Worn Diaphragm
Indicator:
Pedal graunch-erratic feeling when depressing clutch pedal with engine running but ok when not running/notchy clutch pedal.
Cause:
Excessively worn diaphragm fingers
Effect:
1. Eccentricity between the axis of rotation of the clutch cover pressure plate and assembly and that of the clutch thrust bearing.
2. Worn release bearing sleeve carrier, clutch fork or pivot ball/cross shaft
3. Incorrect clutch free travel
4. Clutch control mechanism failure (Hydraulic/Cable or Linkage)
Solution:
1 Check engine to gearbox dowels and replace if necessary
2 Check the gearbox nose cone for wear and repair or replace if necessary
3 Check clutch fork and pivot ball/cross shaft and repair or replace if necessary
4 Adjust free travel to manufacture’s specification
5 If available use self-aligning bearing
Trouble Shooting
- Clutch Cover
-
Clutch Disc
- Difficult Disengagement(10)
- Loss of Drive(5)
- Noise & Vibration(3)
- Other(2)
- Shudder (judder)(3)
- Slipping(6)
- Clutch Master Cylinder(1)
- Clutch Slave Cylinder(1)
- Clutch Spigot Bearing, bush (pilot bearing)
-
CSC (concentric slave cylinder)
- CSC Leaking(1)
- Loss of Fluid(5)
- Other(1)
- Flywheel
- Thrust Bearing
- Vehicle Diagnostics(6)
