Underdrive Clutch Inspection

Transmission. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
U241E Automatic Transaxle. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. INSPECT UNDERDRIVE PACK CLEARANCE

  2. INSPECT NO. 1 UNDERDRIVE CLUTCH DISC

  3. INSPECT UNDERDRIVE CLUTCH RETURN SPRING SUB-ASSEMBLY

  4. INSPECT UNDERDRIVE CLUTCH DRUM SUB-ASSEMBLY

Underdrive Clutch -- Inspection



1. INSPECT UNDERDRIVE PACK CLEARANCE

  1. Install the underdrive clutch to the transaxle case.

    NOTICE:
    Be careful not to damage the oil seal rings.


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U241E Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch Inspection

  1. Install a dial indicator as shown in the illustration.



    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U241E Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch Inspection

  1. Measure the underdrive clutch pack clearance while applying and releasing compressed air (392 kPa, 4.0 kgf/cm2, 57 psi).

    Standard pack clearance:
    1.51 to 1.90 mm (0.0594 to 0.0748 in.)
    If the pack clearance is not as specified, inspect the discs, plates and flange.


2. INSPECT NO. 1 UNDERDRIVE CLUTCH DISC


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U241E Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch Inspection

  1. Check to see if the sliding surface of the disc, plate and flange are worn or burnt. If necessary, replace them.

    HINT:
    1. If the lining of the disc is peeling off or discolored, or even if a part of the printed mark is defaced, replace all discs.
    2. Before assembling new discs, soak them in ATF for at least 15 minutes.


3. INSPECT UNDERDRIVE CLUTCH RETURN SPRING SUB-ASSEMBLY


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U241E Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch Inspection

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

    Standard free length:
    17.14 mm (0.6748 in.)


4. INSPECT UNDERDRIVE CLUTCH DRUM SUB-ASSEMBLY


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U241E Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch Inspection

  1. Using a caliper gauge, measure the inside diameter of the underdrive clutch drum bush.

    Standard drum bush:
    32.56 to 32.58 mm (1.2818 to 1.2826 in.)
    Maximum drum bush:
    32.63 mm (1.2846 in.)
    If the inside diameter is greater than the maximum, replace the underdrive clutch drum sub-assembly.