Pressure plate wear., Causes. |
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Pressure plate wear., Causes. |
914Toy |
Mar 19 2020, 08:21 AM
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#21
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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? |
jcd914 |
Mar 19 2020, 10:42 PM
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#22
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
To me the un-even wear on the pressure plate fingers says, bad pressure plate.
All the fingers of the pressure plate should be under the same pressure and should wear evenly. More wear on some fingers indicates more pressure of that finger. When you bolt the clutch disc and pressure plate back on to the flywheel, check then relative position of the pressure plate fingers to each other. They should be even so the TO bearing will press evenly. Jim |
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