Nissan Pathfinder (2009 year). Manual - part 448

 

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Nissan Pathfinder (2009 year). Manual - part 448

 

 

HA-38

< ON-VEHICLE REPAIR >

REFRIGERATION SYSTEM

WARNING:

Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Remove HFC-134a (R-134a) refrigerant from the A/C system using certified service equipment meeting
requirements of SAE J2210 HFC-134a (R-134a) recycling equipment or SAE J2201 HFC-134a (R-134a)
recovery equipment. If an accidental system discharge occurs, ventilate the work area before resum-
ing service. Additional health and safety information may be obtained from the refrigerant and oil man-
ufacturers.

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

2009 Pathfinder

REFRIGERATION SYSTEM

HA-39

< ON-VEHICLE REPAIR >

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*1

 

HAC-21, "CONSULT-III Function 

(HVAC)"

.

*3

HA-29, "Checking of Refrigerant 
Leaks"

.

*5

HA-4, "Contaminated Refrigerant"

.

*2

HA-29, "Checking of Refrigerant 
Leaks"

.

*4

HAC-21, "CONSULT-III Function 
(HVAC)"

.

WJIA1923E

2009 Pathfinder

HA-40

< ON-VEHICLE REPAIR >

COMPRESSOR

COMPRESSOR

Removal and Installation for Compressor

INFOID:0000000003935715

A/C Compressor Mounting - VK56DE

A/C Compressor Mounting - VQ40DE

WJIA0958E

LJIA0176E

2009 Pathfinder

COMPRESSOR

HA-41

< ON-VEHICLE REPAIR >

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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-48, "Rotation"

.

3.

Remove the engine cover.

4.

Remove the front left mud guard.

5.

Remove the front left splash shield.

6.

Remove the power steering cooler hose bracket bolt and reposition the hose out of the way (VK56DE
only).

7.

Remove the engine air cleaner and air ducts. Refer to 

EM-157, "Removal and Installation"

 (VK56DE), 

EM-

25, "Removal and Installation"

 (VQ40DE).

8.

Remove the drive belt. Refer to 

EM-155, "Removal and Installation"

 (VK56DE), 

EM-25, "Removal and

Installation"

 (VQ40DE).

9.

Disconnect the compressor harness connector.

10. Disconnect both the front high-pressure flexible A/C hose and front low-pressure flexible A/C hose from

the compressor.

CAUTION:

Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air. 

11. 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:0000000003935716

Magnet Clutch Assembly - VK56DE

1.

Compressor

2.

Front timing chain case

3.

Rear timing chain case

4.

Cylinder block

WJIA0372E

1.

Magnet clutch assembly

2.

Magnet coil

3.

Pulley

4.

Clutch disc

5.

Snap ring

6.

Thermal protector (built in)

7.

Compressor

2009 Pathfinder

HA-42

< ON-VEHICLE REPAIR >

COMPRESSOR

Magnet Clutch Assembly - VQ40DE

REMOVAL

1.

Remove the compressor. Refer to 

HA-40, "Removal and Installation for Compressor"

.

2.

Remove the center bolt while holding the clutch disc stationary
using Tool as shown.

3.

Remove the clutch disc.

4.

Remove the snap ring using external snap ring pliers or suitable
tool.

WJIA1162E

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

2009 Pathfinder

COMPRESSOR

HA-43

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5.

Remove the pulley using Tool with a small adapter. Position the
small adapter on the end of the drive shaft and the center of the
puller on the small adapter.

CAUTION:

To prevent deformation of the pulley groove, the puller
claws should be hooked under the pulley groove and not
into the pulley groove.

6.

Remove the magnet coil harness clip using a screwdriver,
remove the three magnet coil fixing screws and remove the
magnet coil.

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.

INSTALLATION

1.

Install the magnet coil.

CAUTION:

Be sure to align the magnet coil pin with the hole in the
compressor front head.

2.

Install the magnet coil harness clip using a screwdriver.

Tool number

: KV99233130 (J-29884)

WJIA1017E

WHA212

WHA183

WHA213

2009 Pathfinder

HA-44

< ON-VEHICLE REPAIR >

COMPRESSOR

3.

Install the pulley assembly using Tool and a wrench, then install
the snap ring using snap ring pliers.

4.

Install the clutch disc on the compressor shaft, together with the
original shim(s). Press the clutch disc down by hand.

5.

Install the clutch pulley bolt using Tool, to prevent the clutch disc
from turning and tighten the bolt to specification. Refer to 

HA-34,

"Component"

.

CAUTION:

After tightening the clutch pulley bolt, check that the clutch
pulley rotates smoothly.

6.

Check the pulley clearance all the way around the clutch disc as
shown.

7.

If the specified clearance is not obtained, replace the adjusting
spacer to readjust.

8.

Install the compressor. Refer to 

HA-40, "Removal and Installa-

tion for Compressor"

.

Tool number

:

—

(J-38873-A)

WJIA1016E

WHA184

Tool number

: J-44614

WHA229

Clutch disc-to-pulley clearance

: 0.3 - 0.6 mm 
(0.012 - 0.024 in)

WHA194

2009 Pathfinder

COMPRESSOR

HA-45

< ON-VEHICLE REPAIR >

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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.

2009 Pathfinder

 

 

 

 

 

 

 

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