Inspection (Tacoma - 4WD)

Check wear on facings of clutch disc by measuring depth of each rivet head. Minimum depth at any rivet is .012" (.30 mm). Check clutch disc runout. Maximum runout at facing on clutch disc is .031" (.80 mm). Replace clutch disc if not within specification.
Using a dial indicator, check flywheel runout. Replace flywheel if runout is greater than .004" (.10 mm).
Using a caliper, measure depth and wear on diaphragm spring on clutch cover. See Figure. Maximum depth is .024" (.60 mm) and maximum width is .197" (5.00 mm). Replace clutch cover if necessary.
Ensure clutch release bearing rotates smoothly. Ensure pilot bearing at end of crankshaft rotates smoothly. Replace clutch release bearing or pilot bearing if necessary.
Using a dial indicator, check diaphragm spring tip runout. If diaphragm spring tip runout is greater than .02" (.5 mm), adjust or replace clutch cover.