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The four transmission output flange 10 mm 12 point bolts (& lockwashers?)
For: BMW Airhead Motorcycles
© Copyright 2018, R. Fleischer
Background and History:
The earliest bolts for the /2 & the Airheads universal joints were used with steel split-type lock-washers, & were not torqued as tightly as the later non-lock-washered ones (20-22 footpounds was generally used, but there were some even lower specifications quite early-on). All these early lesser-torqued bolts would not have stretched, unless considerably over-tightened. If you greatly over-torqued the bolts ...considerably beyond 30 ftlbs I think ...you might even break them or damage the flange threads area, besides stretching threads.
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