Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Mmerlin, Landseer, Mike Frye ***Think I have the solution***

Thread Tools
 
Search this Thread
 
Old 05-28-2011, 11:21 PM
  #1  
jcg928s
Instructor
Thread Starter
 
jcg928s's Avatar
 
Join Date: Apr 2011
Location: New Orleans, Louisiana
Posts: 134
Likes: 0
Received 0 Likes on 0 Posts
Default Mmerlin, Landseer, Mike Frye ***Think I have the solution***

Hey guys,

Well the squeak with the clutch pedal is now a squeak all the time at idle. It stops when I press the clutch pedal. As soon as it started doing this, I pulled it in the garage and it wont get started again until I do a clutch job.

Question is, what else should I replace? The shifter moves about a half an inch front and back before moving the gears in the transmission. Is there a bushing or something I should replace while I am doing the job? I would like her to have a tight precise shift again, ya know. I mean, it shifts fine, but just a little loose.

Heres the list of things I was thinking about:

Throw out bearing
Pressure plate
Disks (If they are bad)
Pilot Bearing

and whatever else I should replace?

Thanks guys.

********** UPDATE************

Ok I found out two things, with a little research and hopefully common sense, LOL!

I think I know why the pedal is so hard to press..........

Of course this is not only supposed to be 1 spring not 3 broken pieces, but the measurement from the center of the pin and the bottom of the wingnut is supposed to be 43mm. Its like 25mm.

SO I need to order a spring....


Now I also tried to research clutch wear. So I jumped under the car and looked in the inspection hole in the bellhousing. Here is what I saw......


The release lever isnt really even visible. Maybe 2mm of it is visible. When I looked into the hole, the parts had no surface rust and looked fairly new. (Just a guess).

So with the car NOT running, I had my wife press the clutch pedal down and up a few times and it was quiet. So I scratched my head and said, "Depress it slow", then the sound was made. It is not really a squeak, but a creaking noise. So, fast depress quiet, slow depress creak.
Could it be the bushings instead? A few people mentioned this.

Like I said, the clutch has plenty of bite. It never slips, even when I have my foot in it.

Any new thoughts guys?

***Update #2***

Ok, so after removing the bell housing plate, I look and see that the upper bushing for the release lever has NO bushing whatsoever, the ball is just kind of floating in the large metal arm. So I am going to order the spring for the pedal, upper bushing, and shifter bushings as well. I will also check for the clevis pin and rod as well.

I will keep everyone updated!

Thanks for all the input guys!

Last edited by jcg928s; 06-02-2011 at 12:14 AM.
Old 05-28-2011, 11:38 PM
  #2  
BC
Rennlist Member
 
BC's Avatar
 
Join Date: Dec 2001
Posts: 25,152
Received 87 Likes on 56 Posts
Default

That intermediate shaft- expensive but ask hacker about the headache it causes when it is grooved microscopically.
Old 05-28-2011, 11:39 PM
  #3  
IrishLegend
Three Wheelin'
 
IrishLegend's Avatar
 
Join Date: Jul 2009
Location: Austin, Texas
Posts: 1,267
Received 82 Likes on 34 Posts
Default

I'm having the same issues. I'm going to start with the pilot bearing, the throwout bearing and see what everything else looks like when I'm hands deep in it.
Old 05-28-2011, 11:50 PM
  #4  
Landseer
Rennlist Member
 
Landseer's Avatar
 
Join Date: Sep 2007
Location: Johnson City, TN
Posts: 12,150
Received 367 Likes on 213 Posts
Default

Am wondering about your torque tube bearings or input bearing on trans if it goes away when clutch is actuated.

But it could just be the sound of the throwout bearing while it is spinning, unloaded.

How about a wav file of the noise behavior?
Old 05-28-2011, 11:54 PM
  #5  
tveltman
Burning Brakes
 
tveltman's Avatar
 
Join Date: Oct 2008
Location: Palo Alto, CA
Posts: 972
Likes: 0
Received 0 Likes on 0 Posts
Default

If you are going to remove the clutch assembly, I would replace the whole thing. You may want to get your flywheel resurfaced as well. +1 on torque tube bearings. This is a job that I wish I had done the last time I did the clutch. Car runs fine, but there is a slight rattle that I'm pretty sure is a spun bearing. Just my 0.02
Old 05-29-2011, 12:00 AM
  #6  
IrishLegend
Three Wheelin'
 
IrishLegend's Avatar
 
Join Date: Jul 2009
Location: Austin, Texas
Posts: 1,267
Received 82 Likes on 34 Posts
Default

http://www.youtube.com/watch?v=Ooqxn...e_gdata_player
Old 05-29-2011, 12:03 AM
  #7  
jcg928s
Instructor
Thread Starter
 
jcg928s's Avatar
 
Join Date: Apr 2011
Location: New Orleans, Louisiana
Posts: 134
Likes: 0
Received 0 Likes on 0 Posts
Default

Hey guys,

Chris, I cant do a Video right now. The little one just went down to sleep. If I wake her, I have to deal with the Warden, LOL.

I can say, I can move the clutch pedal literally an 1/8th of an inch and it stops. Also, its not a Squeeeeeeeeeeek. Its more of a squeak, squeak, squeak. It changes rythm with RPM. If that helps.........

