throw out bearing

[harleytoprock]

Originally Posted by canadian

thanks Tom , trying to get back at car to take a picture, but while looking into inspection cover shouldn't T O bearing be near fingers? mine appears to slide forward 3 or 4 inches before coming in contact with fingers , the bearing body is long style.

How can the T O bearing be 3"-4 " away from the fingers? Sounds very wrong.

[canadian]

while bolting on pressure plate with aftermarket disc clutch fingers drawn in so deep that T O bearing had to travel full length to even touch fingers that were already compressed.

[Tom Wesenberg]

A new disc will have a much thicker lining than a worn disc and this will make the pressure plate fingers move in more. I've never heard of a disc that had too thick a lining.
How thick is the new disc?

BTW, I had to adjust the fingers on the last new pressure plate I installed. They weren't even with each other, and they were quite a bit off the 11/16" correct depth.

[canadian]

hey Tom , maybe i used a canadian expression , To Thick, the new disc is a good bit thicker than old used one , i don't have exact measurement on hand, disc was purchased from vendor in Calgary Alberta who markets Macs parts, i also noticed that the adjustment nuts were back until no thread was showing on screw, with 11/16 adjustment several threads are showing. i have two other plates and original discs and no threads showing on either of those two. i think in the end that the new disc is cheap and mass produced with no attention to detail....just to get job done

[MikeK]

Your replacement plate may be significantly thicker for a reason, and not necessarily a bad one.

Many plates after the 30's were made with Marcel carriers. Separate from the center hub torsion springs, a Marcel carrier adds a wavy flat spring plate under the friction material on one or both sides of the disc. This eliminates chatter and jerky engagement while providing a broad, gentle friction point feel.

Your old plate may have had only the hub springs and a solid riveted lining, or perhaps a single sided, thinner, or less aggressive Marcel design.

A Marcel carrier (wave spring under the friction material)
makes for a thicker plate.

[hardtimes]

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Hey MikeK,
Do you happen to have a 'Marcel' type disc which can fit/be used in A/B ? If so, would you please give me a part number

[Tom Wesenberg]

Originally Posted by hardtimes

Hey MikeK,
Do you happen to have a 'Marcel' type disc which can fit/be used in A/B ? If so, would you please give me a part number

That's the only style I see sold these days.

[MikeK]

Hardtimes, I have one with SMM73 on a box marked "Master Clutch". It is a single center Marcel with six center torsion springs captive on both sides. I bought six of them at Hershey several years ago, used five, and have only the one left, slated for a diaphragm PP behind a R2P now on my bench. I do not recall who the vendor was. If I could find discs equal in quality I would buy more. That number cross-ref's to APRA# CD688 but ordering one of those gets you the typical recent vendor trash with center torsion springs caged on one side only.

[hardtimes]

Hey Mike,
Thanks !
Too bad that that disc is not readily available. It appears to have the right stuff. And your use of it confirms that. I don't think that a lot of guys realize the importance of the 'captured' springs, and the problems that they prevent. That's what caught my attention.

[canadian]

hey rosella, you were the first with the KISS syndrome , Keep It Simple Stupid. and i thank you for that, i think that this forum is a wealth of knowledge , extremely professional but if you make a mistake , with terminology or description of a part or situation be prepared to be hit with insults and crap, i am up for that from both sides but i will be barred from side. TIMES 2, and you know who that is. anyway look on the map folks i am in Newfoundland Canada , drop by