1. Using vernier calipers, measure the thickness of the lining at a rivet head on both sides.
Thickness
0.3 mm {0.012 in} min.

2. Measure the clutch disc runout using a dial indicator.
Runout
0.7 mm {0.028 in} max.

Clutch cover inspection
Clutch release collar inspectionMazda 6 Service Manual: Settings
NOTE
Depending on the grade and specification, the screen display may differ.
Select the icon on the home
screen and display the Settings screen.
Switch the tab and select the setting item you want to change.
You can customize settings in the setup display as follows:
...
Mazda 6 Service Manual: Heater core inspection
1. Remove the A/C unit. (See A/C UNIT REMOVAL/INSTALLATION.)
2. Remove the heater core from the A/C unit.
3. Inspect for cracks, damage, and coolant leakage.
If any problems are found, replace the heater core.
4. Inspect for bent fins.
If any are bent, use a flathead screwdriver to stra ...