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Troubleshooting Clutch Systems: Section #3 Slipping & Chattering
October 20, 2020 by clutchindustries ·
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Burn marks on the flywheel
Cause
Excessive greasing of the spline hub when installed.
Repair
Clean the flywheel and replace the clutch kit.
Caution
Apply the correct amount of grease on the clutch disc splines and the input shaft
Burn marks on diaphragm
Cause
Oil or grease contamination on the clutch linings or on the pressure plate.
Repair
Locate and repair all sources of contamination.
Replace the clutch kit.
Caution
Apply the correct quantity of grease on the clutch disc splines and the input shaft. Do not use contaminated pair of gloves.
Heat spots on pressure plate/flywheel
Cause
Excessive slipping due to aggressive driver/overloading
Clutch operating system is badly adjusted or defective.
Repair
Replace clutch kit and resurface or replace flywheel.
Inspect and adjust actuation system.
Caution
Driver education may be required.
Failure to resurface flywheel
Cause
Excessive slipping or shudder due to flywheel friction surface being too smooth or not flat.
Repair
Resurface or replace flywheel.
Caution
Flywheel should be replaced or resurfaced.
Clutch facing completely worn
Cause
Use over product lifetime.
Prolonged clutch slippage due to a malfunction or extremely severe use.
Disc not changed during a previous flywheel / cover replacement.
Repair
Replace clutch kit & replace/resurface flywheel.
Caution
If wear is premature further troubleshooting may be required or
driver education.
Clutch lining damaged
Cause
Excessive slippage due to aggressive driving or overloading.
The clutch operating system is badly adjusted or defective.
Repair
Replace the clutch kit.
Replace or machine evenly the flywheel.
Circular grooves appearing on the pressure plate
Cause
Linings worn out, heads of the facing rivets are in contact with the pressure place.
Repair
Replace clutch kit.
Clutch lining contaminated with oil or grease
Cause
Excessive greasing of the spline hub when installed.
Oil leakage from engine or gear box.
Repair
Replace the clutch disc.
Locate and repair all sources of contamination.
Caution
Apply the correct amount of grease on the clutch disc splines and the input shaft.
Deformation of the clutch disc
Cause
Deformed during delivery or handling.
Deformed during installation (weight of the gear box, dropped).
Deformation due to overheating during slippage.
Caution
Handle with care.
Do not place the clutch disc under a weight.