WARNING! ENGINE DAMAGE!
Posted: Tue May 27, 2008 2:31 am
I've used Jim Bade's (AKA Jim von Baden) DVD to guide my last two services and, while I found it very valuable, an error in it has resulted in damage to my sweet engine.
He shows the torque value for the rocker arm T45 (wrongly labeled T40) bolts to be 40 Nm. THIS IS WRONG!
I attempted to tighten mine to that figure, and my torque wrench (new Snap-on) never clicked. Instead the threads just went mushy on me. That's because the correct torque value is 20 Nm, not 40.
When I went to Jim's website to contact him, I found the slides he has posted about the procedure and, sure enough, he acknowledges the error, saying:
"NOTE: My DVD says 40nm for the three smaller bolts, that is wrong, it is 20nm. I will be sending out an e-mail to everyone I have sold a DVD to explaining this. New DVD's as of December 1, 2008 [sic] are now correct."
I never received an email and now must take my bike in to have helicoils installed.
Hopefully everyone here can learn from my expensive lesson. As the bumper sticker says, "Question Authority".
I've made a spreadsheet service chart that shows the intervals, the fastener sizes, fluid capacities, tolerances, and torque values. Now all I have do to is triple check it against the BMW DVD!
He shows the torque value for the rocker arm T45 (wrongly labeled T40) bolts to be 40 Nm. THIS IS WRONG!
I attempted to tighten mine to that figure, and my torque wrench (new Snap-on) never clicked. Instead the threads just went mushy on me. That's because the correct torque value is 20 Nm, not 40.
When I went to Jim's website to contact him, I found the slides he has posted about the procedure and, sure enough, he acknowledges the error, saying:
"NOTE: My DVD says 40nm for the three smaller bolts, that is wrong, it is 20nm. I will be sending out an e-mail to everyone I have sold a DVD to explaining this. New DVD's as of December 1, 2008 [sic] are now correct."
I never received an email and now must take my bike in to have helicoils installed.
Hopefully everyone here can learn from my expensive lesson. As the bumper sticker says, "Question Authority".
I've made a spreadsheet service chart that shows the intervals, the fastener sizes, fluid capacities, tolerances, and torque values. Now all I have do to is triple check it against the BMW DVD!