Jeep XJ. Manual — part 520
RIGHT-HAND DRIVE - 4.0L ENGINE
The suction and discharge lines for this model are
individual components and are secured to a manifold
block on the compressor with block fittings (Fig. 4).
There is also a jumper line installed between the dis-
charge line and the condenser inlet that is secured
with refrigerant line couplers at each end. Each of
these components is available as a separate service
part.
The suction and discharge line components can be
removed from or installed on the vehicle individually,
or as a unit. Otherwise, the service procedures are
the same as those for the other applications. Tighten
the additional mounting hardware as follows:
• Suction line to manifold block nut - 9 N·m (80
in. lbs.)
• Discharge line to manifold block nut - 9 N·m (80
in. lbs.)
• Manifold block to compressor screw - 28 N·m
(250 in. lbs.).
COMPRESSOR - 2.5L VM DIESEL
REMOVAL
(1) Disconnect the negative battery cable.
(2) Recover the refrigerant. See Refrigerant Recov-
ery in this group for the procedure.
(3) Disconnect the A/C compressor clutch electrical
connector (Fig. 5).
(4) Remove the suction and discharge refrigerant
line retaining bolts from the compressor and plug the
openings.
(5) Raise the vehicle on a hoist.
(6) Loosen all (4) H-block retaining bolts. Do not
remove at this time.
Fig. 4 Suction and Discharge Line Remove/Install - Right-Hand Drive 4.0L Engine
1 – CLIP
2 – COMPRESSOR
3 – DISCHARGE LINE
4 – SUCTION LINE
5 – NUT
6 – ACCUMULATOR
7 – NUT
8 – SCREW
9 – MANIFOLD BLOCK
10 – CONDENSER
24 - 6
HEATING AND AIR CONDITIONING
XJ
REMOVAL AND INSTALLATION (Continued)
2000 JEEP CHEROKEE
NOTE: Mark the H-Block position in relation to the
power steering pump so it may be reinstalled in the
same position.
(7) Remove the (2) H-block bolts from the power
steering pump side of the block (Fig. 5).
(8) Remove the serpentine drive belt. Refer to
Group 7, Cooling System for the procedure.
(9) Loosen, but do not remove, the coupler pinch
bolt and slide the coupler towards the pump (Fig. 5).
NOTE: There are 4 spacers located between the
engine block and the A/C compressor. The doweled
spacers are located in the front, undoweled in the
rear.
(10) Remove the (4) A/C compressor retaining bolts
(Fig. 5).
(11) Remove the compressor assembly from the
vehicle with H-Block attached.
CAUTION: Check the refrigerant oil level in the new
compressor prior to installation. See compressor oil
level in this group for a detailed procedure.
INSTALLATION
(1) Transfer the H-Block to the new compressor
and leave the bolts loose at this time.
(2) Lift the A/C compressor in position and install
the (4) spacers and retaining bolts (Fig. 6). Torque
the bolts to 33 N·m (25 ft. lbs.).
(3) Slide the drive coupler into its original position
and start the remaining (2) H-Block bolts (Fig. 6).
(4) Install the serpentine drive belt. See Group 7,
Cooling System for the procedure.
(5) Torque all H-Block retaining bolts to 33 N·m
(25 ft. lbs.).
(6) Lower the vehicle from the hoist.
(7) Install the suction and discharge refrigerant
lines on the compressor, making sure the o-rings are
well lubricated with refrigerant oil and free of tears.
(8) Connect the A/C compressor electrical connec-
tor (Fig. 6).
(9) Connect the negative battery cable.
(10) Charge the refrigerant system. See Refriger-
ant System Charge in this group for procedure.
