OEM Toyota Sequoia A/C Compressor Clutch

Toyota Sequoia A/C Compressor Clutch Parts and Q&A

• Clutch & Pulley
  88410-0C040
  Q: How to service and repair the A/C Compressor Clutch on Toyota Sequoia?

  A:

  Service and repair operations for the compressor clutch start with disassembly work. Start by removing the pressure plate through the combination of Special Service Tool: 07112-76060 and a socket wrench to unbolt the shaft bolt while maintaining a torque rating of 18 N.m (184 kgf.cm, 12.3 ft-lbf). Place Special Service Tool: 07112-66040 on the pressure plate for operation with Special Service Tool: 07112-76060 and a socket wrench to separate the pressure plate from its position then extract all shims already present in the pressure plate. The tool Special Service Tool: 95994-10020 helps remove the snap ring while viewing the beveled side from above, then tap the rotor off the shaft using a plastic hammer with care to preserve the pulley. The method to remove the stator begins by removing the stator lead wire from the compressor housing followed by using Special Service Tool: 95994-10020 to dislodge the snap ring with its beveled side facing up and then extracting the stator. The steps for reassembly proceed in the opposite order of disassembly. Use the dial indicator set to the pressure plate to measure magnetic clutch clearance by connecting the magnetic clutch lead wire to the positive (+) terminal of the battery and verifying plate-rotor distance when applying the negative (-) terminal. The clearance zone measurement stands between 0.35 - 0.50 mm (0.014 - 0.024 in.) according to the standard. Standard shims with dimensions 0.1 mm (0.004 in.), 0.3 mm (0.012 in.) or 0.5 mm (0.020 in.) should be used to correct the clearance which falls outside the 0.35 - 0.50 mm (0.014 - 0.024 in.) range.
• Clutch
  88410-0C050
  Q: How to remove and replace the A/C Compressor Clutch on Toyota Sequoia?

  A:

  Before removing and replacing the compressor and magnetic clutch you must start the engine at idle speed with the air conditioner activated for ten minutes before shutting off the engine and disconnecting the negative battery cable. The refrigeration system requires discharging of refrigerant followed by disconnecting discharge and suction hoses by removing 2 nuts which must be capped instantaneously to block entry of moisture and dirt. To start, disconnect the power connector then unfasten all 3 bolts and the single nut while also detaching the cooler bracket. The compressor must be extracted after taking off the Drive Belt and cooler compressor. The installation process requires mounting the cooler compressor assembly with cooler bracket using 3 bolts and nut while torquing to 47 N.m (480 kgf.cm, 35 in.lbf) and 25 N.m (255 kgf.cm, 18 in.lbf) before connector connection. A proper connection of discharge and suction hoses requires installation with 2 nuts to 10 N.m (100 kgf.cm, 7 in.lbf) by applying compressor oil to 2 new O-rings before use. Install and check the drive belt, reconnect the cable to the negative battery terminal, evacuate air from the refrigeration system, and charge the system with refrigerant, using 750 plus or minus 50g (26.45 plus or minus 1.76 oz.) for single A/C or 1050 plus or minus 50g (37.03 plus or minus 1.76 oz.) for dual A/C. Inspect for refrigerant leakage using a gas leak detector, checking the tightening torque at the joints if any leakage is found, and perform initialization, noting that some systems require this when the cable from the negative battery terminal is disconnected.