Automatic Air Conditioner: Removal & Installation Infiniti M45 II

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 95

Scheme 96

1. Before connecting ACR4 to vehicle, check ACR4 gauges. No refrigerant pressure should be displayed. If NG, recover refrigerant from equipment lines.
2. Connect ACR4 to vehicle. Confirm refrigerant purity in supply tank using ACR4 and refrigerant identifier. If NG, refer to " «CONTAMINATED REFRIGERANT»(ref-181236-S13049927962005080100000) ".
3. Confirm refrigerant purity in vehicle A/C system using ACR4 and refrigerant identifier. If NG, refer to " «CONTAMINATED REFRIGERANT»(ref-181236-S13049927962005080100000) ".
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 Imp fl oz) of lubricant at this time. Do not add this 5 m l (0.2 US fl oz, 0.2 Imp fl oz) of lubricant if only replacing the compressor.

REMOVAL

Refer to "Removal and Installation ".

INSTALLATION

Installation is basically the reverse order of removal.

Scheme 97

1. Remove front grille. Refer to "FRONT GRILLE ".
2. Disconnect ambient sensor connector, then remove it.

Installation is basically the reverse order of removal.

Scheme 98

1. Remove instrument lower driver panel. Refer to "Removal and Installation ".
2. Disconnect in-vehicle sensor connector and aspirator duct.
3. Remove in-vehicle sensor.

Installation is basically the reverse order of removal.

Scheme 99

1. Remove front defroster grille (left-hand side).
2. Disconnect sunload sensor connector, then remove it.

Installation is basically the reverse order of removal.

Scheme 100

1. Remove heater & cooling unit. Refer to " «HEATER & COOLING UNIT ASSEMBLY»(ref-181236-S03218377882005080100000) ".
2. Remove evaporator from heater & cooling unit.
3. Separate heater & cooling unit case.
4. Remove intake sensor.

Installation is basically the reverse order of removal.

Scheme 101

1. Remove glove box assembly. Refer to "Removal and Installation ".
2. Remove glove box cover, instrument lower assistant panel and instrument reinforcement. Refer to "Removal and Installation ".
3. Remove ECM and CD auto changer (If equipped). Refer to "REMOVAL AND INSTALLATION OF CD AUTO CHANGER ".
4. Disconnect blower motor connector, intake door motor connector and auto amp. connector.
5. Remove the screws from blower unit, then remove it.

Installation is basically the reverse order of removal.

Note. When attaching the blower unit, the work will be easier if the blower motor is removed first.

Scheme 102

Scheme 103

1. Remove the glove box, glove box cover and instrument lower cover. Refer to "Removal and Installation "
2. Disconnect blower motor connector.
3. Remove the screws from blower motor, then remove it.

Installation is basically the reverse order of removal.

Scheme 104

1. Remove ECM, instrument lower assistant cover and instrument reinforcement. Refer to "Removal and Installation ".
2. Remove the intake door motor from the blower unit.

Installation is basically the reverse order of removal.

REPLACEMENT TIMING

Replace in-cabin microfilter.

Refer to "CHASSIS AND BODY MAINTENANCE " in SCHEDULE 1 and "CHASSIS AND BODY MAINTENANCE " in SCHEDULE 2.

Caution label is fixed inside glove box.

Scheme 105

1. Remove glove box. Refer to "Removal and Installation ".
2. Remove center cover of glove box cover. Refer to "Removal and Installation ".
3. Remove filter cover.
4. Take out the in-cabin microfilter from blower unit.
5. Replace with new one and reinstall on blower unit.
6. Reinstall the glove box.

Scheme 106

Scheme 107

Scheme 108

Scheme 109

1. Use a refrigerant collecting equipment (for HFC-134a) to discharge refrigerant.
2. Remove engine cover. Refer to "ENGINE ROOM COVER ".
3. Remove tower bar. Refer to "FRONT SUSPENSION ASSEMBLY ".
4. Drain coolant from cooling system. Refer to "Changing Engine Coolant ".
5. Disconnect two heater hoses from heater core pipe.
6. Disconnect low-pressure flexible hose and high-pressure pipe from evaporator.
7. Remove the instrument panel. Refer to "Removal and Installation ".
8. Remove the blower unit. Refer to " «BLOWER UNIT»(ref-181236-S14532167632005080100000) ".
9. Remove clips of vehicle harness from steering member.
10. Remove the instrument stays (driver side, passenger side).
11. Remove the defroster nozzle and ventilator ducts.
12. Remove the screws from heater & cooling unit.
13. Remove the heater & cooling unit.

Installation is basically the reverse order of removal.

Scheme 110

Scheme 111

1. Remove instrument panel. Refer to "Removal and Installation ".
2. Disconnect mode door motor connector.
3. Remove mode door motor.

Scheme 112

1. Remove blower unit. Refer to " «BLOWER UNIT»(ref-181236-S14532167632005080100000) ".
2. Disconnect mode door motor connector.
3. Remove mode door motor.

Installation is basically the reverse order of removal.

Scheme 113

1. Remove instrument lower driver panel. Refer to "Removal and Installation ".
2. Remove air mix door rod from rod holder.
3. Disconnect air mix door motor connector.
4. Remove air mix door motor.

