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Old 10-03-2008, 06:42 PM   #1
DiscoGsus
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Default Pilot bearing gone bad?

How do I know if a pilot bearing has gone bad?
What noises would it make and when would it make them?

I know what noises the car is making, but I don't want to lead the witnesses

See Post #4.
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Last edited by DiscoGsus; 10-06-2008 at 04:59 PM.
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Old 10-06-2008, 02:20 PM   #2
AndrewtechAutomotive
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With the clutch out, the pilot will make NO noise. A binding pilot bearing will act like the clutch doesnt release all the way, and/or produce noise when the clutch is pressed.
Does this help????
Andrew
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Old 10-06-2008, 04:04 PM   #3
SOHCEJ25
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I have seen some really bad Pilot bearing and not have any noises or symptoms .....


Shawn
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Old 10-06-2008, 04:54 PM   #4
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I thought the throw-out bearing made noise when the clutch is pressed? And the Pilot when it wasn't.... hmm.

I have a noise that goes away as soon as you press the clutch pedal. Not even press it all the way in and disengage the tranny, just depress it like 1/2" and as soon as the "free play" in the system is taken up the sound disappears.

The noises is sort of engine speed related. And it is an annoying squeaking sound. (Sounds like a squeaky belt.)
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Old 10-07-2008, 08:12 AM   #5
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EXACTLY what I have right now.

I bought a new TO bearing from Subaru that's being installed right now, so we'll see if that works.

Pretty crazy, but you described the exact problem I'm having. It sounded like a squeaky belt, but when I barely press on the clutch, it goes away completely.

Last edited by Woodward; 10-07-2008 at 09:39 AM.
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Old 10-07-2008, 10:40 AM   #6
DiscoGsus
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Please let me know if that fixes it!

Andrew, does that sound like a Throw out bearing?
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Old 10-08-2008, 03:04 AM   #7
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I'm getting my tranny worked on right now, so I HOPE it's the TO bearing bc I don't want to have to take it all apart again for the little pilot bearing :/

This is what happened to me though... I blew 3rd gear so while it was down I thought I'd upgrade the clutch to an Exedy Stg 1. I also replaced the stock TO bearing with the one that came in the package w/ the clutch. I think that's when it started to sound weird. I always thought it was a belt till I had my window down at an intersection and pressed the clutch a lil.

If I don't reply back on here about the replaced TO bearing in a week or so, then just PM me.
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Old 10-10-2008, 04:27 PM   #8
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was it TO bearing?
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Old 10-13-2008, 08:03 AM   #9
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STILL waiting for my car to be fixed. It's been one month now.....
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Old 10-15-2008, 09:24 PM   #10
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I just finished replacing the clutch disc, pressure plate, TO bearing, and pilot bearing in my '02 WRX.

It was making a noise whenever the clutch was beginning to engage or disengage (pedal about 1/2 way up/down). I assumed it was the TO (aka 'release') bearing but it turned out to be the pilot bearing.

The strange thing is that it never made noise when the clutch was fully engaged or fully disengaged, only in between.

BTW -- I broke a bearing puller trying to remove it and finally had to remove the flywheel and tap it out. If I had it to do again I would just remove the flywheel at the first sign that it was going to be stubborn.
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Old 10-23-2008, 02:23 PM   #11
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This thread has/had a similar problem, and contains useful things on posts 12 and 24. (As well as a general helping hint on post 34.)
http://forums.nasioc.com/forums/show....php?t=1553251

When/If it gets warm or a I find a garage, I will try to lube my shift fork and check the slave cylinder condition as well.
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Old 10-23-2008, 04:05 PM   #12
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Quote:
Originally Posted by DiscoGsus View Post
This thread has/had a similar problem, and contains useful things on posts 12 and 24. (As well as a general helping hint on post 34.)
http://forums.nasioc.com/forums/show....php?t=1553251

When/If it gets warm or a I find a garage, I will try to lube my shift fork and check the slave cylinder condition as well.
What TurboL says about the pilot bearing in #34 is correct, however it didn't squeal when the clutch pedal was depressed (even though you'd think it would).

In fact, it _never_ made noise when the clutch was fully engaged or disengaged -- only when it was slipping -- in the process of engaging or disengaging.

The only theory I can think of is that when the clutch is fully engaged or disengaged there is no (or very little) lateral force applied to the input shaft, but when the clutch is engaging the shaft has torque applied to it causing it to shift position (as much as the transaxle input bearing will allow).

Just a guess.
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Old 10-27-2008, 04:32 AM   #13
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My noise was fixed. Just bought a TO bearing from Subaru and had a shop replace it while my tranny was being worked on. The sound Disco and I described is completely gone in my car now.

I must have gotten a bad bearing from Exedy or maybe it was damage when we installed it the first time... not sure.
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Old 10-27-2008, 04:56 AM   #14
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Quote:
Originally Posted by Woodward View Post
My noise was fixed. Just bought a TO bearing from Subaru and had a shop replace it while my tranny was being worked on. The sound Disco and I described is completely gone in my car now.

I must have gotten a bad bearing from Exedy or maybe it was damage when we installed it the first time... not sure.
Congrats!
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Old 10-27-2008, 10:55 AM   #15
DiscoGsus
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Quote:
Originally Posted by Woodward View Post
My noise was fixed. Just bought a TO bearing from Subaru and had a shop replace it while my tranny was being worked on. The sound Disco and I described is completely gone in my car now.

I must have gotten a bad bearing from Exedy or maybe it was damage when we installed it the first time... not sure.
My clutch is an Exedy as well....

Can you ask if they lubed your shift fork as well?
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Old 10-29-2008, 06:46 AM   #16
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Quote:
Originally Posted by DiscoGsus View Post
My clutch is an Exedy as well....

Can you ask if they lubed your shift fork as well?
I did myself before when I replaced my clutch with my Subaru mech. and the noise started. But I think we have different clutch setups so I'm not sure what u mean.
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Old 01-08-2009, 05:25 PM   #17
DiscoGsus
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So, it was the throw-out bearing.
And it cost WAY to much to fix because you have to pull the transmission.... but I have another new exedy.
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