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Old 10-29-2012, 08:18 AM   #5
R100RT Mark OP
Gnarly Adventurer
Joined: Feb 2011
Location: Georgia, USA
Oddometer: 310
Originally Posted by boxermoose View Post
IIRC there are a couple o rings where the brake shaft goes thru the final drive housing - I'd kinda assume some gear oil (or mist) has migrated across the shaft and settled out on the inside of the drum. Mixed with brake dust it's look like paste
Originally Posted by hardwaregrrl View Post
+1 make sure to get the correct sized O rings for the brake cam. no substitutions. Get them from BMW.
OK, are we are talking about item #20 [part #35 21 1 457 605] GASKET RING - 12X1 on this diagram? There's only 1# called off. What is the function of the gasket ring #18 and might this be a source of "misting"?


Current - '74 TR5T : '93 R100R : '99 Gran Canyon : '06 ST3s
Past - Variety of British, French, Italian, Czechoslovakian, and German bikes from the '70s, '80s and '90s
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