Forward Clutch Inspection

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

  1. INSPECT PACK CLEARANCE OF FORWARD CLUTCH

  2. INSPECT FORWARD MULTIPLE DISC CLUTCH DISC

  3. INSPECT FORWARD CLUTCH RETURN SPRING SUB-ASSEMBLY

  4. INSPECT FORWARD CLUTCH PISTON SUB-ASSEMBLY

Forward Clutch -- Inspection



1. INSPECT PACK CLEARANCE OF FORWARD CLUTCH


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U140F Automatic Transaxle.Automatic Transaxle System.Forward Clutch  Inspection
  1. Install the forward clutch on the oil pump.

    NOTICE:
    Be careful not to damage the oil seal ring of oil pump.
  1. Using a dial indicator, measure the forward clutch piston stroke while applying and releasing compressed air (392 kPa, 4.0 kgf/cm2, 57 psi)

    Standard position stroke:
    1.74 to 2.08 mm (0.0685 to 0.0819 in.)
    If the piston stroke is less than the minimum, the parts may have been assembled incorrectly. Check and reassemble again.
    If the clearance is not as specified, select another flange.
    HINT:
    As the opening is big, cover it with a shop rag to prevent the compressed air from being discharged.


2. INSPECT FORWARD MULTIPLE DISC CLUTCH DISC


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U140F Automatic Transaxle.Automatic Transaxle System.Forward 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, replace all discs.
    2. Before assembling new discs, soak them in ATF for at least 15 minutes.


3. INSPECT FORWARD CLUTCH RETURN SPRING SUB-ASSEMBLY


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U140F Automatic Transaxle.Automatic Transaxle System.Forward Clutch  Inspection
  1. Using a vernier caliper, measure the free length of the spring together with the spring seat.

    Standard free length:
    28.23 mm (1.1102 in.)


4. INSPECT FORWARD CLUTCH PISTON SUB-ASSEMBLY


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U140F Automatic Transaxle.Automatic Transaxle System.Forward Clutch  Inspection
  1. Shake the piston to check that the check ball is not stuck.



    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U140F Automatic Transaxle.Automatic Transaxle System.Forward Clutch  Inspection
  1. Check that air does not leak from the valve when applying low compressed air (392 kPa, 4.0 kgf*cm2, 57 psi)