Pressure plate wear., Causes. |
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Pressure plate wear., Causes. |
914Toy |
Mar 19 2020, 08:21 AM
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#1
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Senior Member Group: Members Posts: 727 Joined: 12-November 17 From: Laguna beach Member No.: 21,596 Region Association: Southern California |
To the brain trust: re slight shudder when engaging the clutch in first gear to begin moving forward.
The clutch assembly is a Sachs brand 228 mm and was installed new about two years ago onto a new flywheel on my 2.7 911 engine, and now has some 5,000 street miles on it. Also new was the throw out bearing (Sachs) and nylon bush under the clutch fork. I expected to see some clutch disk "burn" deposit on the fly wheel and/or pressure plate. To my surprise, while there were some small deposits on the flywheel and pressure plate, these parts and the clutch disk appear to be in near new condition - little measurable or obvious wear. However, the tips of the pressure plate "fingers (see pic) were worn down where the throw out bearing (TOB) contacts them. This suggests the TOB is slipping on the finger tips causing friction and wear. The TOB feels solid and spins freely like new. I don't believe this is normal wear. Any thoughts/advice? |
914Toy |
Mar 27 2020, 02:38 PM
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#2
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Senior Member Group: Members Posts: 727 Joined: 12-November 17 From: Laguna beach Member No.: 21,596 Region Association: Southern California |
Completed installing the tranny with new pressure plate (Sachs 228 mm) on the aftermarket flywheel - cleaned up with some fine emery paper - and a new throwout bearing. Adjusted the cable so that the clutch engages at about 1/3 to 1/2 distance out from floor board stop. Clutch engages perfectly and sooner than I remember the previous set up. So cause of premature wear and shudder appears to clearly be due to having had the clutch cable too tight. Lesson learned (IMG:style_emoticons/default/beer.gif)
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rgalla9146 |
Mar 27 2020, 03:38 PM
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#3
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Advanced Member Group: Members Posts: 4,624 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None |
Completed installing the tranny with new pressure plate (Sachs 228 mm) on the aftermarket flywheel - cleaned up with some fine emery paper - and a new throwout bearing. Adjusted the cable sohat the clutch engages at about 1/3 to 1/2 distance out from floor board stop. Clutch engages perfectly and sooner than I remember the previous set up. So cause of premature wear and shudder appears to clearly be due to having had the clutch cable too tight. Lesson learned (IMG:style_emoticons/default/beer.gif) "Adjusted the cable so that the clutch engages at about 1/3 to 1/2 distance out from floor board stop" .....proper clutch adjustment is not determined by where you feel engagement. It is determined by free play at first pedal motion....at the top. |
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