Too much off the flywheel? New clutch won't disengage

Tiny
SMARTADZE
  • MEMBER
  • GMC SONOMA
Hi
my son has an older (early-90's) GMC Sonoma 2WD. The clutch recently failed and we had it replaced at a good shop. The shop had to re-face the flywheel a good bit. Now the repair is complete, but the clutch will not disengage.
The shop says it is because too much material has been removed from the flywheel. They say that if only the slave cylinder push rod were longer, it would work fine. They want to charge us to remove eveything again and replace the flywheel, OR pay them to lengthen the slave cylinder push rod.
I see from another post that one possible cause might be them putting the clutch disk in backwards. Make sense?
Alternately, is there any harm in them lengthening the slave cylinder push rod?
Any advice appreciated. This is how I feel.


http://www.2carpros.com/forum/automotive_pictures/108499_Your_Ex_s_1.jpg

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Wednesday, October 17th, 2007 AT 6:38 PM

7 Replies

Tiny
CHEVYII
  • MEMBER
I have found some aftermarket clutches, pressure plates and throw out bearings were out of spec, ive been through this a dozen times, but if the flywheel was turned below spec it would cause this problem, either way you paid for the job to be done right and its not right so why pay? Its only fair and only my opinion, good luck

jim
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Wednesday, October 17th, 2007 AT 6:44 PM
Tiny
SMARTADZE
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Why pay? The mechanic says it costs more, or no car!
Is lengthening the push rod a legitimate fix? Will it work? Any harm in doing it?
He's sure as hell not going to remeove everything again, he says, unless we pay and replace it with a new flywheel. Big bucks, as you can imagine :-)
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Wednesday, October 17th, 2007 AT 7:17 PM
Tiny
CHEVYII
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I was assuming he had the flywheel tunred himself and used parts from his supplier, the push rod will work but is not reccomended at all, the point is to fix the problem at hand which you are paying for, I know at the dealer if we do something wrong we have to do it again for free? Keep us updated

jim
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Wednesday, October 17th, 2007 AT 9:22 PM
Tiny
SMARTADZE
  • MEMBER
Using your advice, we told him that he had skipped a step (measuring the flywheel after he cut it). It was not fair that we should pay for another new clutch job because he had decided to skip a critical measurement. After some thought, he agreed and will redo the job, but we will pay (his price) for a new flywheel.
This was after he had told us it would cost $100 to modify (lengthen) the slave push rod, but that it was a 'band-aid' and he could not guarantee the work (!). Now with the cost of a flywheel, it is back on him and we get a guaranteed job.
I will let you know how it turns out with the new flywheel. Thanks again.
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Friday, October 19th, 2007 AT 10:01 AM
Tiny
CHEVYII
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Good deal, sounds like a really fair guy, keep him in mind for the next big job
let me know how the repair goes, and im glad we could help solve the problem and save you undue labor costs

jim
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Friday, October 19th, 2007 AT 10:30 AM
Tiny
SMARTADZE
  • MEMBER
All's well that ends well. The new flywheel completely cured the disengagement problem. I'm actually amazed that a few micro-cuts on a sound-looking flywheel would put the entire clutch out of it's disengagement range. I come from the era of the old Chevy bell-crank linkage, and even with mis-matched parts, a few turns on the pushrod would make things right (until the too-thin flywheel blew up, that is :-)
Anyway. the shop 'ate' the labor to re-do the job, but charged us the max for the new flywheel. I'm satisfied, however, because I know the job is right and is guaranteed. I'm sure my son will find new and imaginative ways to trash the truck, but for now at least the clutch is A-OK :-) PS: he paid for all this.
Couldn't have done it without you all. Thanks for the help.


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Tuesday, October 23rd, 2007 AT 9:57 AM
Tiny
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No prob, good luck

jim
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Tuesday, October 23rd, 2007 AT 10:02 AM

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