more about the final drive (does it ever end?) - BMW Luxury Touring Community
 
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post #1 of 7 Old Jul 1st, 2014, 2:17 pm Thread Starter
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more about the final drive (does it ever end?)

My drive went TU recently leaving me baking in the Western Washington sun..(Yay, Sun!!) I got the bike to a safe place, removed the drive, took it home, and proceeded to dismantle it to view the destruction....Problem occurred when I tried to remove the brake rotor...I had consulted my clymers first, and it said to heat the fastener to 250 degrees with a heat gun....I don't have a thermometer but I figured 250 was a bunch. I heated the screw, and tried to turn it...no joy..I heated it again, still no joy, got out the torch, heated the crap out of it, got 1 turn before it quit turning, then I ended up stripping the hex opening on the screw...crap! I tried to get the other screw out, a little heat, a little torq, pop, unscrewed just like it should...I have now drilled out the head on the other one, and tried to heat it, use a vise grip, prayed over it using terminology found in devil worship!!! lol! No joy, What is holding it? I could see that the other screw had some type of loctite on it, and assumed the heating process was to loosen or soften the loctite. I guess I'll have to take it to a machine shop to get it removed. Any thoughts appreciated...
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RICH CANNON
2000 K1200LT "a great ride"
2002 GL1800 powerful, but boring..(gone)
1979 XS1100 (gone)
1986 VT500 Ascot (gone)
1972 Honda 500-4 (gone)
1961 Lambretta (way gone)
1962 Allstate Compact (gone but not forgotten)
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post #2 of 7 Old Jul 1st, 2014, 6:28 pm
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Re: more about the final drive (does it ever end?)

You can just leave it alone as the only reason those are there is to hold the rotor on when you remove the wheel. One is sufficient. With the wheel on you have five big bolts holding the rotor.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
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Have ridden a Motorcycle in all 48
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post #3 of 7 Old Jul 1st, 2014, 6:50 pm
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Re: more about the final drive (does it ever end?)

Quote:
Originally Posted by casualemt View Post
My drive went TU recently leaving me baking in the Western Washington sun..(Yay, Sun!!) I got the bike to a safe place, removed the drive, took it home, and proceeded to dismantle it to view the destruction....Problem occurred when I tried to remove the brake rotor...I had consulted my clymers first, and it said to heat the fastener to 250 degrees with a heat gun....I don't have a thermometer but I figured 250 was a bunch. I heated the screw, and tried to turn it...no joy..I heated it again, still no joy, got out the torch, heated the crap out of it, got 1 turn before it quit turning, then I ended up stripping the hex opening on the screw...crap! I tried to get the other screw out, a little heat, a little torq, pop, unscrewed just like it should...I have now drilled out the head on the other one, and tried to heat it, use a vise grip, prayed over it using terminology found in devil worship!!! lol! No joy, What is holding it? I could see that the other screw had some type of loctite on it, and assumed the heating process was to loosen or soften the loctite. I guess I'll have to take it to a machine shop to get it removed. Any thoughts appreciated...
Go with JZ's suggestion. Or if you have to have it out place a nut over the offending remnant and weld the nut to the stub, let it cool and back it out.

Robert

They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.
Benjamin Franklin (1706 - 1790)


2000 K1200LT "Latifah"
1994 R1100RSL (wife's)
1981 R80GS
1976 R90S
1965 R80/2 Frankenbike (wife's)
2001 Bunkhouse LX (given to son)
2011 Bunkhouse Queen

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post #4 of 7 Old Jul 1st, 2014, 7:12 pm
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Re: more about the final drive (does it ever end?)

I have removed dozens of those screws & have never used any heat. I just use slow steady pressure with a T-Handle & a good Snap-On socket. I remove 4 of them last Sunday.

Dave Selvig
2004 Black LT
2000 Canon Red LT



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post #5 of 7 Old Jul 1st, 2014, 8:07 pm
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Re: more about the final drive (does it ever end?)

Bit late now I guess, but I've seen that after heating up the screw to soften the locktite next spray some coolant spray just on the head.
That might shrink the screw a bit too.

Jenna: Ocean Blue '06
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post #6 of 7 Old Jul 1st, 2014, 8:33 pm
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Re: more about the final drive (does it ever end?)

The countersunk head screws are crap quality, easy to have the allen key slip in the hex. If you are insistent on replaceing them, go for Unbarako brand, grade 10.9 or similar. Install using some anti-sieze compound rather than Loctite. As JZ stated though, they really arent necessary, the wheel clamps the disc rotor in place.

Dennis
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post #7 of 7 Old Jul 1st, 2014, 9:04 pm Thread Starter
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Re: more about the final drive (does it ever end?)

Sounds good to me, I know the rotors on most cars these days don't even have a screw or bolt in them, just the wheel lugs to hold them on, which does a pretty good job.
Thanks guys!

RICH CANNON
2000 K1200LT "a great ride"
2002 GL1800 powerful, but boring..(gone)
1979 XS1100 (gone)
1986 VT500 Ascot (gone)
1972 Honda 500-4 (gone)
1961 Lambretta (way gone)
1962 Allstate Compact (gone but not forgotten)
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