Infiniti QX4 (R50). Manual — part 488
Compressor Clutch
OVERHAUL
NBHA0073
RHA122F
RHA136EB
REMOVAL
NBHA0074
I
When removing center bolt, hold clutch disc with clutch disc
wrench.
RHA399F
RHA124F
I
Remove the clutch disc using the clutch disc puller.
Insert the holder’s three pins into the holes in the clutch disc.
Rotate the holder clockwise to hook it onto the plate. Then,
tighten the center bolt to remove the clutch disc.
After removing the clutch disc, remove the shims from either
the drive shaft or the clutch disc.
SERVICE PROCEDURE
Compressor Clutch
HA-150
RHA138E
I
Remove the snap ring using external snap ring pliers.
RHA139E
I
Pulley removal
Position the center pulley puller on the end of the drive shaft,
and remove the pulley assembly using any commercially avail-
able pulley puller.
To prevent the pulley groove from being deformed, the
puller claws should be positioned onto the edge of the
pulley assembly.
RHA125F
I
Remove the field coil harness clip using a pair of pliers.
RHA145E
I
Remove the snap ring using external snap ring pliers.
RHA126F
INSPECTION
NBHA0075
Clutch Disc
NBHA0075S01
If the contact surface shows signs of damage due to excessive
heat, replace clutch disc and pulley.
Pulley
NBHA0075S02
Check the appearance of the pulley assembly. If the contact sur-
face of pulley shows signs of excessive grooving, replace clutch
disc and pulley. The contact surfaces of the pulley assembly should
be cleaned with a suitable solvent before reinstallation.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
SC
EL
IDX
SERVICE PROCEDURE
Compressor Clutch (Cont’d)
HA-151
Coil
NBHA0075S03
Check coil for loose connection or cracked insulation.
RHA142E
INSTALLATION
NBHA0076
I
Install the field coil.
Be sure to align the coil’s pin with the hole in the com-
pressor’s front head.
I
Install the field coil harness clip using a screwdriver.
RHA143EA
I
Install the pulley assembly using the installer and a hand
press, and then install the snap ring using snap ring pliers.
RHA127F
I
Install the clutch disc on the drive shaft, together with the
original shim(s). Press the clutch disc down by hand.
RHA086E
I
Using the holder to prevent clutch disc rotation, tighten the bolt
to 14 N·m (1.4 kg-m, 10 ft-lb) torque.
After tightening the bolt, check that the pulley rotates
smoothly.
SERVICE PROCEDURE
Compressor Clutch (Cont’d)
HA-152
RHA087E
I
Check clearance around the entire periphery of clutch disc.
Disc-to-pulley clearance:
0.3 - 0.6 mm (0.012 - 0.024 in)
If the specified clearance is not obtained, replace adjusting
spacer and readjust.
Break-in Operation
NBHA0076S01
When replacing compressor clutch assembly, always carry out the
break-in operation. This is done by engaging and disengaging the
clutch about thirty times. Break-in operation raises the level of
transmitted torque.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
SC
EL
IDX
SERVICE PROCEDURE
Compressor Clutch (Cont’d)
HA-153
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