rottyjohn Posted December 26, 2012 Share Posted December 26, 2012 Does anyone have the part number for the nut that is supposed to be replaced with the final drive fluid? 2006 BMW R1200RT. Thanks, John Link to comment
dirtrider Posted December 26, 2012 Share Posted December 26, 2012 Morning John The nut P/N is 07119904670 FLANGE NUT, torque to 43nm. Personally I usually don't replace those nuts unless damaged. I just use Loc-Tite on the threads at re-assembly. That nut is a torque prevailing nut therefore the request for replacement. Link to comment
Lemans Posted December 26, 2012 Share Posted December 26, 2012 Hey DR...this link is a good reference for fastener terminology but their explanation of "torque prevailing" is not entirely clear to me. Could you please elaborate? If I replaced the nut without threadlock but properly torqued, am I at risk? http://www.boltscience.com/pages/glossary.htm Link to comment
dirtrider Posted December 26, 2012 Share Posted December 26, 2012 If I replaced the nut without threadlock but properly torqued, am I at risk? Afternoon Lemans Probably not but depending on the amount of (original) nut thread deformation remaining your torque is probably a bit on the high side. A torque prevailing nut is basically automotive talk for a "lock nut" that is torquable (sp). The lock nut is deformable & consistent enough to impart about the same torque "increase" from nut to nut. If you are worried about the overall torque, or the nut coming loose, just put a dab of Loc-Tite 290 (wicking) on the exposed threads next to the nut. That 290 will wick in between the nut & bolt & make very firm retention. Link to comment
Lemans Posted December 26, 2012 Share Posted December 26, 2012 Thanks DR...as always you are a great resource and an invaluable asset to this board. Link to comment
rottyjohn Posted December 26, 2012 Author Share Posted December 26, 2012 Thanks DR... I really appreciate it. John Link to comment
lkchris Posted December 28, 2012 Share Posted December 28, 2012 This bolt is NOT used to clamp the components together, as there must be rotation. Therefore the torque figure given relates to a new nut only and is designed with the assumption some rotation of the arm versus the drive housing remains. Application of thread locker is basically equivalent to application of anti-seize or oil, that is the torque figure achieved is inaccurate due to the added lubrication and the system will be overtightened. Link to comment
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