Automatic Air Conditioner: Removal & Installation Nissan Altima L31

Lubricant Adjusting Procedure for Components Replacement Except Compressor

After replacing any of the following major components, add the correct amount of lubricant to the system.

Amount of lubricant to be added

Scheme 152

Lubricant Adjustment Procedure for Compressor Replacement

1. Before connecting ACR4 to vehicle, check ACR4 gauges. No refrigerant pressure should be displayed. If OK, recover refrigerant from equipment lines.
2. Confirm refrigerant purity in supply tank using ACR4 and refrigerant identifier. If NG, refer to «CONTAMINATED REFRIGERANT»(ref-206580-S21831056262005112500000) .
3. Connect ACR4 to vehicle. Confirm refrigerant purity in vehicle A/C system using ACR4 and refrigerant identifier. If NG, refer to «CONTAMINATED REFRIGERANT»(ref-206580-S21831056262005112500000) .
4. Discharge refrigerant into the refrigerant recovery/recycling equipment. Measure lubricant discharged into the recovery/recycling equipment.
5. Drain the lubricant from the "old" (removed) compressor into a graduated container and recover the amount of lubricant drained.
6. Drain the lubricant from the "new" compressor into a separate, clean container.
7. Measure an amount of new lubricant installed equal to amount drained from "old" compressor. Add this lubricant to "new" compressor through the suction port opening.
8. Measure an amount of new lubricant equal to the amount recovered during discharging. Add this lubricant to "new" compressor through the suction port opening.
9. If the liquid tank also needs to be replaced, add an additional 5 m l (0.2 US fl oz, 0.2 lmp fl oz) of lubricant at this time. Do not add this 5 m l (0.2 US fl oz, 0.2 lmp fl oz) of lubricant if only replacing the compressor.

Scheme 153

INSTALLATION

Install in the reverse order of removal.

Note. When filling radiator with coolant. Refer to HFC-134A (R-134A) SERVICE PROCEDURE .

Scheme 154

Scheme 155

Scheme 156

1. Remove heater and cooling unit. Refer to «HEATER & COOLING UNIT ASSEMBLY»(ref-206580-S09451976382005112500000) .
2. Remove heater core pipe support screws and then remove it.
3. Remove heater core cover screws and then remove it.
4. Remove heater core.

Scheme 157

1. Remove the driver lower instrument panel assembly. Refer to «INSTRUMENT PANEL ASSEMBLY»(ref-152591-S31772112822003022400000) .
2. Disconnect the mode door motor connector.
3. Remove the mode door motor screws and then remove it.

Scheme 158

1. Remove the driver lower instrument panel assembly. Refer to «INSTRUMENT PANEL ASSEMBLY»(ref-152591-S31772112822003022400000) .
2. Disconnect the air mix door motor connector.
3. Remove the air mix door motor screws and then remove it.

Scheme 159

1. Disconnect fan control amp. connector
2. Remove screws from the fan control amp. and then remove it.

Scheme 160

Scheme 161

1. Remove cluster lid D. Refer to «INSTRUMENT PANEL ASSEMBLY»(ref-152591-S31772112822003022400000) .
2. Release the tabs to remove center ventilator grille.

Scheme 162

1. Remove cluster lid A. Refer to «INSTRUMENT PANEL ASSEMBLY»(ref-152591-S31772112822003022400000) .
2. Remove side ventilator grille LH.

Scheme 163

1. Remove glove box assembly. Refer to «INSTRUMENT PANEL ASSEMBLY»(ref-152591-S31772112822003022400000) .
2. Remove side ventilator grille RH screw and then remove it.

Scheme 164

1. Remove the carpet.
2. Release foam tape and slide floor duct rearward to release from clips.

REMOVAL

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-206580-S14035544632005112500000) .
2. Remove the drive belt. Refer to «VQ35DE»(ref-183494-S40607294242005090900000) .
3. Remove the coolant pipe bracket bolt.
4. Remove compressor mounting stud.
5. Disconnect the compressor connector.
6. Remove the high-pressure flexible hose and low-pressure flexible hose. CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
7. Remove the mounting bolts and nut from compressor using power tools.

Scheme 165

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Scheme 167

Scheme 168

1. When removing center bolt, hold clutch disc with clutch disc tool.
2. Remove the clutch disc. Clutch disc holding tool: (J-44614) Commercial service tool
3. Remove the snap ring using external snap ring pliers.
4. Pulley removal: Use a pulley puller with small adapter. Position the small adapter on the end of the drive shaft and the center of the puller on the small adapter. Remove the pulley assembly with the puller. To prevent deformation of the pulley groove, the puller claws should be hooked under (not into) the pulley groove.
5. Remove the snap ring using external snap ring pliers.
6. Remove the magnet coil harness clip using a screwdriver, remove the three magnet coil fixing screws and remove the magnet coil.

Scheme 169

If the contact surface shows signs of damage due to excessive heat, replace clutch disc and pulley.

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-206580-S14035544632005112500000) . CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
2. Remove the low-pressure flexible hose. Refer to «COMPONENTS»(ref-206580-S14008217572005112500000) .

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-206580-S14035544632005112500000) .
2. Remove the high-pressure flexible hose. Refer to «COMPONENTS»(ref-206580-S14008217572005112500000) . CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-206580-S14035544632005112500000) .
2. Remove the high-pressure pipe. Refer to «COMPONENTS»(ref-206580-S14008217572005112500000) . CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

Scheme 170

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-206580-S14035544632005112500000) .
2. Disconnect the refrigerant pressure sensor connector and remove the refrigerant pressure sensor from condenser. CAUTION: Please be careful not to damage the condenser fins. Apply compressor oil to the O-ring of the refrigerant pressure sensor when installing it. Tightening torque: 9.8 - 11.7 N.m (1.0 - 1.2 kg-m, 7.3 - 8.6 ft-lb)

Scheme 171

Scheme 172

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-206580-S14035544632005112500000) .
2. Remove the radiator. Refer to «RADIATOR»(ref-183495-S00177931992005081400000) . CAUTION: Be careful not to damage the core surface of the condenser and the radiator.
3. Disconnect the high-pressure flexible hose and the high-pressure pipe from the condenser. CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
4. Disconnect the refrigerant pressure sensor connector.
5. Remove the front fascia.
6. Remove the mounting nuts from condenser mounting brackets.

Scheme 173

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-206580-S14035544632005112500000) .
2. Remove the battery.
3. Remove the hood switch (if equipped).
4. Remove the engine undercover using power tools.
5. Remove the bolt and line clamp.
6. Loosen the tank clamp and remove the liquid tank.

Scheme 174

Scheme 175

Scheme 176

Scheme 177

1. Remove the heater and cooling unit. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-206580-S14035544632005112500000) .
2. Remove the heater core cover.
3. Remove the evaporator cover.
4. Remove the evaporator pipes.
5. Remove the evaporator.

Scheme 178

1. Discharge the refrigerant. Refer to , " «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-206580-S14035544632005112500000) ".
2. Disconnect the refrigerant lines from the cooler unit. CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
3. Remove the cooler grommet.
4. Remove the expansion valve. Expansion valve mounting bolts Tightening torque: 2.9 - 5.0 N.m (0.29 - 0.51 kg-m, 26 - 44 in-lb)