Nissan Quest E52. Manual - part 710

COMPRESSOR

HA-31

< REMOVAL AND INSTALLATION >

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COMPRESSOR : Removal and Installation

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CAUTION:

Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to 

HA-

22, "Perform Lubricant Return Operation"

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REMOVAL

1.

Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to 

HA-20, "Recy-

cle Refrigerant"

.

2.

Remove engine under cover. Refer to 

EXT-28, "Removal and Installation"

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3.

Remove splash guard RH. Refer to 

EXT-23, "Removal and Installation"

.

4.

Remove drive belt. Refer to 

EM-13, "Removal and Installation"

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5.

Remove mounting bolts (A), and then disconnect low-pressure
flexible hose (1) and high-pressure flexible hose (2) from com-
pressor (3).

CAUTION:

• Plug low-pressure port and high-pressure port of com-

pressor to prevent compressor oil leakage.

• Cap of wrap the joint of the low-pressure flexible hose,

high-pressure flexible hose, and compressor with suitable
material such as vinyl tape to avoid the entry of air.

6.

Disconnect magnet clutch harness connector (A), and then
remove harness fixing clip (B) from compressor.

7.

Remove return tube fixing clamps, and then move return tube to secure work space. Refer to 

ST-35,

"Exploded View"

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8.

Remove compressor mounting bolts, and then remove compressor from the right side of the vehicle.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• Tighten compressor mounting bolts in numerical order as

shown in the figure.

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check tension of the drive belt after installing compressor. Refer to 

EM-14, "Checking"

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: Vehicle front

JMIIA1189ZZ

JPIIA0530ZZ

JMIIA1813ZZ

HA-32

< REMOVAL AND INSTALLATION >

COMPRESSOR

• Check for leakages when recharging refrigerant. Refer to 

HA-18, "Leak Test"

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• Perform lubricant adjusting procedure before installing new compressor. Refer to 

HA-23, "Lubricant

Adjusting Procedure for Compressor Replacement"

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MAGNET CLUTCH

MAGNET CLUTCH : Removal and Installation of Compressor Clutch

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REMOVAL

1.

Fix clutch disc.

2.

Remove center bolt, and then remove clutch disc.

3.

Remove snap ring using external snap ring pliers.

4.

Position center pulley puller on the end of the drive shaft, and remove pulley assembly using any commer-
cially available pulley puller.
To prevent pulley groove from being deformed, puller claws should be positioned into the edge of the pul-
ley assembly.

5.

Disconnect  field coil harness from compressor unit.

6.

Remove screw, and then remove field coil.

INSTALLATION

1.

Install field coil (1).
Be sure to align the coil’s pin (2) with the hole in the compres-
sor’s front head.

2.

Connect field coil harness to compressor unit.

3.

Install pulley assembly (1) using installer (SST: J-41260) (A) and
a hand press, and then install snap ring (2) using snap ring pli-
ers.

4.

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

5.

Using holder to prevent clutch disc rotation.
After tightening the bolt, check that the pulley rotates smoothly.

Break-in Operation

When replacing compressor clutch assembly, always carry out the break-in operation. This is done by engag-
ing and disengaging the clutch about thirty-times. Break-in operation raises the level of transmitted torque.

Inspection

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CHECK DISC TO PULLEY CLEARANCE

JMIIA0575ZZ

JMIIA0576ZZ

COMPRESSOR

HA-33

< REMOVAL AND INSTALLATION >

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Check the clearance (B) between pulley assembly (1) and clutch
disc (2) along the entire periphery with a feeler gauge (A).

CAUTION:

Replace compressor if the specified clearance is not obtained,
replace adjusting spacer and readjust.

Clearance

: Refer to 

HA-61, "Compressor"

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SJIA1918E

HA-34

< REMOVAL AND INSTALLATION >

COOLER PIPE AND HOSE

COOLER PIPE AND HOSE

Exploded View

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FRONT

JMIIA1814GB

1.

Front cooler pipe assembly

2.

O-ring

3.

High-pressure pipe

4.

High-pressure flexible hose

5.

Condenser

6.

Compressor

7.

Low-pressure flexible hose

8.

Heater hose

9.

Clamp

10. Heater pipe

11.

Rear heater inlet tube

12. Drain cock

13. Drain cock packing

14. Front cooler pipe bracket

15. Rear heater outlet tube

16. Heater & cooling unit assembly

A.

To rear cooler cycle

B.

To rear heater cycle

C.

To heater outlet

D.

To heater inlet

: Always replace after every disassembly.

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)