Clutch Unit Inspection


  1. INSPECT CLUTCH DISC ASSEMBLY

  2. INSPECT CLUTCH COVER ASSEMBLY

  3. INSPECT FLYWHEEL SUB-ASSEMBLY

  4. INSPECT CLUTCH RELEASE BEARING ASSEMBLY

Clutch Unit -- Inspection



1. INSPECT CLUTCH DISC ASSEMBLY


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Clutch.Clutch Unit.Clutch Unit  Inspection
  1. Using a vernier caliper, measure the rivet head depth.

    Minimum rivet depth:
    0.3 mm (0.012 in.)
    If the depth is less than the minimum, replace the clutch disc assembly.


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Clutch.Clutch Unit.Clutch Unit  Inspection
  1. Install the clutch disc to the transmission unit.

    NOTICE:
    Be careful not to insert the clutch disc facing the wrong direction.
  1. Using a dial indicator, check the disc runout.

    Maximum runout:
    0.8 mm (0.031 in.)
    If the runout is greater than the maximum, replace the clutch disc assembly.


2. INSPECT CLUTCH COVER ASSEMBLY


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Clutch.Clutch Unit.Clutch Unit  Inspection
  1. Using a vernier caliper, measure the depth and width of the worn areas of the diaphragm spring.

    Maximum wear:
    Measurement
    Maximum wear
    A (Depth)
    0.5 mm (0.020 in.)
    B (Width)
    6.0 mm (0.236 in.)
    If the depth or width is greater than the maximum, replace the clutch cover assembly.


3. INSPECT FLYWHEEL SUB-ASSEMBLY


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Clutch.Clutch Unit.Clutch Unit  Inspection
  1. Using a dial indicator, measure the flywheel runout.

    Maximum runout:
    0.1 mm (0.004 in.)
    If the runout is greater than the maximum, replace the flywheel sub-assembly.


4. INSPECT CLUTCH RELEASE BEARING ASSEMBLY


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Clutch.Clutch Unit.Clutch Unit  Inspection
  1. Turn the bearing by hand while applying force in the axial direction.
    If the bearing sticks or has much resistance, replace the release bearing.

    HINT:
    The bearing is permanently lubricated and requires no cleaning or lubrication.