Underdrive Clutch Inspection

Transmission. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
U140F Automatic Transaxle. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. INSPECT UNDERDRIVE CLUTCH PACK CLEARANCE

  2. INSPECT NO. 1 UNDERDRIVE CLUTCH DISC

  3. INSPECT UNDERDRIVE CLUTCH DRUM SUB-ASSEMBLY

  4. INSPECT UNDERDRIVE CLUTCH RETURN SPRING SUB-ASSEMBLY

Underdrive Clutch -- Inspection



1. INSPECT UNDERDRIVE CLUTCH PACK CLEARANCE


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U140F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch Inspection

  1. Install the underdrive clutch to the transaxle.

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

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



    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U140F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch Inspection

  1. Measure the underdrive clutch pack clearance while applying and releasing compressed air (392 kPa, 4.0kgf/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.U140F 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 discs 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 DRUM SUB-ASSEMBLY


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U140F 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:
    37.06 to 37.08 mm (1.4591 to 1.4598 in.)
    Maximum drum bush:
    37.13 mm (1.4618 in.)
    If the inside diameter is greater then the maximum, replace the underdrive clutch drum sub-assembly.


4. INSPECT UNDERDRIVE CLUTCH RETURN SPRING SUB-ASSEMBLY


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U140F 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 (0.6752 in.)