Scheme 114

1. Remove blower unit. Refer to " «BLOWER UNIT»(ref-181236-S14532167632005080100000) ".
2. Remove air mix door rod from rod holder.
3. Disconnect air mix door motor connector.
4. Remove air mix door motor.

Installation is basically the reverse order of removal.

Scheme 115

Scheme 116

1. Remove cluster lid C. Refer to "Removal and Installation "
2. Remove center ventilator grille.

Scheme 117

1. Remove instrument lower driver panel. Refer to "Removal and Installation ".
2. Remove side ventilator grille (left).
3. Remove glove box cover. Refer to "Removal and Installation ".
4. Remove side ventilator grille (right).

Installation is basically the reverse order of removal.

Installation is basically the reverse order of removal.

Scheme 118

Scheme 119

Scheme 120

Scheme 121

Scheme 122

Scheme 123

Scheme 124

1. When removing center bolt, hold clutch disc with a wrench.
2. Remove clutch disc using the clutch disc puller.
3. Remove snap ring using external snap ring pliers.
4. Position center pulley puller on the end of the driveshaft, and remove pulley assembly using any commercially available pulley puller. To prevent the pulley groove from being deformed, the puller claws should be positioned at the edge of the pulley assembly.
5. Remove field coil harness clip using a pair of pliers.
6. Remove snap ring using external snap ring pliers.

Installation is basically the reverse order of removal.

1. Remove engine cover. Refer to "ENGINE ROOM COVER ".
2. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3. Remove air cleaner assembly, air duct and air inlet pipe. Refer to "AIR CLEANER AND AIR DUCT ".
4. Remove mounting bolt and nut from the high-pressure flexible hose, then remove it.

Scheme 125

Installation is basically the reverse order of removal.

1. Remove engine cover. Refer to "ENGINE ROOM COVER ".
2. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3. Drain coolant from cooling system and disconnect heater hoses. Refer to "Changing Engine Coolant ".
4. Remove low-pressure flexible hose. Refer to " «LOW-PRESSURE FLEXIBLE HOSE»(ref-181236-S29600064842005080100000) ".
5. Remove high-pressure flexible hose. Refer to " «HIGH-PRESSURE FLEXIBLE HOSE»(ref-181236-S18083326932005080100000) ".
6. Remove high-pressure pipe.

Installation is basically the reverse order of removal.

1. Use a refrigerant collecting equipment (for HFC-134a) to discharge refrigerant.
2. Remove front grille. Refer to "FRONT GRILLE ".
3. Disconnect refrigerant pressure sensor connector, then remove refrigerant pressure sensor.

Installation is basically the reverse order of removal.

Scheme 126

Scheme 127

Scheme 128

1. Remove engine cover and front grille. Refer to "ENGINE ROOM COVER " and "FRONT GRILLE ".
2. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3. Remove tower bar, air cleaner assembly, air duct and air inlet pipe. Refer to "FRONT SUSPENSION ASSEMBLY " and "AIR CLEANER AND AIR DUCT ".
4. Disconnect high-pressure flexible hose and high-pressure pipe from the condenser.
5. Remove oil cooler pipe clips from left side of the condenser.
6. Remove oil cooler from the condenser.
7. Remove battery, battery tray and radiator mounting bracket. Refer to "BATTERY ".
8. Remove cooling fan shroud. Refer to "REMOVAL AND INSTALLATION ".
9. Remove mounting bolts from condenser.
10. Slide condenser up and remove it from the radiator clip.
11. Remove radiator from the lower mount, move it to the engine side, then remove condenser between the radiator and the radiator core support.

Installation is basically the reverse order of removal.

Scheme 129

Scheme 130

1. Use a refrigerant collecting equipment (for HFC-134a) to discharge refrigerant.
2. Remove front grille. Refer to "FRONT GRILLE ".
3. Unscrew, and remove the pipe securing bracket.
4. Unscrew liquid tank securing band.
5. Pull out the liquid tank and liquid tank securing band through the top.

Installation is basically the reverse order of removal.

Scheme 131

1. Remove engine cover. Refer to "ENGINE ROOM COVER ".
2. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3. Drain coolant from cooling system and disconnect heater hoses. Refer to "Changing Engine Coolant ".
4. Disconnect low-pressure flexible hose and high-pressure pipe from the evaporator.
5. Remove heater & cooling unit. Refer to " «HEATER & COOLING UNIT ASSEMBLY»(ref-181236-S03218377882005080100000) ".
6. Remove cooler grommet, expansion valve cover and expansion valve.
7. Remove air mix door motor and mode door motor bracket.
8. Remove evaporator cover.
9. Slide the evaporator, then remove it from the heater & cooling unit assembly.
10. Remove intake sensor from the evaporator, then remove evaporator.

Installation is basically the reverse order of removal.

Scheme 132

Scheme 133

Scheme 134

1. Remove engine cover. Refer to "ENGINE ROOM COVER ".
2. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3. Drain coolant from cooling system and disconnect heater hoses. Refer to "Changing Engine Coolant ".
4. Disconnect low-pressure flexible hose and high-pressure pipe from the evaporator.
5. Remove high-pressure pipe from clip.
6. Remove expansion valve cover.
7. Remove expansion valve.

Installation is basically the reverse order of removal.