Nissan March K13. Manual - part 363

COMPRESSOR

HA-31

< REMOVAL AND INSTALLATION >

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COMPRESSOR : Removal and Installation

INFOID:0000000006032330

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"

.

REMOVAL

1.

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

HA-20, "Recy-

cle Refrigerant"

.

2.

Remove mounting bolts, and then disconnect low-pressure flexible hose and high-pressure flexible hose
from the compressor.

CAUTION:

Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
avoid the entry of air.

3.

Remove drive belt. Refer to 

EM-19, "Removal and Installation"

.

4.

Disconnect compressor (magnet clutch) connector.

5.

Remove mounting bolts, and then remove compressor form the vehicle.

INSTALLATION

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

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure before installing new compressor. Refer to 

HA-23, "Lubricant

Adjusting Procedure for Compressor Replacement"

.

• Check for leakages when recharging refrigerant. Refer to 

HA-18, "Leak Test"

.

• Check tension of the drive belt after installing compressor. Refer to 

EM-18, "Checking"

.

MAGNET CLUTCH

MAGNET CLUTCH : Removal and Installation of Compressor Clutch

INFOID:0000000006057762

REMOVAL

Overhaul

1.

When removing center bolt, hold clutch disc with clutch disc
wrench (SST:KV99232340) (A).

2.

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 harness connector from compressor unit.

6.

Remove snap ring using external snap ring pliers, and then remove field coil.

INSTALLATION

1.

Install field coil (1).

JMIIA0574ZZ

HA-32

< REMOVAL AND INSTALLATION >

COMPRESSOR

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

2.

Install field coil harness clip.

3.

Install pulley assembly (1) using pulley installer
(SST:KV99106200) (A) and a hand press, and then install snap
ring (2) using snap ring pliers.

4.

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

5.

Tighten center bolt to the specified torque while fixing clutch disc
not to rotate using a clutch disc wrench (SST:KV99232340).
After tightening the bolt, check that the pulley rotates smoothly.

Break-in Operation

When replacing compressor clutch assembly, always perform the break-in operation, by engaging and disen-
gaging the clutch approximately 30-times. Break-in operation increases the level of transmitted torque.

Inspection

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CHECK DISC TO PULLEY CLEARANCE

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

Replace compressor if specified clearance is not obtained.

JMIIA0575ZZ

JMIIA0576ZZ

JMIIA0577ZZ

Clearance

: Refer to 

HA-45, "Compressor"

.

JPIIA1566ZZ

COOLER PIPE AND HOSE

HA-33

< REMOVAL AND INSTALLATION >

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COOLER PIPE AND HOSE

Exploded View

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HIGH-PRESSURE FLEXIBLE HOSE

HIGH-PRESSURE FLEXIBLE HOSE : 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"

.

REMOVAL

1.

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

HA-20, "Recy-

cle Refrigerant"

.

2.

Remove mounting bolt, and then disconnect high-pressure flexible hose from the condenser.

CAUTION:

Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.

3.

Remove mounting bolt, and then disconnect high-pressure flexible hose from the compressor.

CAUTION:

1.

A/C unit assembly

2.

O-ring

3.

High-pressure pipe

4.

O-ring

5.

Condenser

6.

Compressor

7.

O-ring

8.

Low-pressure flexible hose

9.

O-ring

10. High-pressure flexible hose

11.

O-ring

12. O-ring

Refer to 

GI-4, "Components"

 for symbols in the figure.

JMIIA0590GB

HA-34

< REMOVAL AND INSTALLATION >

COOLER PIPE AND HOSE

Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
avoid the entry of air.

4.

Remove high-pressure flexible hose from the vehicle.

INSTALLATION

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

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to 

HA-18, "Leak Test"

.

LOW-PRESSURE FLEXIBLE HOSE

LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation

INFOID:0000000006032334

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"

.

REMOVAL

1.

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

HA-20, "Recy-

cle Refrigerant"

.

2.

Remove the mounting bolt and nut installed in low-pressure flexible hose from the vehicle.

3.

Remove mounting bolt, and then disconnect low-pressure flexible hose from expansion valve.

CAUTION:

Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.

4.

Remove mounting bolt, and then disconnect low-pressure flexible hose from the compressor.

CAUTION:

Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
avoid the entry of air.

5.

Remove low-pressure flexible hose from the vehicle.

INSTALLATION

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

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to 

HA-18, "Leak Test"

.

HIGH-PRESSURE PIPE

HIGH-PRESSURE PIPE : Removal and Installation

INFOID:0000000006032335

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"

.

REMOVAL

1.

Remove low-pressure flexible hose. Refer to 

HA-34, "LOW-PRESSURE FLEXIBLE HOSE : Removal and

Installation"

.

2.

Remove ground cable form the engine assembly.

3.

Disconnect high-pressure pipe from expansion valve.

CAUTION:

Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.

4.

Remove mounting bolt, and then disconnect high-pressure pipe from the condenser.

CAUTION:

Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.