’s front
head.
2.
Install field coil harness clip using a screwdriver.
3.
Install pulley assembly using installer (SST) and a hand press,
and then install snap ring using snap ring pliers.
4.
Install clutch disc on drive shaft, together with original shim(s).
Press clutch disc down by hand.
RHA126F
RHA142E
RHA143EA
RHA127F
REFRIGERANT LINES
ATC-153
C
D
E
F
G
H
I
K
L
M
A
B
ATC
5.
Using a holder to prevent clutch disc rotation.
After tightening the bolt, make sure the pulley rotates smoothly.
6.
Check clearance around the entire periphery of clutch disc.
If specified clearance is not obtained, replace adjusting spacer
and readjust.
Break-In Operation
When replacing compressor clutch assembly, always carry out break-in operation. This is done by engaging
and disengaging clutch about thirty-times. Break-in operation raises level of transmitted torque.
Removal and Installation of Low-Pressure Flexible Hose and Pipe
NJS0009L
REMOVAL
1.
Remove engine cover and air cleaner cover, using power tools. Refer to
2.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3.
Drain coolant from cooling system, and disconnect two heater
hoses. Refer to
CO-8, "Changing Engine Coolant"
.
4.
Remove tower bar, air cleaner assembly, air duct and air inlet
pipe. Refer to
FSU-5, "FRONT SUSPENSION ASSEMBLY"
and
EM-17, "AIR CLEANER AND AIR DUCT"
.
5.
Remove low-pressure flexible hose from clip.
: 14 N·m (1.4 kg-m, 10 ft-lb)
RHA086E
Disc to pulley
clearance
: 0.25 - 0.6 mm (0.010 - 0.024 in)
RJIA0965E
RJIA0318E
RJIA3209E
ATC-154
REFRIGERANT LINES
6.
Remove vehicle harness from clip.
7.
Remove mounting bolts from low-pressure flexible hose bracket.
8.
Remove clip from low-pressure flexible hose.
9.
Remove mounting nut from low-pressure flexible hose.
CAUTION:
Cap or wrap the joint of the pipe with a suitable material
such as vinyl tape to avoid the entry of air.
10. Remove low-pressure flexible hose.
11. Remove high-pressure flexible hose from compressor.
12. Remove mounting nut, and then remove low-pressure pipe.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
●
Replace O-rings of low-pressure flexible hose with new ones, and then apply compressor oil to it
when installing it.
●
When recharging refrigerant, check for leaks.
Removal and Installation of High-Pressure Flexible Hose
NJS0009M
REMOVAL
1.
Remove engine cover and air cleaner cover, using power tools. Refer to
.
2.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3.
Remove air cleaner assembly, air duct and air inlet pipe. Refer to
.
4.
Remove low-pressure flexible hose from low-pressure pipe. Refer to
ATC-153, "Removal and Installation
of Low-Pressure Flexible Hose and Pipe"
RJIA0328E
RJIA2693E
RJIA2694E
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