Fig. 5 A/C Compressor Position & Orientation
1 – A/C COMPRESSOR MOUNTING BOLTS
2 – LEFT ENGINE MOUNT THROUGHBOLT NUT
3 – H BLOCK BOLTS
4 – COUPLER PINCH BOLT
5 – COMPRESSOR ELECTRICAL CONNECTOR
Fig. 6 A/C Compressor Position & Orientation
1 – A/C COMPRESSOR MOUNTING BOLTS
2 – LEFT ENGINE MOUNT THROUGHBOLT NUT
3 – H BLOCK BOLTS
4 – COUPLER PINCH BOLT
5 – COMPRESSOR ELECTRICAL CONNECTOR
XJ
HEATING AND AIR CONDITIONING
24 - 7
REMOVAL AND INSTALLATION (Continued)
2000 JEEP CHEROKEE
COMPRESSOR CLUTCH - 2.5L VM DIESEL
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the compressor from the vehicle. Refer
to the procedure in this group.
(3) Unscrew the compressor drive cup from the
clutch pulley.
(4) Insert the two pins of the spanner wrench
(Special Tool C-4489) into the holes of the clutch
plate. Hold the clutch plate stationary and remove
the hex nut (Fig. 7).
(5) Remove the clutch plate with a puller (Special
Tool C-6461) (Fig. 8).
(6) Remove the compressor shaft key and the
clutch shims.
(7) Remove the external front housing snap ring
with snap ring pliers (Fig. 9).
(8) Install the lip of the rotor puller (Special Tool
C-6141-1) into the snap ring groove exposed in the
previous step, and install the shaft protector (Special
Tool C-6141-2) (Fig. 10).
Fig. 7 Clutch Nut Remove
1 – CLUTCH PLATE
2 – SPANNER
Fig. 8 Clutch Plate Remove
1 – CLUTCH PLATE PULLER
2 – CLUTCH PLATE
Fig. 9 External Snap Ring Remove
1 – PULLEY
2 – SNAP RING PLIERS
Fig. 10 Shaft Protector and Puller
1 – PULLER JAW
2 – SHAFT PROTECTOR
24 - 8
HEATING AND AIR CONDITIONING
XJ
REMOVAL AND INSTALLATION (Continued)
2000 JEEP CHEROKEE
(9) Install the puller through-bolts (Special Tool
C-6461) through the puller flange and into the jaws
of the rotor puller and tighten (Fig. 11). Turn the
puller center bolt clockwise until the rotor pulley is
free.
(10) Remove the screw and retainer from the
clutch coil lead wire harness on the compressor front
housing (Fig. 12).
(11) Remove the snap ring from the compressor
hub and remove the clutch field coil (Fig. 13). Slide
the clutch field coil off of the compressor hub.
INSPECTION
Examine the friction surfaces of the clutch pulley
and the front plate for wear. The pulley and front
plate should be replaced if there is excessive wear or
scoring.
If the friction surfaces are oily, inspect the shaft
and nose area of the compressor for oil. Remove the
felt from the front cover. If the felt is saturated with
oil, the shaft seal is leaking and the compressor must
be replaced.
Check the clutch pulley bearing for roughness or
excessive leakage of grease. Replace the bearing, if
required.
INSTALLATION
(1) Install the clutch field coil and snap ring.
(2) Install the clutch coil lead wire harness retain-
ing clip on the compressor front housing and tighten
the retaining screw.
(3) Align the rotor assembly squarely on the front
compressor housing hub.
(4) Install the pulley bearing assembly with the
installer (Special Tool C-6871) (Fig. 14). Thread the
installer on the shaft, then turn the nut until the
pulley assembly is seated.
(5) Install the external front snap ring with snap
ring pliers. The bevel side of the snap ring must be
facing outward. Press the snap ring to make sure it
is properly seated in the groove.
Fig. 11 Install Puller Plate
1 – PULLER JAW
2 – PULLER
Fig. 12 Clutch Coil Lead Wire Harness
1 – COIL
2 – COIL WIRE
3 – RETAINER SCREW
Fig. 13 Clutch Field Coil Snap Ring Remove
1 – COIL
2 – SNAP RING PLIERS
XJ
HEATING AND AIR CONDITIONING
24 - 9
REMOVAL AND INSTALLATION (Continued)
2000 JEEP CHEROKEE
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст