Clutch Assembly: Inspection

Check clutch disc for wear. Minimum wear limit of lining above rivet heads is .012" (.3 mm). Check disc runout by mounting disc onto input shaft. Mount dial indicator to transaxle case. Set indicator plunger against face of disc at specified distance from hub center. See the CLUTCH DISC MAXIMUM RUNOUT SPECIFICATIONS table.
Replace clutch disc if runout exceeds specification. Measure backlash (spline looseness) at outer edge of disc. Refer to the CLUTCH DISC MAXIMUM BACKLASH SPECIFICATIONS table. Replace clutch disc if backlash exceeds specification.
Check disc hub fit on input shaft splines. Disc should slide smoothly. Check end surface of pressure plate diaphragm springs for wear. Inspect thrust springs by shaking pressure plate assembly. Tap lightly on rivets. Replace assembly if noise is heard.
Check difference in height between diaphragm spring fingers. Adjust diaphragm fingers if height differential exceeds specification. Specification is 028" (.71 mm).
Inspect flywheel and pressure plate for scoring, grooves and warpage. Dress light roughness on pressure plate and flywheel using fine emery cloth. Machine flywheel surface (if necessary). If surfaces are deeply scored, replace flywheel or pressure plate.

CLUTCH DISC MAXIMUM RUNOUT SPECIFICATIONS

Application

⁽¹⁾ Radius In. (mm)

Runout In. (mm)

Model 190

3.54 (90)

.031 (.80)

Model 215

4.04 (106)

.035 (.90)

⁽¹⁾	Distance from hub center where runout is measured.

CLUTCH DISC MAXIMUM BACKLASH SPECIFICATIONS

Application	In. (mm)
Model 190	.031 (.80)
Model 215	.035 (.90)