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COMPRESSOR AND MAGNETIC CLUTCH (for 1ZZ-FE): Inspection

  1. INSPECT MAGNETIC CLUTCH CLEARANCE 
    1. Set the dial indicator to the magnetic clutch hub.
    2. Connect the battery positive lead to the terminal 1 of the magnetic clutch connector and the negative lead to the earth wire. Turn on and off the magnetic clutch and measure the clearance.

      Standard clearance: 0.35 - 0.60 mm (0.013 - 0.023 in.) 

      Fig 1: Inspecting Magnetic Clutch Clearance
      G05195388Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the measured value is out of the standard range, remove the magnetic clutch hub and adjust it with magnetic clutch washers.

      NOTE: Adjustment shall be performed with 3 or less magnetic clutch washers.
  2. INSPECT COMPRESSOR OIL 
    1. When replacing the compressor and magnetic clutch with a new one, after gradually removing the refrigerant gas from the service valve, drain the following amount of oil from the new compressor and magnetic clutch before installation.

      Standard amount: 

      (Oil capacity inside new compressor and magnetic clutch: 120 +15 cc (4.0 + 0.5 fl. oz.)) - (Remaining oil amount in the removed compressor and magnetic clutch) = (Oil amount to be removed when replacing) 

      NOTE:
      • When checking the compressor oil level, observe the precautions on the cooler removal/installation.
      • Because compressor oil remains in the pipes of the vehicle, if a new compressor and magnetic clutch is installed without removing some oil inside, the oil amount becomes too much, preventing heat exchange in the refrigerant cycle and causing refrigerant failure.
      • If the remaining oil in the removed compressor and magnetic clutch is too small in volume, check for oil leakage.
      • Be sure to use ND-OIL8 for compressor oil.