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DISCUSSION => General Topics => Topic started by: Zilla on March 25, 2008, 03:38:03 PM

Title: What is a hardy disc or joint disc
Post by: Zilla on March 25, 2008, 03:38:03 PM

Excuse my ignorance, I searched the site and and found nothing to this name, also check out oemparts.   Any ideas, of what its purpose is, thanks.

-E

Title: What is a hardy disc or joint disc
Post by: ten2doyle102 on March 25, 2008, 05:49:26 PM

i believe that it the coupling between the transmission output shaft and the driveshaft.  there shoud be 6 bolts going through it.

Title: What is a hardy disc or joint disc
Post by: oldtimer on March 26, 2008, 07:17:34 AM

http://www.realoem.com/bmw/showparts.do?model=AF93&mospid=47305&btnr=26_0009&hg=26&fg=10

If you are talking about Item 2 that's the thick rubber mounted between the transmission outfut flange and the drive shaft.  it acts a vibration absorber.

Title: What is a hardy disc or joint disc
Post by: Wise Old Dog on March 26, 2008, 07:35:36 AM

Guibo?

Title: What is a hardy disc or joint disc
Post by: swiss318is on March 26, 2008, 08:12:12 AM

yes, on the link above the number 2 is called a hardy-disc.. joint-disc is a similar word

Title: What is a hardy disc or joint disc
Post by: Zilla on March 29, 2008, 09:13:28 AM

Sweet i think thats what it is, because the mechanic i had taken it to told me that there was a vibration in the car due to that, is it hard to change for someone who doesn't have a garage, or access to a lift?

Title: What is a hardy disc or joint disc
Post by: Wise Old Dog on March 29, 2008, 10:00:58 AM

That is a Guibo. You have to drop the exhaust, underbody shield or panel. 6 bolts. You need a 17mm 6-point box end wrench. Use all new lock nuts, and make sure the arrow on the side of the guibo is pointing fwd. Tighten your bolts evenly, progressively,  and in a cross pattern.
If you don't get it right, you'll be doing it again. It will vibrate itself to pieces. I know from experience.
It can be done without a lift.
FCP Groton has a good price , so does a vendor on e-bay called joeltec (sp?)
Now is a good time to replace your center support bearing if it hasn't already been done.

Title: What is a hardy disc or joint disc
Post by: beegeezy on March 29, 2008, 11:44:39 AM

Ohh, I wasnt sure what he was talking about before. Never heard it called a "hardy" disc before. Usually called a guibo or flex disc.