throw out bearing squealing will adjustable clutch cable help 2003 Musatng GT - Ford Mustang Forum
 
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post #1 of 5 (permalink) Old 11-18-2008 Thread Starter
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throw out bearing squealing will adjustable clutch cable help 2003 Musatng GT

So my throwout bearing is steal squealing it has got no better or no worse ive put 3 new throwout bearing in it within the past 2 years they all squeal but when you put just any pressure at all on the clutch it stops....Ive been told to get the firewall adjuster and that it would stop it...would a adjustable clutch cable take care of it also...or could it be another problem the first bearing i took out was oval shaped but it also had 70,000 miles on it...the others all looked fine when they came out but still sounded terrible...

03 Mustang GT, bbk cai, steeda short throw shifter, pypes 409 o/r x pipe, 40 series flow masters, mach 1 chin spoiler, mach 1 grill delete, tail light covers. Still to come is tuner,3.73 gear, throttle body intake and pendelum,udp's, and a long time from now a super charger
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post #2 of 5 (permalink) Old 11-18-2008
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adjustabe clutch cables break, just do the firewall adjuster...also it's not always the fault of the TOB as there are atleast dozen reason for the TOB noise....and if your TOB was "oval" shapped, I'd suspect you have a bad inputshaft bearing retainer, which could be the whole problem....or, the fact that all the Ford TOB's are whats called "self centering" which meen if you look at the TOB and it looks off-center or not round, thats the way its suppose to look, hence the name "self centering throw-out bearing"
post #3 of 5 (permalink) Old 11-18-2008
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I suspect that if the noise stops when you push on the pedal, it is not the throw out bearing.

The throw out bearing, when adjusted properly, is not in contact with the fingers of the pressure plate, therefore, it is not spinning and shouldn't be making noise. It only turns(spins) when you push the clutch pedal down and it comes into contact with the fingers. Then it spins. A bad throw out bearing will make noise when you push the clutch pedal down and it comes in contact with the fingers and starts spinning.
On the other hand, if it is out of adjustment and is in constant contact with the fingers all the time, it will wear out pre-maturely and could squeal all the time. Since you've replaced 3 of them already with no good results, my money is on the pilot bearing in the back of the crank.

The pilot bearing is actually a 2 piece bearing. An outer case and an inner bearing. It is capable of spinning the outer casing while having the inner needle bearings stationary. When driving down the road (not pushing in the clutch pedal) the pilot bearing (both halves) are spinning at the same rate. When you push on the clutch pedal to release the disc, the inner bearing slows down while the outer casing is still turning at the same rate of speed as the engine rpm. A bad pilot bearing will usually squeal when NOT pushing the clutch pedal and stop when you DO push the clutch pedal down.


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post #4 of 5 (permalink) Old 11-18-2008
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Thrown out

Plus one for Richard's call.

Pilot Bearings should be replaced EVERY TIME the tranny comes out, imo.

Of course, I am also very unlucky and always assume such things...

Everybody remember the line from Field of Dreams?

"If you build it, they will come".

My personal mantra is:

"If I touch it, it will break".

Still, cheap insurance to replace that bearing every time.

Quote:
Originally Posted by rj8806 View Post
I suspect that if the noise stops when you push on the pedal, it is not the throw out bearing.

The throw out bearing, when adjusted properly, is not in contact with the fingers of the pressure plate, therefore, it is not spinning and shouldn't be making noise. It only turns(spins) when you push the clutch pedal down and it comes into contact with the fingers. Then it spins. A bad throw out bearing will make noise when you push the clutch pedal down and it comes in contact with the fingers and starts spinning.
On the other hand, if it is out of adjustment and is in constant contact with the fingers all the time, it will wear out pre-maturely and could squeal all the time. Since you've replaced 3 of them already with no good results, my money is on the pilot bearing in the back of the crank.

The pilot bearing is actually a 2 piece bearing. An outer case and an inner bearing. It is capable of spinning the outer casing while having the inner needle bearings stationary. When driving down the road (not pushing in the clutch pedal) the pilot bearing (both halves) are spinning at the same rate. When you push on the clutch pedal to release the disc, the inner bearing slows down while the outer casing is still turning at the same rate of speed as the engine rpm. A bad pilot bearing will usually squeal when NOT pushing the clutch pedal and stop when you DO push the clutch pedal down.


Richard
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post #5 of 5 (permalink) Old 11-18-2008
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Once again, Richard has it. I have to agree with tripleblack, that mantra is just too true, and thanks for the laugh.

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