Nissan Pathfinder (2010 year). Instruction — part 438
HA-38
< ON-VEHICLE REPAIR >
REFRIGERATION SYSTEM
Evacuating System and Charging Refrigerant
1.
Shut-off valve
2.
A/C service valve
3.
Recovery/recycling equipment
WJIA1160E
1.
Shut-off valve
2.
A/C service valve
3.
Recovery/recycling equipment
4.
Refrigerant container (HFC-134a)
5.
Refrigerant weight scale (J-39699)
6.
Vacuum pump (J-39649)
7.
Manifold gauge set with hoses and
couplers (J-39183-C)
WJIA1161E
2010 Pathfinder
COMPRESSOR
HA-39
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COMPRESSOR
Removal and Installation for Compressor
INFOID:0000000005256843
A/C Compressor Mounting - VK56DE
A/C Compressor Mounting - VQ40DE
AWIIA1291GB
LJIA0176E
2010 Pathfinder
HA-40
< ON-VEHICLE REPAIR >
COMPRESSOR
REMOVAL
1. Discharge the A/C refrigerant. Refer to
HA-37, "HFC-134a (R-134a) Service Procedure"
2. Remove the front left wheel and tire assembly. Refer to
.
3. Remove the engine cover.
4. Remove the front left mud guard.
5. Remove the front left splash shield.
6. Reposition the crankcase ventilation hose out of the way.
7. Remove the power steering cooler hose bracket bolt and reposition the hose out of the way (VK56DE
only).
8. Remove the engine air cleaner and air ducts. Refer to
EM-151, "Removal and Installation"
26, "Removal and Installation"
(VQ40DE).
9. Remove the drive belt. Refer to
EM-149, "Removal and Installation"
(VQ40DE).
10. Disconnect the compressor harness connector.
11. Disconnect both the front high-pressure flexible A/C hose and front low-pressure flexible A/C hose from
the compressor. Refer to
CAUTION:
Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
12. Remove the A/C compressor bolts using power tools.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-ring of the front low-pressure flexible A/C hose and front high-pressure flexible A/C
hose with a new one, apply compressor oil to the O-rings before installation.
• After recharging the A/C system with refrigerant, check for leaks. Refer to
.
Removal and Installation for Compressor Clutch
INFOID:0000000005532023
Magnet Clutch Assembly - VK56DE
1.
Compressor
2.
Front timing chain case
3.
Rear timing chain case
4.
Cylinder block
AWIIA1286GB
1.
Magnet clutch assembly
2.
Magnet coil
3.
Pulley
4.
Clutch disc
5.
Snap ring
6.
Thermal protector (built in)
7.
Compressor
2010 Pathfinder
COMPRESSOR
HA-41
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Magnet Clutch Assembly - VQ40DE
NOTE:
Illustrations for removal and installation are shown with the compressor out of the vehicle for clarity.
REMOVAL
1. For VQ40DE, remove the engine cooling fan. Refer to
CO-19, "Removal and Installation (Crankshaft
2. For VK56DE, remove the compressor. Refer to
HA-39, "Removal and Installation for Compressor"
.
3. Remove the center bolt while holding the clutch disc stationary
using Tool as shown.
4. Remove the clutch disc and shims.
CAUTION:
Retain shims for installation.
5. Remove the snap ring using a suitable tool.
AWIIA1284GB
1.
Magnet clutch assembly
2.
Magnet coil
3.
Pulley
4.
Clutch disc
5.
Snap ring
6.
Thermal protector (built in)
7.
Compressor
Tool number
: J-44614
WHA228
RHA072C
2010 Pathfinder
HA-42
< ON-VEHICLE REPAIR >
COMPRESSOR
6. Remove the pulley using a suitable tool (A).
CAUTION:
To prevent deformation of the pulley groove, the puller
claws should be hooked under the pulley groove and not
into the pulley groove.
7. Remove the magnet coil.
• For the VK56DE engine, using a suitable tool remove the
three magnet coil screws and remove the magnet coil.
• For the VQ40DE engine, remove the magnet coil snap ring (A)
using a suitable tool and remove the magnet coil (1).
INSPECTION
Clutch Disc
If the contact surface shows signs of damage due to excessive heat, replace clutch disc and pulley.
Pulley
Check the appearance of the pulley assembly. If contact surface 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.
Coil
Check magnet coil for loose connections or any cracked insulation. Replace as necessary.
INSTALLATION
1. Install the magnet coil.
AWIIA1285ZZ
WHA212
ALIIA0379ZZ
2010 Pathfinder
COMPRESSOR
HA-43
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• For the VK56DE engine, position the magnet coil and, using a
suitable tool, install the three magnet coil screws.
• For the VQ40DE engine, position the magnet coil (1) and
install the magnet coil snap ring (A) using a suitable tool.
CAUTION:
Be sure to align the magnet coil pin with the hole in the
compressor front head.
2. Install the pulley assembly using Tool and a wrench, then install
the snap ring using a suitable tool.
3. Install the clutch disc on the compressor shaft, together with the
original shim(s) using a suitable tool. Press the clutch disc in by
hand.
4. Install the clutch pulley bolt while using Tool to prevent the clutch
disc from turning and tighten the bolt to specification.
CAUTION:
After tightening the clutch pulley bolt, check that the clutch
pulley rotates smoothly.
WHA212
ALIIA0379ZZ
Tool number
: — (J-38873-A)
WJIA1016E
WHA184
Tool number
: J-44614
WHA229
2010 Pathfinder
HA-44
< ON-VEHICLE REPAIR >
COMPRESSOR
5. Check the pulley clearance all the way around the clutch disc as
shown.
6. If the specified clearance is not obtained, replace the adjusting
spacer to readjust.
7. For VK56DE, install the compressor. Refer to
HA-39, "Removal and Installation for Compressor"
.
8. For VQ40DE, install the engine cooling fan. Refer to
CO-19, "Removal and Installation (Crankshaft driven
BREAK-IN OPERATION
When replacing compressor clutch assembly, always conduct the break-in operation. This is done by engag-
ing and disengaging the clutch about 30 times. Break-in operation raises the level of transmitted torque.
Clutch disc-to-pulley clearance
: 0.3 - 0.6 mm
(0.012 - 0.024 in)
WHA194
2010 Pathfinder
HIGH-PRESSURE FLEXIBLE HOSE
HA-45
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HIGH-PRESSURE FLEXIBLE HOSE
Removal and Installation for Front High-pressure Flexible A/C Hose
INFOID:0000000005256845
REMOVAL
1. Remove the front left wheel and tire assembly. Refer to
.
2. Remove the front left mud guard.
3. Remove the front left splash shield.
4. Discharge the refrigerant. Refer to
HA-37, "HFC-134a (R-134a) Service Procedure"
.
5. Remove the front high-pressure flexible A/C hose. Refer to
.
CAUTION:
Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-ring of the front high-pressure flexible A/C hose with a new one, then apply compres-
sor oil to it for installation.
• After charging refrigerant, check for leaks.
2010 Pathfinder
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