БЛОК АВТОМАТИЧЕСКОЙ ТРАНСМИССИИ ПРОВЕРКА


  1. INSPECT EXTENSION HOUSING SUB-ASSEMBLY

    A01J48CE01

    1. Using a cylinder gauge, measure the inside diameter of the extension housing bush.

      Maximum inside diameter
      40.02 mm (1.5756 in.)

      If the inside diameter is greater than the maximum, replace the extension housing.

  2. INSPECT AUTOMATIC TRANSMISSION OIL PAN SUB-ASSEMBLY

    A01J4BUE03

    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): bush wear.

  3. INSPECT OVERDRIVE BRAKE PISTON

    A01J3NUE03

    1. Place SST and a dial indicator onto the overdrive brake piston.

      SST
      09350-30020   ( 09350-06120 )
    2. A01J5H0E01

      Measure the stroke while applying and releasing compressed air (392 kPa (4.0 kgf/cm2, 57 psi)).

      Standard piston stroke
      1.75 to 2.05 mm (0.0689 to 0.0807 in.)

      If the piston stroke is not as specified, parts may have been assembled incorrectly. Check and reassemble again.

      Tech Tips


      • If the piston stroke is still outside the standard even after reassembly, select another flange.

      • There are 7 different thicknesses for the flange.

      Standard flange thickness
      No. Specified Condition No. Specified Condition
      77 3.3 mm (0.130 in.) 81 3.8 mm (0.150 in.)
      78 3.5 mm (0.138 in.) 82 3.9 mm (0.154 in.)
      79 3.6 mm (0.142 in.) 83 4.0 mm (0.157 in.)
      80 3.7 mm (0.146 in.) - -

  4. INSPECT FRONT PLANETARY RING GEAR

    A01J43RE01

    1. Using a dial indicator, measure the inside diameter of the planetary ring gear bush.

      Maximum inside diameter
      24.65mm (0.9705 in.)

      If the inside diameter is greater than the maximum, replace the planetary ring gear.

  5. INSPECT FRONT PLANETARY PINION GEAR THRUST CLEARANCE

    A01J7NOE01

    1. Using a feeler gauge, measure the pinion gear thrust clearance.

      Standard clearance
      0.20 to 0.60 mm (0.0079 to 0.0236 in.)
      Maximum clearance
      0.65 mm (0.0256 in.)

      If the clearance is greater than the maximum, replace the planetary gear.

  6. INSPECT PACK CLEARANCE OF 1ST AND REVERSE BRAKE

    A01J5BKE01

    1. Using a feeler gauge, measure the clearance between the plate and 2nd brake drum.

      Standard clearance
      0.70 to 1.22 mm (0.0276 to 0.048 in.)

      If the clearance is not as specified, select another flange.

      Tech Tips

      There are 8 different thicknesses for the flange.

      Standard flange thickness
      No. Specified Condition No. Specified Condition
      67 5.4mm (0.213 in.) 52 4.6 mm (0.181 in.)
      66 5.2 mm (0.205 in.) 53 4.4 mm (0.173 in.)
      50 5.0 mm (0.197 in.) 54 4.2 mm (0.165 in.)
      51 4.8 mm (0.189 in.) 55 4.0 mm (0.157 in.)

  7. INSPECT PACK CLEARANCE OF 2ND BRAKE

    A01J5STE01

    1. Using a feeler gauge, measure the clearance between the snap ring and flange.

      Standard clearance
      0.62 to 1.98 mm (0.0244 to 0.0780 in.)

      If the clearance is not as specified, inspect the discs.

  8. INSPECT 1ST AND REVERSE BRAKE CLUTCH DISC

    A01J3BPE03

    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.

  9. INSPECT 1ST AND REVERSE BRAKE RETURN SPRING SUB-ASSEMBLY

    A01J31GE01

    1. Using a vernier caliper, measure the free length of the spring together with the spring seat.

      Standard free length
      12.9 mm (0.508 in.)

      If the length is not as specified, replace the spring sub-assembly.

  10. INSPECT TRANSMISSION CASE BUSHING

    A01J7KJE01

    1. Using a cylinder gauge, measure the inside diameter of the transmission case rear bush.

      Maximum inside diameter
      38.19 mm (1.5035 in.)

      If the inside diameter is greater than the maximum, replace the transmission case.

  11. INSPECT PISTON STROKE OF 1ST AND REVERSE BRAKE

    A01J6PKE02

    1. Make sure the 1st and reverse brake pistons move smoothly when compressed air is applied into the transmission case.

  12. INSPECT PISTON STROKE OF 2ND COAST BRAKE

    A01J3W5E03

    1. Place a mark on the 2nd coast brake piston rod.

    2. A01J5DTE03

      Using SST, measure the stroke while applying and releasing compressed air (392 kPa (4.0 kgf/cm2, 57 psi)).

      SST
      09240-00020

      If the stroke is not as specified, replace the brake band with a new one.

  13. INSPECT OUTPUT SHAFT

    A01J6Y5E01

    1. Using a dial indicator, measure the end play of the output shaft with hand.

      Standard end play
      0.30 to 1.04 mm (0.0118 to 0.0409 in.)

      If the end play is not as specified, check for an improper installation.

    2. Check that the output shaft rotates smoothly.

  14. INSPECT INPUT SHAFT SUB-ASSEMBLY

    A01J3QVE01

    1. Make sure the input shaft rotates smoothly.

  15. CHECK INDIVIDUAL PISTON OPERATION

    A01J6IQE08

    1. Check the operating sound while applying compressed air into the oil hole indicated in the illustration.

      Tech Tips

      When inspecting the overdrive direct clutch, check with the C-0 accumulator piston hole closed.

      If there is no sound, disassemble and check the parts installation condition.


      1. Overdrive direct clutch (C1)

      2. Direct clutch (C2)

      3. Forward clutch (C3)

      4. Overdrive brake (B1)

      5. 2nd coast brake (B2)

      6. 2nd brake (B3)

      7. 1st and reverse brake (B4)