Nissan Pathfinder (2010 year). Manual - part 438

 

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Nissan Pathfinder (2010 year). Manual - 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 

WT-49, "Rotation"

.

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"

 (VK56DE), 

EM-

26, "Removal and Installation"

 (VQ40DE).

9. Remove the drive belt. Refer to 

EM-149, "Removal and Installation"

 (VK56DE), 

EM-26, "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 

HA-34, "Component"

.

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 

HA-29, "Checking of

Refrigerant Leaks"

.

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

driven type)"

.

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

< ON-VEHICLE REPAIR >

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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

type)"

.

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 

WT-49, "Rotation"

.

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 

HA-34, "Component"

.

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.

Refer to 

HA-34, "Component"

.

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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