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Re: What's going on with my clutch? [Re: gss] #2550847
09/17/18 12:05 AM
09/17/18 12:05 AM
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Freeport IL USA
poorboy Offline
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Put a couple of washers on each bolt that is the correct size for the trans bolts between the bell and the trans and see if you can then move the clutch disc.
It sounds to me like the clutch disc is hanging up on the trans input splines or the shaft is bottoming out on the crank. Gene

Re: What's going on with my clutch? [Re: gss] #2551564
09/18/18 04:25 PM
09/18/18 04:25 PM
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70HemiGTX Offline
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Sounds like your clutch plate is stuck to your flywheel from sitting. I have had this happen in the Challenger I had years ago. It sat for a few months and the clutch plate stuck itself fast to the flywheel.

Put the car in 4th gear, push the clutch pedal all the way to the floor, and hit the starter. It should pop it loose. You may have to rock the car a few times with the starter. Keep the clutch pedal depressed while you rock the car. Also let the car settle to a stop before you hit the starter again.

If not, put the car on jack stands and remove the inspection cover. Have someone depress the clutch pedal all the way to the foor and use a thin piece of aluminum (.030 or so) and try to slide it between the clutch and flywheel.

You may also just tap on the edge of the clutch disc lightly with a hammer and screwdriver (a broad flat one) while the clutch pedal is depressed. It should pop loose.

Re: What's going on with my clutch? [Re: 70HemiGTX] #2551578
09/18/18 04:58 PM
09/18/18 04:58 PM
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GomangoCuda Offline
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Originally Posted By 70HemiGTX
Sounds like your clutch plate is stuck to your flywheel from sitting. I have had this happen in the Challenger I had years ago. It sat for a few months and the clutch plate stuck itself fast to the flywheel.

Put the car in 4th gear, push the clutch pedal all the way to the floor, and hit the starter. It should pop it loose. You may have to rock the car a few times with the starter. Keep the clutch pedal depressed while you rock the car. Also let the car settle to a stop before you hit the starter again.

If not, put the car on jack stands and remove the inspection cover. Have someone depress the clutch pedal all the way to the foor and use a thin piece of aluminum (.030 or so) and try to slide it between the clutch and flywheel.

You may also just tap on the edge of the clutch disc lightly with a hammer and screwdriver (a broad flat one) while the clutch pedal is depressed. It should pop loose.


From the original posters first post.
Quote:
With the back tires off the ground and the clutch disengaged in 4th gear, I can see the clutch disc spin freely when someone turns the back tires. I have a good view of the throwout bearing and that seems fine.

Doesn't sound like the disc is stuck to the flywheel.


In theory, there is no difference between theory and practice. In practice, there is.
Re: What's going on with my clutch? [Re: GomangoCuda] #2551708
09/18/18 10:50 PM
09/18/18 10:50 PM
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70HemiGTX Offline
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Originally Posted By GomangoCuda
Originally Posted By 70HemiGTX
Sounds like your clutch plate is stuck to your flywheel from sitting. I have had this happen in the Challenger I had years ago. It sat for a few months and the clutch plate stuck itself fast to the flywheel.

Put the car in 4th gear, push the clutch pedal all the way to the floor, and hit the starter. It should pop it loose. You may have to rock the car a few times with the starter. Keep the clutch pedal depressed while you rock the car. Also let the car settle to a stop before you hit the starter again.

If not, put the car on jack stands and remove the inspection cover. Have someone depress the clutch pedal all the way to the foor and use a thin piece of aluminum (.030 or so) and try to slide it between the clutch and flywheel.

You may also just tap on the edge of the clutch disc lightly with a hammer and screwdriver (a broad flat one) while the clutch pedal is depressed. It should pop loose.


From the original posters first post.
Quote:
With the back tires off the ground and the clutch disengaged in 4th gear, I can see the clutch disc spin freely when someone turns the back tires. I have a good view of the throwout bearing and that seems fine.

Doesn't sound like the disc is stuck to the flywheel.


Sorry, I was not reading that correctly. Yes there is a different problem.

Re: What's going on with my clutch? [Re: 70HemiGTX] #2552588
09/20/18 11:17 PM
09/20/18 11:17 PM
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I checked the gap between the disc and PP in all 3 openings in the PP. It was about .070" everywhere I could check it. I am unable to get a feeler between the disc and flywheel anywhere. The disc comes off the flywheel briefly when the clutch pedal is pushed but then goes right back to the flywheel. When the clutch pedal is released, the disc again comes off the flywheel briefly before the PP pushes it against the flywheel.

