Question 1

How should the A/C Compressor be replaced and what precautions should be taken during the process on Toyota Camry?

Accepted Answer

The process of draining oil from the new electric inverter compressor requires the user to calculate the amount by subtracting the remaining oil from the removed electric inverter compressor from the oil capacity of 120 to 135 cc (4.1 to 4.6 fl.oz.) which exists in the new electric inverter compressor. Checking the compressor oil level properly and following safety procedures during cooler installation and removal protects against excessive oil that stops refrigerant cycle heating and triggers refrigerant malfunction. An insufficient amount of oil in the treated compressor requires leak checks and ND-OIL 11 should be used or an equivalent oil should be selected for replacing the compressor oil. The electric inverter compressor needs to be first provisionally attached with a bolt before securing with three bolts while tightening each at their specific sequence up to 25 Nm torque (255 kgf-cm 18 ft-lbf). Proceed by connecting the A connector while securing the green lock (B) beneath protected gloves followed by connector (C) attachment. When installing the No. 1 cooler refrigerant discharge hose, remove vinyl tape before applying sufficient compressor oil to both new O-ring and fitting surface. Secure the hose to the compressor with a bolt at its specified torque of 9.8 Nm (100 kgf-cm, 87 in-lbf). Reheat and complete the hose connection procedure for the No. 1 cooler refrigerant suction hose. Fasten the radiator hose outlet by adding its clip and put on your battery connections in reverse order. Engine coolant additions should be followed by leak inspection and a refrigerant charge up procedure and final tests for refrigerant leaks. Some vehicle systems need users to execute initialization after attaching the negative battery terminal connector during this process.

Question 2

How to replace the A/C Compressor and its magnetic clutch in a refrigeration system on Toyota Corolla?

Accepted Answer

The first step to replace the compressor and magnetic clutch requires exhausting refrigerant from the refrigeration system by using Special Service Tool: 07110-58060 (07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080). The procedure for removing Cleaner cooler refrigerant suction hose No.1 requires users to remove its bolt and o-ring and cover both openings with vinyl tape to stop moisture and foreign matter from entering. The second task involves removing the discharge hose sub-assy through bolt removal and O-ring extraction and sealing the exposed ends using vinyl tape. The procedure starts by removing the engine under cover RH and fan and generator V belt then proceeding to disconnect compressor and magnetic clutch connectors while removing three bolts. You should place the compressor in a vise clamp before removing the bolt with vise pliers while taking off the hub along with the washer from the magnet clutch assembly. The snap ring expander lets you extract both the snap ring and rotor before you uninstall the connector and remover the snap ring and starter. Move on to uninstall the components of the cooler compressor. The installation process for the magnet clutch assembly starts with part matching according to the visuals followed by starter installation and utilization of a snap ring expander to put in the new snap ring with the chamfered side facing upwards. After installing the screw and connector, add the rotor together with another new snap ring that has its chamfered side facing upward and then attach the washer and hub maintaining the original magnet clutch washer arrangement. Use a 18 Nm (183 kgf.cm, 13 ft.lbf) torque value to fasten the hub by bolt. An inspection of the magnetic clutch requires a dial indicator during which you should connect the battery leads to the magnet clutch connector while measuring the clearance within 0.35 - 0.60 mm (0.013 - 0.023 in.) range. Use three maximum number of magnet clutch washers to reposition the clearance when it exists the recommended range. To replace the compressor and magnetic clutch drain the necessary oil amount by subtracting the remaining oil amount from the new unit oil capacity which equals 120 + 15 cc (4.0 + 0.5 fl.oz.). Use ND-OIL8 for compressor oil. You should torque the compressor and magnetic clutch with three bolts to 29 Nm (295 kgf.cm, 21 ft.lbf) after installation then connect the connector. The discharge hose sub-assy installation requires compressor oil application onto the new O-ring and fitting surface before torquing the bolt to 9.8 Nm (100 kgf.cm, 87 in.lbf). Rephrase and tighten the bolt connecting cooler refrigerant suction hose No.1 with 9.8 Nm (100 kgf.cm, 87 in.lbf) after applying compressor oil to its new O-ring and fitting surface. Finish the charging of refrigerant by using Special Service Tools: 07117-48130, 07117-48140, 07110-58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080) and 490 plus or minus 30 g (17.28 plus or minus 1.06 oz.) of specified amount while engine heating and checking for refrigerant leaks.

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