Clutch Unit: Inspection

INSPECT CLUTCH DISC ASSEMBLY
1. Using a vernier caliper, measure the rivet head depth.
  Minimum rivet depth: 0.3 mm (0.012 in.)
  
  Fig 1: Measuring Rivet Head Depth
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the depth is less than the minimum, replace the clutch disc assembly.
2. Install the disc on the transaxle.
  NOTE: Take care not to insert the clutch disc in the wrong direction.
3. Using a dial gauge, measure the disc runout.
  Maximum runout: 0.8 mm (0.031 in.)
  
  If the runout is greater than the maximum, replace the clutch disc assembly.
  
  Fig 2: Measuring Disc Runout
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT CLUTCH COVER ASSEMBLY

Using a vernier caliper, measure the depth and width of the worn areas of the diaphragm spring.

Fig 3: Measuring Depth And Width Of Worn Areas Of Diaphragm Spring

G05388707

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Maximum wear

DIAPHRAGM SPRING SPECIFICATION

Measurement	Maximum Wear
A (Depth)	0.5 mm (0.020 in.)
B (Width)	6.0 mm (0.236 in.)

If the wear is greater than the maximum, replace the clutch cover assembly.

INSPECT FLYWHEEL SUB-ASSEMBLY
1. Using a dial gauge, 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.
  
  Fig 4: Measuring Flywheel Runout
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT CLUTCH RELEASE BEARING ASSEMBLY
1. Check that the bearing moves smoothly without abnormal resistance by turning the sliding parts of the bearing (contact surfaces with the clutch cover) while applying force in the axial direction.
2. Inspect the bearing for damage or wear. If necessary, replace the release bearing assembly.
  
  Fig 5: Inspecting Clutch Release Bearing Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002