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Automatic Transaxle Unit: Inspection

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  1. INSPECT FRONT CLUTCH DISC 
    1. Check whether the sliding surfaces of the discs, plates and flanges are worn or burnt. If necessary, replace them.
    NOTE:
    • If the lining of any disc is peeled off or discolored, or even if part of the printed number is damaged, replace all the discs.
    • Before assembling new discs, soak them in ATF for at least 15 minutes.
    Fig 1: Identifying Front Clutch Disc
    G04831343Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FORWARD CLUTCH RETURN SPRING SUB-ASSEMBLY 
    1. Using a vernier caliper, measure the free length of the spring together with the spring seat.

      Standard free length: 

      21.69 mm (0.853 in.) 

      Fig 2: Measuring Free Length Of Spring Together With Spring Seat
      G04831480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT OVERDRIVE BRAKE RETURN SPRING SUB-ASSEMBLY 
    1. Using a vernier caliper, measure the free length of the spring together with the spring seat.

      Standard free length: 

      17.88 mm (0.703 in.) 

    Fig 3: Measuring Free Length Of Spring Together With Spring Seat
    G04831346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT REVERSE CLUTCH DISC 
    1. Check whether the sliding surfaces of the discs, plates and flanges are worn or burnt. If necessary, replace them.
    NOTE:
    • If the lining of any disc is peeled off or discolored, or even if part of the printed mark is damaged, replace all the discs.
    • Before assembling new discs, soak them in ATF for at least 15 minutes.
    Fig 4: Identifying Reverse Clutch Disc
    G04831507Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT DIRECT CLUTCH DISC 
    1. Check whether the sliding surfaces of the discs, plates and flanges are worn or burnt. If necessary, replace them.
    NOTE:
    • If the lining of any disc is peeled off or discolored, or even if part of the printed mark is damaged, replace all the discs.
    • Before assembling new discs, soak them in ATF for at least 15 minutes.
    Fig 5: Identifying Direct Clutch Disc
    G04831508Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT DIRECT CLUTCH RETURN SPRING SUB-ASSEMBLY 
    1. Using a vernier caliper, measure the free length of the spring together with the spring seat.

      Standard free length: 

      31.7 mm (1.248 in.) 

    Fig 6: Measuring Free Length Of Spring Together With Spring Seat
    G04831509Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSPECT DIRECT CLUTCH PISTON SUB-ASSEMBLY 
    1. Shake the direct clutch pin and confirm that the check ball is not stuck.
    2. Apply low pressure compressed air to the check ball and confirm that there is no air leaks.
    Fig 7: Applying Low Pressure Compressed Air To Check Ball
    G04831510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSPECT INTERMEDIATE SHAFT SUB-ASSEMBLY 
    1. Shake the direct clutch pin and confirm that the check ball is not stuck.
    2. Apply low pressure compressed air to the check ball and confirm that there is no air leaks.
    Fig 8: Applying Low Pressure Compressed Air To Check Ball
    G04831511Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. INSPECT 2ND COAST AND OVERDRIVE BRAKE DISC 
    1. Check whether the sliding surfaces of the discs, plates and flanges are worn or burnt. If necessary, replace them.
    NOTE:
    • If the lining of any disc is peeled off or discolored, or even if part of the printed number is damaged, replace all the discs.
    • Before assembling new discs, soak them in ATF for at least 15 minutes.
    Fig 9: Identifying Front Clutch Disc
    G04831343Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. INSPECT 2ND BRAKE DISC 
    1. Check whether the sliding surfaces of the discs, plates and flanges are worn or burnt. If necessary, replace them.
    NOTE:
    • If the lining of any disc is peeled off or discolored or even if part of the printed mark is damaged, replace all the discs.
    • Before assembling new discs, soak them in ATF for at least 15 minutes.
    Fig 10: Identifying 2nd Brake Disc
    G06012366Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. INSPECT 2ND BRAKE PISTON RETURN SPRING SUB-ASSEMBLY 
    1. Using a vernier caliper, measure the free length of the spring together with the spring seat.

      Standard free length: 

      14.65 mm (0.576 in.) 

    Fig 11: Measuring Free Length Of Spring Together With Spring Seat
    G04831493Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. INSPECT 1ST AND REVERSE BRAKE DISC 
    1. Check whether the sliding surfaces of the discs, plates and flanges are worn or burnt. If necessary, replace them.
    NOTE:
    • If the lining of any disc is peeled off or discolored, or even if part of the printed mark is damaged, replace all the discs.
    • Before assembling new discs, soak them in ATF for at least 15 minutes.
    Fig 12: Identifying 1st And Reverse Brake Disc
    G06012368Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. INSPECT 1ST AND REVERSE BRAKE RETURN SPRING SUB-ASSEMBLY 
    1. Using a vernier caliper, measure the free length of the spring together with the spring seat.

      Standard free length: 

      13.96 mm (0.549 in.) 

    Fig 13: Measuring Free Length Of Spring Together With Spring Seat
    G04831346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002