Q: How to remove and replace the A/C Compressor on Scion tC?
A: The first step to replace or remove an HVAC compressor requires that the refrigerant gas is discharged from the refrigeration system. The process starts with disconnecting and waiting at least 90 seconds on the negative battery terminal cable before proceeding. Due to moisture and foreign matter prevention the operator disconnects the No. 1 cooler refrigerant suction hose by unthreading the bolt from the O-ring before sealing each hose opening with vinyl tape. For the No. 1 cooler refrigerant discharge hose function according to the same method by removing the bolt and O-ring while sealing all openings with vinyl tape. First remove the engine under cover from the right-hand side followed by fan and generator V belt removal. To remove the cooler compressor assembly disconnect its connector and remove four bolts which will allow you to extract it.
A: The first task before removing the 2AZ-FE engine HVAC compressor requires performing a refrigerant recovery process from the refrigeration system. Start by taking off the rear engine under cover RH and the No. 1 engine under cover from the vehicle. Next disconnect the fan and generator V belt. The suction hose sub-assembly requires removing its bolt along with its O-ring before securing the openings with vinyl tape as moisture and foreign material prevention. The discharge hose sub-assembly requires removal of its bolt and O-ring followed by opening closure with vinyl tape across both sections. The compressor assembly removal process requires disconnecting the connector and taking out the two bolts and two nuts while using a "TORX" socket wrench (E8) to extract the two stud bolts and the compressor.
Q: How to replace the A/C Compressor with a pulley assembly on Scion xA?
A: The procedure for w/pulley compressor assembly replacement starts with refrigerant discharge from the refrigeration system by using Special Service Tool: 07110-58060 (07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080). The fan and generator V belt should be removed along with cooler refrigerant discharge hose No.1 by unfastening its bolt and O-ring before sealing each opening with vinyl tape to block moisture and foreign material entry. Afterwards disconnect the suction hose sub assembly by removing its bolt together with its O-ring before sealing all openings. Detach both the engine under cover RH and w/pulley compressor assembly by removing its connector and 4 bolts. Before installing the new compressor and magnetic clutch users should inspect the oil amounts and use ND-OIL 8 as the compressor oil. The w/pulley compressor assembly must be installed with four bolts reaching a torque of 25 Nm and connected to power. The suction hose sub assembly installation necessitates vinyl tape removal followed by the application of compressor oil to a new O-ring installation before bolt tightening to 9.8 Nm (100 kgf.cm) (87 in.lbf). Follow the same procedure for cooler refrigerant discharge hose No.1 by applying compressor oil to the new O-ring then torquing the bolt to 9.8 Nm (100 kgf.cm, 87 in.lbf). The installation process of the fan and generator V belt should be followed by belt adjustment while the charging of the refrigerant requires the use of Special Service Tool: 07110-58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080) to maintain a 460 plus or minus 30 g (16.2 plus or minus 1.1 oz.) measurement of refrigerant before engine warm-up to verify no leakage occurs.