I don't have a great explanation for this. If the disc splines were seized, it wouldn't come off the flywheel at all. If the input shaft was too long, the disc would still slide on the splines so it wouldn't stay tight to the flywheel. confused

Re: What's going on with my clutch? [Re: gss] #2552682
09/21/18 02:16 AM
09/21/18 02:16 AM
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GomangoCuda Offline
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Pressure plate fingers are pushing on disc hub? shruggy


In theory, there is no difference between theory and practice. In practice, there is.
Re: What's going on with my clutch? [Re: gss] #2552953
09/21/18 05:18 PM
09/21/18 05:18 PM
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Posts: 25,722
Rio Linda, CA
John_Kunkel Offline
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Originally Posted By gss

I don't have a great explanation for this. If the disc splines were seized, it wouldn't come off the flywheel at all.


There is a certain amount of flexibility in the disc center hub. I don't believe the splines are "seized" but might be too tight on the splines. With the pedal depressed, you should be able to pry the disc away from the flywheel surface.

I would pull the trans and apply some spline lubricant to the splines before reinstalling.

Spline Lube.jpg

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Re: What's going on with my clutch? [Re: GomangoCuda] #2552958
09/21/18 05:26 PM
09/21/18 05:26 PM
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Rio Linda, CA
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Originally Posted By GomangoCuda
Pressure plate fingers are pushing on disc hub? shruggy


That's worth checking too, seen it happen. Instead of fully depressing the pedal, ease up on the pedal a little to see if it frees the disc.


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Re: What's going on with my clutch? [Re: John_Kunkel] #2553932
09/24/18 01:26 AM
09/24/18 01:26 AM
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gss Offline OP
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My son and I took the trans out. The input shaft has plenty of room. Probably 1/2" to spare. Pilot bearing looks good. Looks like the bell has to come off too. Gotta be something wrong with the disc. down

At least we can fix some leaks while it is out. up

Re: What's going on with my clutch? [Re: GomangoCuda] #2558726
10/04/18 01:46 AM
10/04/18 01:46 AM
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Originally Posted By GomangoCuda
Pressure plate fingers are pushing on disc hub? shruggy


That's what it turned out to be. Off to the clutch shop tomorrow.
drive

Re: What's going on with my clutch? [Re: gss] #2558957
10/04/18 04:21 PM
10/04/18 04:21 PM
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Rio Linda, CA
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Why not just install a pedal stop? A block of wood taped to the pedal where it contacts the floor.


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Re: What's going on with my clutch? [Re: gss] #2559070
10/04/18 09:08 PM
10/04/18 09:08 PM
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South San Francisco, Ca
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Originally Posted By gss
Originally Posted By GomangoCuda
Pressure plate fingers are pushing on disc hub? shruggy


That's what it turned out to be. Off to the clutch shop tomorrow.
drive

What clutch are you getting? I hope I don't have that problem. I had Mcleod rebuild my Pressure Plate. Haven't installed it yet.

Last edited by 70sixpkRT; 10/04/18 11:02 PM.

[img]http://www.imgur.com/hxlGUJt.gif[/img]
4-speed
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13.01 @107.93 with street tires (not hooking up)
Re: What's going on with my clutch? [Re: 70sixpkrt] #2559491
10/05/18 03:59 PM
10/05/18 03:59 PM
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Rio Linda, CA
John_Kunkel Offline
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I'm surprised that this didn't cause a noticeable noise, since it originally happened "while the car is running". Every time I've seen this happen the fingers contacting the disc made a loud clanking sound.

My experience with this has been with hydraulic clutch setups where the MC diameter is too large and makes the TO bearing travel too far.


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Re: What's going on with my clutch? [Re: John_Kunkel] #2559753
10/06/18 06:34 AM
10/06/18 06:34 AM
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Guitar Jones Offline
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Originally Posted By John_Kunkel
Why not just install a pedal stop? A block of wood taped to the pedal where it contacts the floor.


Why not just adjust it to have more free play? Then it wouldn't push the release bearing to far. I didn't see where he said how much pedal free play it has or anyone ask about it.


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Re: What's going on with my clutch? [Re: Guitar Jones] #2560000
10/06/18 06:29 PM
10/06/18 06:29 PM
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Rio Linda, CA
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Too much free play in the pedal will cause the over-center spring to prevent pedal return.


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Re: What's going on with my clutch? [Re: John_Kunkel] #2560122
10/06/18 10:27 PM
10/06/18 10:27 PM
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Guitar Jones Offline
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But we don't even know how much there is or how much adjustment is there. It could be a simple adjustment would fix it.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: What's going on with my clutch? [Re: Guitar Jones] #2560646
10/08/18 12:46 AM
10/08/18 12:46 AM
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gss Offline OP
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I started out with what I thought was way too much free play and then adjusted some of it out to make sure the clutch was disengaging. I didn't measure it but I would guess it was 4-5 inches initially, enough so the pedal wouldn't return all the way. The clutch shop says the clutch is fine. I will try to get it back in this week but I need to go through the transmission first.

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