Keep in mind this clutch has 116K on it. The clutch was never changed.
Old 05-29-2011, 12:12 AM
  #8  
Landseer
Rennlist Member
 
Landseer's Avatar
 
Join Date: Sep 2007
Location: Johnson City, TN
Posts: 12,150
Received 367 Likes on 213 Posts
Default

Changing everything gets expensive.

I'd want to take care inspecting the intermediate splined shaft and the intermediate plate before buying them.

Here are some of the parts:
Attached Images   
Old 05-29-2011, 12:12 AM
  #9  
IrishLegend
Three Wheelin'
 
IrishLegend's Avatar
 
Join Date: Jul 2009
Location: Austin, Texas
Posts: 1,267
Received 82 Likes on 34 Posts
Default

I made the video above when I thought it was coming from the engine area.
Does yours sound like mine?
Old 05-29-2011, 12:39 AM
  #10  
jcg928s
Instructor
Thread Starter
 
jcg928s's Avatar
 
Join Date: Apr 2011
Location: New Orleans, Louisiana
Posts: 134
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks for the pics Chris, I remember seeing your thread about that. I will look it up.

Irish, sounds a bit like that. I snuck under the car and its definately coming from the back of the motor. Was that a Throw out bearing?
Old 05-29-2011, 01:03 AM
  #11  
WallyP

Rennlist Member
Rennlist Site Sponsor

 
WallyP's Avatar
 
Join Date: Jun 2001
Location: Acworth, GA
Posts: 6,469
Likes: 0
Received 11 Likes on 11 Posts
Default

Might be cheap (about $15) and easy to fix the noise - could be the nylon cup on the top of the clutch release arm. David says that he can change it from the top in just a few minutes - I haven't tried it.

The shift linkage is simple - you just need to see if the problem is the front shift cup, the shift lever bushings, the rear coupling, or something loose.
Old 05-29-2011, 01:04 AM
  #12  
IrishLegend
Three Wheelin'
 
IrishLegend's Avatar
 
Join Date: Jul 2009
Location: Austin, Texas
Posts: 1,267
Received 82 Likes on 34 Posts
Default

Don't know. Mark R. And I are going to start working on it probably pretty soon.
If I drive it for 25 minutes or so the sound goes away? I need to take care of it soon so I can move on to the A/C.
Old 05-29-2011, 05:04 AM
  #13  
Mike Frye
Craic Head
Lifetime Rennlist
Member
 
Mike Frye's Avatar
 
Join Date: Sep 2006
Location: Jersey Shore, USA
Posts: 8,795
Likes: 0
Received 5 Likes on 3 Posts
Default

Originally Posted by jcg928s
Hey guys,

Well the squeak with the clutch pedal is now a squeak all the time at idle. It stops when I press the clutch pedal. As soon as it started doing this, I pulled it in the garage and it wont get started again until I do a clutch job.

Question is, what else should I replace? The shifter moves about a half an inch front and back before moving the gears in the transmission. Is there a bushing or something I should replace while I am doing the job? I would like her to have a tight precise shift again, ya know. I mean, it shifts fine, but just a little loose.

Heres the list of things I was thinking about:

Throw out bearing
Pressure plate
Disks (If they are bad)
Pilot Bearing

and whatever else I should replace?

Thanks guys.
With my car my theory has been: If it's a wear item and I'm anywhere near it, it gets replaced. My car is a hobby for me and I want to have new parts wherever possible, especially the wear items so if I can reach it or have to move it while I'm in there and it hasn't been replaced, I do it.

You may have a minor issue but it sounds like you're describing what mine was doing and all of my research on here indicated it was a clutch bearing. (no sound since then).

I got the whole package and went to work. Actually I didn't replace the intermediate shaft as that looked fine.

For the shifting I can attest to the fact that until you replace all of the bushings in the entire linkage assembly, you won't know how good shifting can be. Also (going with my earlier theory) the bushings are likely the same age so they are all probably due.

So that's:
Upper release arm ball cup
New forward shift ball cup
Rear shift coupler

I haven't done any of the bushings in my actual shifter, but I hear that can make things smoother/tighter as well.
Old 05-29-2011, 05:58 AM
  #14  
Lizard928
Nordschleife Master
 
Lizard928's Avatar
 
Join Date: Apr 2003
Location: Abbotsford B.C.
Posts: 9,600
Received 34 Likes on 25 Posts
Default

If it goes away with that little amount of movement then replace the clutch fork arm bushing at the top.

If it is still there, then your throw out bearing is going.
Old 05-29-2011, 11:25 AM
  #15  
SeanR
Rennlist Member
 
SeanR's Avatar
 
Join Date: Apr 2006
Posts: 35,700
Received 501 Likes on 267 Posts
Default

I had one the other day that another shop had diagnosed as the upper ball cup being worn out and he brought it over. Took the air box off and the ball cup was basically new. Took the bottom bell housing off and one peek showed it was the shaft sleeve. The bolts had backed out and the sleeve was just sitting on the intermediate shaft.

It wasn't making a noise all the time.


Quick Reply: Mmerlin, Landseer, Mike Frye ***Think I have the solution***



All times are GMT -3. The time now is 11:31 PM.