Underdrive Clutch Reassembly

Transmission. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
U151F Automatic Transaxle. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. INSTALL UNDERDRIVE CLUTCH DRUM O-RING

  2. INSTALL UNDERDRIVE CLUTCH PISTON SET

  3. INSTALL UNDERDRIVE CLUTCH RETURN SPRING SUB-ASSEMBLY

  4. INSTALL NO. 1 UNDERDRIVE CLUTCH DISC

  5. INSTALL UNDERDRIVE CLUTCH FLANGE NO. 2 HOLE SNAP RING

  6. INSPECT UNDERDRIVE PACK CLEARANCE

Underdrive Clutch -- Reassembly



1. INSTALL UNDERDRIVE CLUTCH DRUM O-RING


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch  Reassembly
  1. Coat a new O-ring with ATF, and install it to the underdrive clutch drum.

    NOTICE:
    Make sure that the O-ring is not twisted or pinched.


2. INSTALL UNDERDRIVE CLUTCH PISTON SET


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch  Reassembly
  1. Coat the underdrive clutch piston with ATF, and install it to the underdrive clutch piston drum.

    NOTICE:
    1. Be careful not to damage the O-ring.
    2. Be careful not to damage the lip of the piston.


3. INSTALL UNDERDRIVE CLUTCH RETURN SPRING SUB-ASSEMBLY


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch  Reassembly
  1. Install the return spring to the underdrive clutch drum.

    NOTICE:
    After installing the spring sub-assembly, check that all of the springs fit in the piston correctly.
  1. Coat the clutch balancer with ATF.



    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch  Reassembly
  1. Install the clutch balancer to the underdrive clutch drum.

    NOTICE:
    Be careful not to damage the lip of the clutch balancer.


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch  Reassembly
  1. Place SST on the clutch balancer and compress the piston return spring with a press.

    SST
    09350-32014(09351-32070)
  1. Using a snap ring expander, install the snap ring to the underdrive clutch drum.

  1. Make sure that the end gap of the snap ring is not aligned with the spring retainer claw.

    NOTICE:
    1. Stop the press when the spring seat is lowered to a position 1 to 2 mm (0.039 to 0.078 in.) from the snap ring groove. This prevents the spring seat from being deformed.
    2. Do not expand the snap ring excessively.


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch  Reassembly
  1. Set the end gap of the snap ring in the underdrive clutch drum as shown in the illustration.

    NOTICE:
    The end gap of the snap ring should not align with any of the stoppers.


4. INSTALL NO. 1 UNDERDRIVE CLUTCH DISC


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch  Reassembly
  1. Coat the 4 discs with ATF.

  1. Install the 4 plates, 4 discs and flange to the underdrive clutch drum.

    NOTICE:
    Make sure that the plates, discs and flange are installed as shown in the illustration.


5. INSTALL UNDERDRIVE CLUTCH FLANGE NO. 2 HOLE SNAP RING


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch  Reassembly
  1. Using a screwdriver, install the underdrive clutch flange No. 2 hole snap ring.

  1. Check that the end gap of the snap ring is not aligned with one of the cutouts.

    NOTICE:
    The snap ring should be fully engaged in the groove of the drum.


6. INSPECT UNDERDRIVE PACK CLEARANCE


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Underdrive Clutch  Reassembly
  1. Install the underdrive clutch to the transaxle case.

    NOTICE:
    Be careful not to damage the oil seal rings.
  1. Install a dial indicator as shown in the illustration.

  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 1.71 mm (0.0594 to 0.0673 in.)
    If the pack clearance is not as specified, inspect the discs, plates and flange.
    HINT:
    There are 5 different thicknesses of flanges available.
    Standard flange thickness:
    Mark
    Thickness
    Mark
    Thickness
    1
    3.0 mm (0.118 in.)
    4
    3.6 mm (0.142 in.)
    2
    3.2 mm (0.126 in.)
    5
    3.8 mm (0.150 in.)
    3
    3.4 mm (0.134 in.)
    -
    -