Clutch Cover Inspection

1. Refer to CLUTCH UNIT REMOVAL/INSTALLATION  to remove the clutch cover.
2. Measure the wear of the diaphragm spring fingers.
   • If it exceeds the maximum specification, replace the clutch cover. (See CLUTCH UNIT REMOVAL/INSTALLATION .)

   Clutch cover diaphragm spring fingers maximum depth 

   0.6 mm {0.02 in} max. 

   Fig 1: Measuring Wear Of Diaphragm Spring

   Courtesy of MAZDA MOTORS CORP.
3. Measure the flatness of the pressure plate with a straight edge and a feeler gauge.
   • If it exceeds the maximum specification, replace the clutch cover. (See CLUTCH UNIT REMOVAL/INSTALLATION .)

   Maximum clearance of f fatness of the pressure plate 

   0.3 mm {0.01 in} max. 

   Fig 2: Measuring Flatness Of Pressure Plate With Straight Edge And Feeler Gauge

   Courtesy of MAZDA MOTORS CORP.
4. When checking the diaphragm spring fingers, mount a dial indicator on the cylinder block.
5. Rotate the flywheel and check for misaligned diaphragm spring fingers.

• If it exceeds the maximum specification, replace the clutch cover. (See CLUTCH UNIT REMOVAL/INSTALLATION .)

Clutch cover diaphragm spring fingers maximum misalignment 

1.0 mm {0.039 in} max. 

Fig 3: Mounting Dial Indicator On Cylinder Block

Courtesy of MAZDA MOTORS CORP.