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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N47 and N57 Turbodiesel Engine / Drivetrain / Exhaust Modifications > Transfer Case Output Flange Failure, Cause Analysis, Prevention, and Repair
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      08-20-2019, 01:50 PM   #111
SSportWagon
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Welp .. its at the Dealership as I type with the same symptoms as it presented 2 years ago @ 22K miles (and everyone else reports ..), now at 58K and am expecting a call back with bad xfer case diagnosis. Looks like the extended warranty I bought when it rolled out of CPO is going to pay off afterall ..

Car in question is an early build 2014 328d Wagon

I just spoke with my service advisor and asked him

- Do they automatically replace the Flex Disk Guibo as part of the Xfer case warranty work ? Will it be with the newer design, i.e. the older design is no longer in the supply chain ? He said he will check and report back ..

- Can they add Locktite to the output flange prior to install ? He said he will ask, but most likely not on their dime AND it would void any future warranty work on said part(s).

I then asked, since you will have replaced the Xfer case now twice, will this carry any etension to the warranty set to expire May 2020 ? to which he replied, No. So .. I hypothetically asked if this was April 2020 and you were fixing it AGAIN .. 1 month later in May I would be S.O.L. ? He fumbled and said they would probably push for a BMWNA good faith effort but basically.. yes.

So .. Do I spend the extra money - on me - while its all apart to have them take the spline off and pack it with Magic Goo and reinstall hoping to keep it alive?

I doubt it will fail again while under warranty and I do agree with the logic and analysis of OP Enabled "improvement".

I've done my fair share of failure analysis in my 30 years in the computer field as well as keeping my old muscle cars alive just as long .. although Im not a professional mechanic I can certainly see the validity of this fix and since I am resetting the clock, my gut instinct is to apply the patch fix given the next time it munches a Xfer case its on my dime.

.. BTW, this is my Wife's car and while she likes to drive (and basically does for a living = visiting nurse), she hardly pushes it aggressively. It almost thanks me for the once or twice a month I drive it and give it the spurs - it is an extremely fun car to drive and I often wish to have the opportunity to drive it more.

Crystal Blue Metallic pic taken this weekend (700 mile trip to in-laws lakehouse and back) to add to the Diesel Wagon Love in hopes of advice - THANKS !
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Last edited by SSportWagon; 08-20-2019 at 01:56 PM..
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      08-20-2019, 03:19 PM   #112
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If you have contact and /or good relationship with your service tech, I would have them take pics of the output flange, and getting the extra space between the flange and the shaft sealed will help prevent the vibration damage on the next one.
If you expect to be out of warranty by then, then it makes sense to get done.

That small of a modification wouldn't really change anything on the transfer case in terms of function. But yea, they simply want to cover their butts.
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      08-20-2019, 03:25 PM   #113
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Quote:
Originally Posted by SSportWagon View Post
Welp .. its at the Dealership as I type with the same symptoms as it presented 2 years ago @ 22K miles (and everyone else reports ..), now at 58K and am expecting a call back with bad xfer case diagnosis. Looks like the extended warranty I bought when it rolled out of CPO is going to pay off afterall ..

Car in question is an early build 2014 328d Wagon

I just spoke with my service advisor and asked him

- Do they automatically replace the Flex Disk Guibo as part of the Xfer case warranty work ? Will it be with the newer design, i.e. the older design is no longer in the supply chain ? He said he will check and report back ..

- Can they add Locktite to the output flange prior to install ? He said he will ask, but most likely not on their dime AND it would void any future warranty work on said part(s).
Oh no! Glad it's getting covered for you again.

I don't think the new giubo is part of the warranty work. That said, since they've got it apart if you were to buy the updated giubo you could try to work out a deal for them to install it (hopefully free, but otherwise less than doing the job later for sure). Even better would be if you could get them to advocate to BMWNA to get you that part and install it under goodwill since BMW officially went away from the old metal giubo.

LCI cars come with the rubber giubo, and thus far it doesn't look like there are any on the transfer case failure database, so you might be OK with just updating that part and not having the dealer loctite the flange to the shaft.
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      08-20-2019, 03:42 PM   #114
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Thanks much for the quick replies ..

I will ask for the udated Guibo (what an .. interesting? name) and pay for it if necessary and not installed on prior Xfer failure ..

Everything in my intuition (which I've learned to rely on and trust..) says to pack it with Locktite. If I were doing the job myself - given the info in this thread - I most certainly would.

I did form a relationship with the service mgr of my dealership from a previous mishap .. I may try and tap that resource tomorrow

.. as far as being covered again, well lets put that on "hold but hopeful" as they said it would be a couple of days before they get to it to even diag. it. S'ok .. I've got their new X2 loaner

Thanks again !
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      08-20-2019, 05:57 PM   #115
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Haha, Giubo is a portmanteau of the words giunto (Italian for joint) Boschi (the Italian guy credited for inventing it).


If any of you LCI guys with the 96mm giubo ever have your exhaust off or are doing something under there, please wiggle the output flange and look for movement between it and the output shaft. Any little movement is enough to amplify into bigger wear.

Officially the aluminum giubos were superseded because the aluminum would enlarge once the bushing inserts were wearing, causing the whole flex disk to explode when the aluminum cracks through.
There probably is a service bulletin about it. I don't think it's nearly enough to protect the flange, going to rubber, but the data seems to show it helps.
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      09-22-2019, 10:12 AM   #116
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Just completed this fix combined with rubber guibo on my new transfer case that was replaced ~8k miles ago. Flange and output shaft splines all looked good, we’ll see how this goes!
Thanks Enabled for the detailed break down

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      10-02-2019, 12:46 PM   #117
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I had to replace a transfer case in a Ford Aerostar once - cost about $1600 - a year and half later, (also well out of warranty, I believe) there was a recall that paid for the transfer case repair. I got a check and was I ever surprised. So, maybe there's hope! I've only owned my 2015 328d for less than a month and it seems wonderful but since slogging through these posts, I would have to say my apprehension is a little higher now than when I drove the car off the lot...
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      10-02-2019, 10:22 PM   #118
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I wouldn't hold my breath that they will do a recall on it. It would be nice, however.

These specific models are not that unreliable. A handful of users here have been very dedicated to figuring out the typical issues and integrating fixes or prevention methods.
If you're the dedicated type, I would recommend applying preventative methods for this quite simple (yet overlooked) issue for the transfer case.

I'm into this car for life. I don't think there's anything on it that scares me.
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