I don't know if your car uses a roller bearing or carbon bearing, nor
did you say that this had been operating correctly and that this is now
a failure.
If this is a recent failure, I would suspect the throwout bearing. I
had a carbon-type one fail abruptly, caused grumbling sounds, and then
the clutch could not be disengaged. The carbon had disintegrated and
fell out of the shell. The steel/iron remainder of the bearing against
the pressure plate accounted for the noises.
I have had roller-bearing throwout bearings fail on 60's-era Chevelles,
and they would make a lot of noise before their failure. The carbon-type
failure was abrupt, a snap, no disengagement, and noise when the pedal
was depressed.
On 11/19/2013 12:56 AM, Mark J Bradakis wrote:
> Have a rubber bumper B with clutch problems. Hydraulics seem fine,
> pedal feels okay, not
> great, the slave moves the lever enough that it should work. But with
> the engine running
> when you push in the clutch pedal there is an odd sort of grumbling
> noise from the clutch,
> and it is obviously not working.
>
> One possibilty I thought of after I left my friend's shop was involves
> the throwout bearing.
> I didn't install this clutch, so I don't know if the retaining clips
> that hold the bearing to
> the fork were new, used or properly installed. Have any of you had
> one of these clips
> fail, allowing the bearing to fall out of the yoke? I'm wondering if
> that is a possibility.
>
> Another possibility is the person who did the job put the disk in
> backwards. But whatever
> the problem, the gearbox has to be pulled. I might get a bit dirty
> down at Bailey's tomorrow.
>
> mjb.
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