2007 Lexus LX 470FACTORY OEM SERVICE PROCEDURE

Automatic Transmission Unit: Inspection

  1. INSPECT AUTOMATIC TRANSMISSION OIL PAN SUB-ASSEMBLY 
    1. Remove the magnets, and use them to collect steel particles.
    2. Carefully look at the foreign matter and particles in the pan and on the magnets to anticipate the type of wear you will find in the transmission.
      • Steel (magnetic): bearing, gear and clutch plate wear
      • Brass (non-magnetic): bushing wear
        Fig 1: Removing Magnets
        G05282924Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT NO. 2 1 -WAY CLUTCH ASSEMBLY 
    1. Hold the reverse clutch hub and turn the No. 2 1-way clutch assembly.
    2. The No. 2 1-way clutch assembly turns freely clockwise and locks when turned counterclockwise.
      Fig 2: Inspecting No. 2 1-Way Clutch Assembly
      G05282925Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT NO. 3 BRAKE DISC 
    1. Replace all discs if one of the following problems is present: 1) a disc, plate or flange is worn or burnt, 2) the lining of a disc is peeled off or discolored, or 3) grooves or printed numbers have even a little bit of damage.
      NOTE: Before assembling new discs, soak them in ATF for at least 15 minutes.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.