Page 3 of 3
Re: Driveshaftbolts
Posted: Mon Feb 14, 2022 5:08 pm
by gspd
I noticed that this bulletin states "-for U.S.A. and Canada only-".
Does that mean you don't have to replace those bolts if you're in Mexico (or Scotland) ?
Or is it because of the ridiculous lawsuits that can only happen in North America?
Re: Driveshaftbolts
Posted: Tue Feb 15, 2022 4:46 am
by jackonz
Yep, the Clymer manual is wrong and I have now pulled off the gator again and pulled them out, cleaned and used blue Loctite and torque to 40Nm.
I found on line info confirming that what you are all telling me and now the subframe is back on its time to start on the front end
Re: Driveshaftbolts
Posted: Tue Feb 15, 2022 6:23 am
by Rob Frankham
gspd wrote: ↑Mon Feb 14, 2022 5:08 pm
I noticed that this bulletin states "-for U.S.A. and Canada only-".
Does that mean you don't have to replace those bolts if you're in Mexico (or Scotland) ?
Or is it because of the ridiculous lawsuits that can only happen in North America?
BMW issued their service bulletins seperately for the US market and for the 'domestic and export' market... I'm not sure why. In most cases but not all, the bulletins have similar wording. Interestingly (and again I don't know why), the US bulletins often didn't come out for several months after the 'domestic' version. I don't have a copy of the 'domestic' version of this particular bulletin but I have little doubt that there was (is) one. What is also interesting (to me anyway) is that the US importer also issued it's own bulletins, repeating, sometimes enlarging and occasionally contradicting BMW's own.
Rob
Re: Driveshaftbolts
Posted: Tue Mar 01, 2022 11:18 am
by spo123
While I have replaced the short bolts.....I have ALSO, reused the short bolts.....with no issues.
ALWAYS, spotlessly CLEAN THREADS and Blue Locktite....correctly applied.
Re: Driveshaftbolts
Posted: Wed Mar 02, 2022 9:40 am
by Rob Frankham
Rob Frankham wrote: ↑Tue Feb 15, 2022 6:23 am
gspd wrote: ↑Mon Feb 14, 2022 5:08 pm
I noticed that this bulletin states "-for U.S.A. and Canada only-".
Does that mean you don't have to replace those bolts if you're in Mexico (or Scotland) ?
Or is it because of the ridiculous lawsuits that can only happen in North America?
BMW issued their service bulletins seperately for the US market and for the 'domestic and export' market... I'm not sure why. In most cases but not all, the bulletins have similar wording. Interestingly (and again I don't know why), the US bulletins often didn't come out for several months after the 'domestic' version. I don't have a copy of the 'domestic' version of this particular bulletin but I have little doubt that there was (is) one. What is also interesting (to me anyway) is that the US importer also issued it's own bulletins, repeating, sometimes enlarging and occasionally contradicting BMW's own.
Rob
To complete the above, here is the 'domestic' market version of the relavent Service Information:
- Bolts1.jpg (147.56 KiB) Viewed 1012 times
- Bolts2.jpg (36.88 KiB) Viewed 1012 times
Rob
Re: Driveshaftbolts
Posted: Wed Mar 02, 2022 11:06 am
by Kurt in S.A.
Interesting that is says the bolts cannot be reused, even if slightly over tightened. That suggests to me, or maybe I'm reading between the lines, that if the bolts are tightened to 29.5 ft-lbs or slightly under, that would not constitute being over tightened and could be reused. Over tightened suggests plastic deformation whereas tightening to spec would keep the bolt within its elastic qualities and thus could be used more than once.
Kurt in S.A.
Re: Driveshaftbolts
Posted: Wed Mar 02, 2022 7:47 pm
by Rob Frankham
What it says to me is that you re-use bolts there is a real chance that one or more will fail. If it does so, then the damage is likely to be pretty expensive. I gues it all depends if yer feeling lucky... Well are ya...
Rob