Search found 6 matches

by jimmyC86
Tue May 26, 2020 3:23 pm
Forum: Post 1970 Airheads
Topic: Rear drive stiffness / binding
Replies: 13
Views: 2429

Re: Rear drive stiffness / binding

10-4. I’ll be flipping a coin on investing in the tools or shipping to Max BMW for pro service. Likely the latter
by jimmyC86
Tue May 26, 2020 11:52 am
Forum: Post 1970 Airheads
Topic: Rear drive stiffness / binding
Replies: 13
Views: 2429

Re: Rear drive stiffness / binding

Thanks Rob I will try that. Yes the pinion rotates freely and smoothly without the ring gear...and with the ring gear as well. Just when torque applied it all binds By full rebuild I have done the following: complete disassembly and thorough cleaning of all parts; had main drive case powder coated; ...
by jimmyC86
Mon May 25, 2020 8:33 am
Forum: Post 1970 Airheads
Topic: Rear drive stiffness / binding
Replies: 13
Views: 2429

Re: Rear drive stiffness / binding

Thanks guys - I had watched that video and while a good overview - as Rob states it doesn’t go into clearance/shimming process. I did find a video that covers it in more depth, how to find the measurement without the BMW tools. But for starters, I tried tightening the cover with no shims in...even o...
by jimmyC86
Sun May 24, 2020 7:08 am
Forum: Post 1970 Airheads
Topic: Rear drive stiffness / binding
Replies: 13
Views: 2429

Re: Rear drive stiffness / binding

Well...Oops! Thank you for the guidance. First BMW but have restored several bikes. And as always, as soon as it seems things are moving right along...there is always a grand challenge.
by jimmyC86
Sat May 23, 2020 8:13 pm
Forum: Post 1970 Airheads
Topic: Rear drive stiffness / binding
Replies: 13
Views: 2429

Re: Rear drive stiffness / binding

Yeah that’s what I’m planning on jumping into. I just reused all the same shims that were in there but suspect I’m going to need more of this isn’t normal. My first BMW and picked it up not running so who knows what errors were made previously
by jimmyC86
Sat May 23, 2020 6:36 pm
Forum: Post 1970 Airheads
Topic: Rear drive stiffness / binding
Replies: 13
Views: 2429

Rear drive stiffness / binding

1984 R80RT....Hey guys - I just finished fully rebuilding the rear drive. Cleaned, new seals, gaskets etc. Everything lined up very nicely, teeth engaging smoothly. When I placed the drive cover on (without tightening the 8 bolts) I could hand-turn the pinion to engage and spin the final drive (part...