Broken Drive Clutch Springs


by Will Williamson
May 25th, 2006

All of the clutching and gearing changes in the world are worthless if your drive clutch spring is not performing like it should. Every other calibration is based on the drive clutch spring being at a constant, known value.  When the spring changes in value, the rest of the clutching is thrown off.
   The spring should be inspected for uniformity; stand it up on end and visually inspect all coils are evenly spaced and uniform: the spring should not be deformed in any way. One main cause of broken drive springs is a lack of clearance between the inner diameter of the spring and the cover plate. Place the spring into the clutch cover and see how loose (or tight) the spring's inner coils are with the cover. The spring should rotate freely here. If this is tight, the chances of the spring breaking increase dramatically.

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Original Article by Will Williamson, May 25th, 2006