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Old 09-08-2010, 07:44 PM   #1
bubba_455
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Driveshaft problems

I've been experiencing a knocking noise coming from what I thought was the universal joint. I'm trying to buy the part but I'm told it's not a universal, it's a flex disc. Does anybody know the part name where the driveshaft connects to the transmission? Thanks in advance, I don't want to order a part I might not need.
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Old 09-08-2010, 08:57 PM   #2
simplycars
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it is called flex joint or guibo - brand zf (german made) part is around $80 + tax
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Old 09-08-2010, 09:00 PM   #3
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Quote:
Originally Posted by bubba_455 View Post
I've been experiencing a knocking noise coming from what I thought was the universal joint. I'm trying to buy the part but I'm told it's not a universal, it's a flex disc. Does anybody know the part name where the driveshaft connects to the transmission? Thanks in advance, I don't want to order a part I might not need.
UNIVERSAL JOINT and Flex Disk are the same
If you go to a dealership you need this part number:26111227410
but I think you can buy aftermarket and it's cheaper
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Old 09-09-2010, 12:39 PM   #4
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Originally Posted by Daneee View Post
UNIVERSAL JOINT and Flex Disk are the same
Most certainly they are not. A flex disc (guibo) is a chunk of rubber. A U joint is a mechanical piece with a cross bar and some circlips. Some e36 driveshafts have U joints on the diff end (come have CVs). All have a flex disc at the tranny end.
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Old 09-09-2010, 09:52 PM   #5
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Originally Posted by ScotcH View Post
Most certainly they are not. A flex disc (guibo) is a chunk of rubber. A U joint is a mechanical piece with a cross bar and some circlips. Some e36 driveshafts have U joints on the diff end (come have CVs). All have a flex disc at the tranny end.
yeah ,but if you take a look on realoem...:
UNIVERSAL JOINT
LK = bolt hole
LK=78MM/D=110MM
26111227410
$100.13

...and this part number is the flex disk...
I know witch one is the U joint and witch one is the flex disk on the drive shaft
just saw yesterday on realoem and I was surprised
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Old 09-28-2010, 09:04 AM   #6
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yeahhhh..... realoem must be wrong then.
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Old 09-28-2010, 09:24 AM   #7
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do your carrier bearing while you have the shaft out!
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Old 09-28-2010, 09:27 AM   #8
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In case anyone thinks that's a u joint as well , it's not! Its the center mount for the driveshaft. and +1 on richie_s999's comment. If your guibo goes it usually means the center mount is taking a beating now. I wonder which one affects the other like which one is the initial culprit. Probably the guibo right?
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Old 09-28-2010, 10:10 AM   #9
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In case anyone thinks that's a u joint as well , it's not! Its the center mount for the driveshaft. and +1 on richie_s999's comment. If your guibo goes it usually means the center mount is taking a beating now. I wonder which one affects the other like which one is the initial culprit. Probably the guibo right?
Like he said..
9/10 the vibration is the center hanger bearing (bmw referred name) squeak is usually the rear u joint. if the driveshaft vibrates on acceleration it's most likely the center hanger bearing. If the driveshaft knocks against the floor pan then you have a u-joint problem and probably some other serious issue.
But if one begins to fail it is only a matter of time before the guibo, u-joints and output shaft seal from the tranny begins to leak. If you let it go way to long you'll most likely be in for a rebuilt driveshaft and/or rebalanced. and a host of potentially other repairs. from my experience.
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Old 09-29-2010, 10:50 PM   #10
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Originally Posted by richie_s999 View Post
do your carrier bearing while you have the shaft out!
im still learning.. so what does his bearing do? n where is it located?? it might be the one im about to replace...
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Old 09-30-2010, 12:16 AM   #11
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im still learning.. so what does his bearing do? n where is it located?? it might be the one im about to replace...
The flex disk conects your trans output to the drive shaft

The carrier or hanger bearing is in the middle of your driveshaft and attaches to the top of the driveshaft tunnel to hold it secure
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Old 09-30-2010, 01:11 AM   #12
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im still learning.. so what does his bearing do? n where is it located?? it might be the one im about to replace...
Once you unbolt the drive shaft from the guibo(front) and from the diff you unbolt the center hanger bearing bracket from the floor body of the car and then you need to split the shaft to take the bearing off to replace it.
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2 IX's -sold and parts
2 325i 4 dr - sold
4 318is all white - sold and parts
1 87 325is red - parts
1 89 325i vert grey - parts
1 90 325is white - keepin
1 87 325i vert -red - keepin
latest addition 1 88-325is red - parts
latest addition 1 89-325i vert - white -fixin/sold
latest addition 1 92-318i vert - blue - parts
latest addition 1 87 325is blk - parts.

latest addition as of 2013-Gold 87-325is auto! it's a keeper!
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Old 09-30-2010, 07:04 PM   #13
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ok perfect thank you!
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