Removal And Installation

A/C UNIT ASSEMBLY

A/C UNIT ASSEMBLY : Removal and Installation


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 HA34, "Perform Lubricant Return Operation"

REMOVAL

1.Use the refrigerant recovery equipment (for HFC134a) and recover the refrigerant. Refer to "Recycle Refrigerant" Recycle Refrigerant.
2.Drain out heater fluid. Refer to "Draining and Refilling" Draining And Refilling.
3.Remove cowl top extension. Refer to "Removal and Installation" Removal And Installation.





4.Remove mounting bolt (A), and then disconnect low-pressure flexible hose (1) and high-pressure pipe (2) from expansion valve.

CAUTION:
To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the connection ports of the pipe and expansion valve from the atmosphere.





5.Remove fixing clamps, and then disconnect heater hoses (1).
6.Remove instrument panel assembly. Refer to "Removal and Installation" Removal And Installation.
7.Remove side ventilator duct. Refer to "SIDE VENTILATOR DUCT : Removal and Installation" Side Ventilator Duct.





8.Disconnect drain hose (1).





9.Remove mounting nuts (A), and then remove instrument stay (1).





10.Remove fixing screws (A), and then remove fuse box (J/B) (1).
11.Remove mounting bolts (A) of ground wire from steering member.





12.Remove all of harness connectors and mounting nuts necessary to allow steering column assembly to be moved. Refer to "Exploded View" With Heated Steering Wheel (With heated steering wheel) or "Exploded View" Without Heated Steering Wheel (Without heated steering wheel).
13.Move steering column assembly to secure work space.
14.Remove all of harness connectors and clips necessary to allow steering member to be removed. Move main harness aside and secure work space so that steering member can be easily removed.
15.Remove mounting bolts (A) and (B), and then remove steering member (1) from the vehicle.






CAUTION:
When removing steering member, 2 workers are required to prevent it from dropping.
16.Remove A/C unit assembly from the vehicle.

INSTALLATION

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

CAUTION:
- To prevent degradation in insulation performance, use special electric compressor oil as the compressor oil.
- In order to prevent conventional PAG oil from becoming mixed in, never reuse recovered compressor oil and instead always use new oil. The use of oil including the conventional PAG oil may degrade the performance of insulation.
- To prevent performance degradation, never use a fluorescent agent in order to detect refrigerant leakage. Also be careful that a fluorescent agent never enter the oil.
- To prevent leakage of refrigerant, replace the O-ring with a new one. Apply a coat of compressor oil to the O-ring prior to installation.
- Perform a check for refrigerant leakage when charging with refrigerant. Refer to "Check Refrigerant Leakage" Check Refrigerant Leakage.
NOTE:
When adding heater fluid. Refer to "Draining and Refilling" Draining And Refilling.