[snayko]

So, gonna do driveshaft flex disk replacement and in order to do that will need to remove exhaust.
What unexpected problem can arise during this job ?
What other parts better to replace as well, maybe some gaskets ?

I already bought guibo disk and bolts and nuts.
Do I need to use some exhaust sealant after I put exhaust back (some permatex or other ones ) ?

[Efthreeoh]

Originally Posted by snayko

So, gonna do driveshaft flex disk replacement and in order to do that will need to remove exhaust.
What unexpected problem can arise during this job ?
What other parts better to replace as well, maybe some gaskets ?

I already bought guibo disk and bolts and nuts.
Do I need to use some exhaust sealant after I put exhaust back (some permatex or other ones ) ?

I've done the exact same repair. I've had the drive shaft out at least 3 times on my '06 325i.

For a guibo replacement all you need to do is pull the drive shaft back a bit once you have the nuts removed. Note the orientation of the bolt heads and nuts; they are staggered.

For the exhaust, get 4 new exhaust flange nuts and two new gaskets. The exhaust is very heavy and unbalanced, so have a friend help with the removal. Also spend the money on a set of exhaust hanger removal pliers. Any auto parts store will have one. No sealant needed.

Good luck.

[snayko]

thanks for the tips

[Miller335]

Originally Posted by Efthreeoh

I've done the exact same repair. I've had the drive shaft out at least 3 times on my '06 325i.

For a guibo replacement all you need to do is pull the drive shaft back a bit one you have the nuts removed. Not the orientation of the bolt heads and nuts; they are staggered.

For the exhaust, get 4 new exhaust flange nuts and two new gaskets. The exhaust is very heavy and unbalanced, so have a friend help with the removal. Also spend the money on a set of exhaust hanger removal pliers. Any auto parts store will have one. No sealant needed.

Good luck.

Pretty much all of this, I used a jack at the back and front of the exhaust to lower/raise it with one person though.

Get some spray grease to lube up the hangers also, makes it easy to pop the exhaust back into the hangers.

[Foxes]

Well, just be careful of those little lambda sensors. They are apparently pretty sensitive. Had my car in the workshop for a diff refresh and they managed to scrap both my exhaust sensors. Now it's down to debate of who foots the bills, not cheap mind you.

[Efthreeoh]

Originally Posted by Miller335

Pretty much all of this, I used a jack at the back and front of the exhaust to lower/raise it with one person though.

Get some spray grease to lube up the hangers also, makes it easy to pop the exhaust back into the hangers.

I just use spit.

[Efthreeoh]

Originally Posted by Foxes

Well, just be careful of those little lambda sensors. They are apparently pretty sensitive. Had my car in the workshop for a diff refresh and they managed to scrap both my exhaust sensors. Now it's down to debate of who foots the bills, not cheap mind you.

You don't need to remove the lamda sensors (O2 sensors). to remove the exhaust from the cats back.

[Bmw_Crazy]

Make sure you mark the exact placement of the drive shaft they are balanced ...If not put back in the same place you can get vibrations issues

[bena1701]

Just curious-- why are you replacing the guibo? I'm slightly suspicious I might need to do mine soon and am curious about any "symptoms" you may have had. Thank you

What's the guibo on those look like? If the 1M version fits, it may be a good "upgrade" to consider:
http://www.1addicts.com/forums/showthread.php?t=869325

I'm running one currently with no issues. Not sure if it's a direct replacement on your model though.

[snayko]

Originally Posted by bena1701

Just curious-- why are you replacing the guibo? I'm slightly suspicious I might need to do mine soon and am curious about any "symptoms" you may have had. Thank you

I'm having 2-1 shift problem.
And before considering to replace mechatronic on my transmission, wanna try this first, because I've heart that it could be a problem. What's more I feel slight vibration while accelerating.

[snayko]

I've read a couple manuals on how to replace guibo. But still don't understand what
side it should be bolted to transmission and what direction of bolts.
I see markings (arrows ) : 3 of them in one direction and other 3 backwards.
In manual to my Flex Disk I see the picture that shows like 3 bolts pointing to one side (transmission flange) and other 3 pointing to driveshaft flange.

But in all manuals and videos I see that all bolts should be directed to one side ?
Can somebody clarify it ?

[lichtgelb]

Take a pic of the old one before you remove it. Once you get in there and see the old one it will make sense. I did this and the center support bearing on my E46. I assume it's about the same job on an E90.

[snayko]

replaced! Nothing difficult.
But I'm a little bit frustrated. Looks like transmission problem still present and there was no need to replace that disk cause it is still in good shape (no cracks and sings that it's worn out except the rubber is too flexible in comparison to new one - probably because of multiple heating cycles ) And that is strange because car is 9 years old and over 100k miles.

So next thing is transmission solenoids. Hope it will finally fix problem.

[Robimplicit]

Originally Posted by Efthreeoh

I've done the exact same repair. I've had the drive shaft out at least 3 times on my '06 325i.

For a guibo replacement all you need to do is pull the drive shaft back a bit once you have the nuts removed. Note the orientation of the bolt heads and nuts; they are staggered.

For the exhaust, get 4 new exhaust flange nuts and two new gaskets. The exhaust is very heavy and unbalanced, so have a friend help with the removal. Also spend the money on a set of exhaust hanger removal pliers. Any auto parts store will have one. No sealant needed.

Good luck.

I think I need to replace the flex disk on my 335d.
Just to confirm what Efthreeoh said above, if replacing the flex disk only, I can undo the nuts/bolts and pry back the driveshaft a bit to get the old disk out and the new disk in?
I want be sure there is no need to loosen the center support bracket or undo anything else on the drive shaft. That is, with the bolts out of the disk, there will be enough slack to clear the disk? Thanks.