AUTOMATIC TRANSMISSION UNIT > INSPECTION

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1. INSPECT AUTOMATIC TRANSMISSION OIL PAN SUB-ASSEMBLY


D001124E01

  1. Remove the magnets, and use them to collect steel particles.

  1. Carefully lock 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.

    1. Steel (magnetic): bearing, gear and clutch plate wear
    2. Brass (non-magnetic): bushing wear



2. INSPECT NO. 2 1-WAY CLUTCH ASSEMBLY


D027993E01

  1. Hold the Reverse clutch hub and turn the No. 2 1-Way clutch assembly

  1. The No. 2 1-Way clutch assembly turns freely clockwise and locks when turned counterclockwise.



3. INSPECT NO. 3 BRAKE DISC


D001216E01

  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.

    NOTICE:
    Before assembling new discs, soak them in ATF for at least 15 minutes.



4. INSPECT NO. 3 BRAKE PISTON RETURN SPRING SUB-ASSEMBLY


D029828E01

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

    Standard free length:
    15.72 mm (0.619 in.)



5. INSPECT FRONT PLANETARY GEAR ASSEMBLY


D028544E01

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

    Standard clearance:
    0.2 to 0.60 mm (0.008 to 0.024 in.)
    Maximum clearance:
    0.65 mm (0.026 in.)

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



    D028543E01

  1. Using a dial indicator, measure the inside diameter of the front planetary gear bushing.

    Maximum inside diameter:
    57.48 mm (2.263 in.)

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



6. INSPECT 1-WAY CLUTCH ASSEMBLY


D028542E01

  1. Install the 1 way clutch assembly to .1 way clutch inner race.

  1. Hold the 1 way clutch inner race and turn the 1 way clutch assembly.

  1. Check that the 1 way clutch assembly turns freely counterclockwise and locks when turned clockwise.

  1. Remove the 1 way clutch assembly from 1 way clutch inner race.



7. INSPECT NO. 1 BRAKE DISC


D001216E01

  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.

    NOTICE:
    Before assembling new discs, soak them in ATF for at least 15 minutes.



8. INSPECT BRAKE PISTON RETURN SPRING SUB-ASSEMBLY


D003830E01

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

    Standard free length:
    17.05 mm (0.671 in.)



9. INSPECT NO. 2 BRAKE DISC


D001216E01

  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.

    NOTICE:
    Before assembling new discs, soak them in ATF for at least 15 minutes.



10. INSPECT NO. 2 BRAKE PISTON RETURN SPRING SUB-ASSEMBLY


D029829E01

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

    Standard free length:
    17.45 mm (0.687 in.)



11. INSPECT CENTER PLANETARY GEAR ASSEMBLY


D028533E01

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

    Standard clearance:
    0.12 to 0.68 mm (0.005 to 0.027 in.)
    Maximum clearance:
    0.73 mm (0.029 in.)

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



12. INSPECT NO. 3 1-WAY CLUTCH ASSEMBLY


D028532E01

  1. Hold the rear planetary ring gear flange sub assembly turn the 1 way clutch assembly.

  1. Check that the 1 way clutch assembly turns freely counterclockwise and locks when turned clockwise.



13. INSPECT REAR PLANETARY RING GEAR FLANGE SUB-ASSEMBLY


D028531E01

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

    Maximum inside diameter:
    32.175 mm (1.267 in.)

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



14. INSPECT INTERMEDIATE SHAFT


D028529E01

  1. Using a dial indicator, check the intermediate shaft runout.

    Maximum runout:
    0.08 mm (0.003 in.)

    NOTICE:
    If the bend exceeds the specification, replace the intermediate shaft with anew one.



    D028530E02

  1. Using a micrometer, check the outer diameter of the intermediate shaft positions shown in the diagram.

    Standard diameter:
    A:
    25.962 to 25.975 mm (1.022 to 1.023 in.)
    B:
    25.962 to 25.975 mm (1.022 to 1.023 in.)
    C:
    32.062 to 32.075 mm (1.262 to 1.263 in.)
    D:
    32.062 to 32.075 mm (1.262 to 1.263 in.)

    Standard diameter:
    A:
    25.912 mm (1.020 in.)
    B:
    25.912 mm (1.020in.)
    C:
    32.012 mm (1.260 in.)
    D:
    32.012 mm (1.260 in.)

    NOTICE:
    If the outer diameter is outside the standard, replace the intermediate shaft with the new one.



15. INSPECT NO. 4 BRAKE DISC


D001216E01

  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.

    NOTICE:
    Before assembling new discs, soak them in ATF for at least 15 minutes.



16. INSPECT REAR PLANETARY GEAR ASSEMBLY


D028527E01

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

    Standard clearance:
    0.2 to 0.6 mm (0.008 to 0.024 in.)
    Maximum clearance:
    0.65 mm (0.026 in.)

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



    D028528E01

  1. Using a dial indicator, measure the inside diameter of the rear planetary gear bushing.

    Maximum inside diameter:
    20.075 mm (0.790 in.)

    1. If the inside diameter is greater than the maximum, replace the rear planetary gear assembly.



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


D029830E01

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

    Standard free length:
    23.74 mm (0.935 in.)



18. INSPECT PACK CLEARANCE OF FIRST AND REVERSE BRAKE


D027966E01

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



19. INSPECT NO. 1 PISTON STROKE OF BRAKE PISTON


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  1. Make sure the No. 1 brake piston moves smoothly when applying and releasing the compressed air into the transmission case.



20. INSPECT INDIVIDUAL PISTON OPERATION INSPECTION


D028547E02

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

    HINT:
    When inspecting the O/D direct clutch, check with the C3 accumulator piston holes indicated in the illustration.
    If there is no sound, disassembly and check the installation condition of the parts.

    1. (1) No. 2 clutch (C2)
    2. (2) No. 3 clutch (C3)
    3. (3) No. 1clutch (C1)
    4. (4) No. 3 brake (B1)
    5. (5) No. 1 brake (B1)
    6. (6) No. 2 brake (B2)
    7. (7) No. 4 brake (B4)