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#1 |
Senior Member
Join Date: Jul 2012
Location: Venice, FL
Posts: 648
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I'm getting a lot of clutch chatter and I wonder what other model A owners have found is the cause.
Les Andrews blue book lists ten possible causes and I'm wondering if there is a common cause. Thanks for your help. Al |
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#2 | |
Senior Member
Join Date: May 2010
Location: South California
Posts: 6,188
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Hey Al, Don't know what 'common cause' is, but some have different rear motor mounts. I have FAM rear mounts. I was getting a clutch chatter develop over a long period of time. I looked the rubber parts over on the mounts and decided that it was time for new rubber. Just changed out all rubber parts, which I got from Snyders. NO more chatter. The engine is sitting at the proper angle ...again,.. as compared to sagging, etc. Hope this gives someone help. Good luck. |
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#3 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
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Al,
Try taking off Gently in second, for a month. That cured Minervas' chatter. Let me know if that helps, if so, I'll explain WHY it helped. Bill Smooth
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"THE ASSISTANT GURU OF STUFF" |
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#4 | |
Senior Member
Join Date: May 2010
Location: South California
Posts: 6,188
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Back when, we used to use an apple tree trunk to achieve same results..only quicker. Burning viscous junk and rust off of clutch surfaces is a bandage fix, till you can find enough time/money to do it right sometime. Rear main oil leaks were/are common (cause for chatter) and may need to be fixed when in there also. |
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#5 |
Senior Member
Join Date: Sep 2017
Location: Albuquerque
Posts: 162
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#6 |
Senior Member
Join Date: Oct 2015
Location: Canada
Posts: 414
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#7 |
Senior Member
Join Date: May 2010
Location: Southern California
Posts: 3,139
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The clutch disk photo shown in the above post is an example of the poor quality clutch disk that flooded the Model A market a number of years ago. They are prone to failure as there is only the spring pressure of each spring holding it into the window. I have seen a number of them fail. If a spring becomes dislodged it will jam the clutch.
The attached article explains the situation. The article was written a few years ago and since then most of the better suppliers now stock the better clutch disk. Tom Endy |
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#8 |
Senior Member
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Before you take things apart, make sure you don't have a broken rear spring shakle.
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#9 | |
Senior Member
Join Date: Oct 2015
Location: Canada
Posts: 414
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Just curious... how can a broke rear spring shackle sound like a chattering clutch, you have really perked my curiosity here, and I know you have WAY more experience than I with A's, please elaborate |
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#10 |
BANNED
Join Date: Sep 2010
Location: Danville, CA
Posts: 1,557
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I was told by a friend from MN that an old farm cure was to run up to a tree or telephone pole and put it in second or third and let the clutch out ever so slowly. Not all the way because you want to burn off the oil a bit. It will smoke a bunch. Then let it sit for a spell to let things cool of before you drive it anywhere. Repeat as needed, but don't let it get too hot or it may warp something, then you'll have a bigger problem. Just get a cloud of smoke and quit. Often it takes a couple of times to cure the judder.
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#11 |
Senior Member
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On the broken shackle, I ran across this last year. As the rear axle wants to move forward or rearward, the broken shackle is still holding up the car, but lets the axle on that side to move just a little in a slip/stick fashion and fool you. I don't know why the shackle did not break all the way, but it just fell off when we unloaded it.
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#12 | |
Senior Member
Join Date: Mar 2017
Location: southern California
Posts: 725
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"That's my wild unsubstantiated guess, and I'm sticking to it regardless of the facts!" |
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#13 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
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On Minerva, I "think" the usual chatter caused HIGHS & LOWS in the lining material, the smooth 2nd gear take offs helped smooth them out level. ANYHOW, it worked for me.
Bill Smooth
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#14 |
Senior Member
Join Date: Jul 2012
Location: Venice, FL
Posts: 648
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Hi All,
Well I have some things to look at and try. Burning oil off the disk, rear shackles and taking off in second. I'm planning to change the rear end in the next couple months and I can check run out of flywheel and housing then but in the mean time there are things to try. Thanks to everyone for your suggestions. AL |
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#15 |
Senior Member
Join Date: May 2012
Location: Chillicothe, Missouri
Posts: 1,212
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Taking of in second helped mine 100%.
You need very little slip to get the Model A going in first. Some people like to really slip the clutch which is BAD!
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"If I asked people what they wanted they would have said faster horses." -Henry Ford "Primitive technology is not a design flaw" 1928 Ford Model A Roadster Pickup 1930 Gordon Smith Air Compressor 1941 Willy's Pickup 1960 Thunderbird-For Sale 1964 Buick Riviera 2x4 425 1965 Pontiac GTO, 455 Super Duty 2004 Dodge Ram SRT-10, V-10 Viper 1977 Charger Jet Boat,460 Ford,Jacuzzi Jet Front Engine Nostalgia Dragster,Supercharged 296 "Fullrace Flathead" Ford Engine Build up on DVD ask |
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#16 |
Member
Join Date: May 2010
Posts: 88
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In my opinion, the most common problem is exactly what Tom Endy said. A poor quality clutch disc. A poor quality or poorly adjusted pressure plate would be second, and the third most likely problem would be with the flywheel.
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#17 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
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See reply #3 for what fixed my bad clutch chatter.
https://www.fordbarn.com/forum/showt...aker+automatic |
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#18 |
Senior Member
Join Date: Jan 2011
Location: Colorado Springs
Posts: 868
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My "clutch chatter" wasn't the clutch at all. It was a quarter inch of play in the universal joint.
But, I was a good boy and replaced the flywheel, ring gear, clutch, pressure plate, universal joint, throwout bearing, and all the trimmings for the next fifty years of touring. ![]()
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Ray White |
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#19 |
Member
Join Date: Mar 2017
Location: Venice, Fl and Marcy, NY
Posts: 96
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I tried the tree method today. My wife thought I had finally gone over the edge, but it worked. Substantial improvement.
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#20 | |
Senior Member
Join Date: Jul 2012
Location: Venice, FL
Posts: 648
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That's interesting. I get a kind of rumble or vibration on deceleration that some have said could be caused by a bad universal joint. Thanks guys for all the info. I have a lot of things to check and hope to start in April. Al |
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