Clutch Cover Inspection

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Measure the wear of the diaphragm spring fingers.
- If not as specified, replace the clutch cover.
  Clutch cover diaphragm spring fingers maximum depth
  
  0.6 mm {0.024 in} max.
  
  Fig 1: Measuring Wear Of Diaphragm Spring Fingers
  Courtesy of MAZDA MOTORS CORP.
Measure the flatness of the pressure plate with a straight edge and a feeler gauge.
- If not as specified, replace the clutch cover.
  Maximum clearance of flatness of the pressure plate
  
  0.3 mm {0.012 in} max.
When checking the diaphragm spring fingers, mount a dial indicator on the cylinder block.

Fig 2: Measuring Flatness Of Pressure Plate With Straight Edge
Courtesy of MAZDA MOTORS CORP.
Rotate the flywheel and check for misaligned diaphragm spring fingers.
- If not as specified, replace the clutch cover.
  Clutch cover diaphragm spring fingers maximum misalignment
  
  1.0 mm {0.04 in} max.
  
  Fig 3: Rotating Flywheel And Check For Misaligned Diaphragm Spring
  Courtesy of MAZDA MOTORS CORP.