I see this too often

[Cabriolet]

the giubo arrows alternate. so since the driveshaft and the transmission each have 3 flanges EACH flange gets an arrow pointing towards it. it's the little "V" on the giubo.

[JinormusJ]

There are 6 small arrow notches that alternate direction, meaning, if your looking at an arrow that points left, the next one will point right and vice versa.

That being said; the arrows ALWAYS point to a flange and NEVER points to a nut. Essentially, there are many ways of wording it, but the arrows will always point to the flange/bolt head and never toward the threaded end of the bold/nut. Guibos are offset so that they are reinforced on the side that touch metal; putting it in backwards means the reinforcement is on the other side and will cause premature guibo failure

[///M42 sport]

I see

[Cabriolet]

updated the first post.

[brianao34]

Time to recheck...

[YosemiteSam]

I'm just saying this to help alleviate future confusion. In your initial post you quote JinormousJ saying that the arrows always point towards a flange and never towards a nut, then you post one picture of an incorrectly installed guibo and one of a correctly installed one. On both the correct and incorrect installation the arrow is pointing towards a nut, it's just that on the correct installation it is pointing towards a flange and a nut. You should either remove the part about pointing at a nut altogether, or if that really is important you should find a picture of one where the arrows are not pointing to nuts at all.

[txtorquemade]

Bottom line here, if you can't tell from the above pics whats right, probably best you don't do the job.

[e30vert]

Great information! Was unaware myself and I can see how this could cause multiple scratch your head moments if installed incorrectly over and over again.

Might as well add torque specs to the nuts in the post for added info.

Good stuff! This gives me inspiration to change my Giubo since it has not been done in approx 140 K miles. Might as well do the CSB at the same time I imagine.

[JinormusJ]

Okay, I think it's time for final clarification; I haven't changed a guibo in a while so my information, while correct, isnt entirely clarified

When dealing with what makes initial contact (what is making contact with the Guibo, the flange, or the bolt head/nut)
The arrows on the guibo always point to contact on a FLANGE
It should never point to contact on a NUT


I think that covers all bases; Eric, you can go ahead and requote this if you'd like

[Cabriolet]

Might as well add torque specs to the nuts in the post for added info.

there is no way to get a torque wrench in then when installing. so i go as tight as i can with 2 17mm wrenches.

Might as well do the CSB at the same time I imagine.

do not just replace the bearing. get the whole housing, since the rubber wears out too. kinda like doing a timing belt w/out doing a water pump. - the older part will fail you just after doing it.

Bottom line here, if you can't tell from the above pics whats right, probably best you don't do the job.

truth!
stop spitting hairs. the arrows all point towards the flanges. if they are installed any other way, it's installed wrong period.

[CabbE30]

Am I the only one that reads the directions that come with parts?
You can also tell by which parts of the giubo are reinforced.
Seems too easy to miss, but I guess its too easy to overlook also.
Sticky in the Driveline section I suppose?

[enigmaticdream]

Apparently people don't read their Bentley...

[AndrewBird]

Also to add, the nylon lock nuts should be replaced as well. They are technically only one time use and can come undone if reused.

[e30vert]

Am I the only one that reads the directions that come with parts?
You can also tell by which parts of the giubo are reinforced.
Seems too easy to miss, but I guess its too easy to overlook also.
Sticky in the Driveline section I suppose?

I like to read the pictures! <joking> . In all seriousness its good to have a reminder about how to do it the correct way.

do not just replace the bearing. get the whole housing, since the rubber wears out too. kinda like doing a timing belt w/out doing a water pump. - the older part will fail you just after doing it.

Good call Cab! Will go with that rationale!

[5Toes]

so 3 nuts are on tranny side and the other 3 are on the driveshaft side?

Just took a a driveshaft out 6 hours ago and all the nuts were on the tranny side :(