New clutch, and a strange new chirping sound. - Ford Powerstroke Diesel Forum
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Old 05-23-2013, 08:24 PM
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New clutch, and a strange new chirping sound.

Had one of the dampner springs bust loose on my stock clutch at 196k so spent the begining of the week swapping it out with a new LUK unit from napa. got it all in and man, NO slippage in 140 tune now and WAY softer pedal. I love it EXCEPT, now I have an interesting noise that I just cant put my finger on.

Before i tore it down I had normal gear rollover noise at low speeds, lugging, etc, other then that, NOTHING from my tranny, just good ole 7.3 rattle.

NOW, with the new clutch installed I have almost no gear rollover sounds BUT, if i set in neutral, often times while shifting, and ANY time I go from on the throttle to engine braking I get a "chirping" sound coming from the clutch region. I did new pilot and throwout bearings while i was in doing the clutch. I know its not pilot as it happens 99% of the time while clutch is engaged, so the pilot isnt spinning. it also doesnt seem like it could be the throwout as it mostly happens when im fixed in gear moving and clutch isnt engaged. I checked shaft play on input in the tranny and had no play that I could feel in any direction.

This has me stumped. its VERY annoying. sometimes under acceleration, it will not just chirp, its like it gets stuck happening. It sounds like a bearing with a ball that is skidding, I just dont understand where it can be coming from....

Any thoughts, please let me know!!! thanks.
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Old 05-24-2013, 06:20 PM
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well... looky here, glad i kept forum hunting all day at work.

installed the updated LUK clutch on the stock(or so I assume) flywheel. this is apparently a bad idea and causes something to rub and make terrible noises. I must have missed the little asterisk saying that you have to swap to all the updated parts, not just some. DUH!!!

so, here i go, tranny is just about ready to drop again. hurray. hopefully this sound goes away and i dont have to do this again anytime soon!!
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