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Old 09-14-2006, 08:24 AM   #1
jdiaz OP
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Urgent tool advice needed now

On the top of the fork on Monolever Airheads, there is a large hex nut that needs to be removed before the fork can be slid out of the triple clamp. I think this is a 36mm nut, but I'm 4300 miles from my bike right now and can't check.

A co-worker here in Sweden has offered to take me to the local Home Depot to look for said giant socket since they have metric everywhere, and they are only about $4.

If anyone remembers this size, I would appreciate it.
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Old 09-14-2006, 08:36 AM   #2
jdiaz OP
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Forget about it. My wife had a break in her day and measured the part for me.....41mm. I don't think I'll find a socket that big.
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Old 09-14-2006, 09:36 AM   #3
Wirespokes
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36mm

I just measured the one on my 86 R80G/S and it's 36mm.

I'd never heard of bmw using 41mm. Normally they go in even increments getting into those larger sizes.
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Old 09-14-2006, 09:49 AM   #4
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Quote:
Originally Posted by jdiaz
Forget about it. My wife had a break in her day and measured the part for me.....41mm. I don't think I'll find a socket that big.

Quote:
Originally Posted by tvrla
I just measured the one on my 86 R80G/S and it's 36mm.

I'd never heard of bmw using 41mm. Normally they go in even increments getting into those larger sizes.
Is this a classic case of women think'n something is bigger than it really is?
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Old 09-14-2006, 09:49 AM   #5
jtwind
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I've two monolever airheads and the top nut is 36MM on them. On my g /s there is only one I've found so far that will fit inbetween the handlebar clamps. I think it's a sears. JT
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Old 09-14-2006, 10:03 AM   #6
Middleweightboxer
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I found an impact socket in 36mm. There must be a lot of trucks with this size of lug. The BMW tool kit should have this tool, swingarm lock nut tool on the other end.
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Old 09-14-2006, 10:12 AM   #7
Wirespokes
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The problem with sockets, besides having to move the handlebars, is that they're made for nuts with more meat to them, not the thin ones used here. You have to grind down the bevelled edge of the socket to get a really good grip on the nut. Either that, or push down hard and absolutely even to make sure it doesn't slip off and bugger the nut. Same with an open end wrench. I found a really good one at a second hand store years back, but it's so nice I haven't been able bring myself to grind it flat.

Is this a classic case of women think'n something is bigger than it really is?

Wonder how she measured it?
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Old 09-14-2006, 10:18 AM   #8
AnnieGS
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Quote:
Originally Posted by jdiaz
Forget about it. My wife had a break in her day and measured the part for me.....41mm. I don't think I'll find a socket that big.
sounds kinda like she might have measured corner to corner.
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Old 09-14-2006, 11:39 AM   #9
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Hmm. She used my digital calipers and measured "as you would use a crescent wrench across the flats." Again, I'm talking about the threaded fastener that secures the top of the fork tube to the sheet metal triple clamp, not the steering stem nut.

My co-worker insisted we visit the store, so I bought a 38mm socket and a 41mm socket anyway. 3/4" drive!! These things are mammoth....I'll definitely be getting stopped at airport security tomorrow.
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Old 09-15-2006, 07:30 AM   #10
jellycow
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Quote:
Originally Posted by Middleweightboxer
The BMW tool kit should have this tool, swingarm lock nut tool on the other end.
Thats the one to use. Get a replacement at your local dealer or BMW parts supplier if you've lost yours somewhere down the years.
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Old 09-15-2006, 09:33 AM   #11
jtwind
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Both the fork top nuts and the steering top nut are 36mm on my bikes. That swingarm/fork wrench described earlier does work, it actually takes a considerable banging and sometimes is the best tool in a pinch. It can sneak in under the handlebars and over the fork top nut when other tools require you to remove the handlbars. JT
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Old 09-15-2006, 12:29 PM   #12
jdiaz OP
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I just got out of the limo from the airport, grabbed my caliper, and measured the nut on the '86 R65 instead of the '86 R80. 41mm.

I'll have to check the R80 later.
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Old 09-15-2006, 12:41 PM   #13
dlearl476
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Jon, any specific reason you want a socket? (like torque wrench) I can get you a really nice thin-line open end from WURTH or a cheezy took-kit quality wrench from my tool kit supplier.

btw, the bike is being shipped on monday, WOO HOO. I rode it in the Dolomites two weeks ago before going to the Italian GP.
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Old 09-15-2006, 12:47 PM   #14
jdiaz OP
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Quote:
Originally Posted by dlearl476
Jon, any specific reason you want a socket? (like torque wrench) I can get you a really nice thin-line open end from WURTH or a cheezy took-kit quality wrench from my tool kit supplier.
I thought I might want to torque them.

Quote:
btw, the bike is being shipped on monday, WOO HOO. I rode it in the Dolomites two weeks ago before going to the Italian GP.
Terrific. Is Gary handling the shipping (I know you already told me, but I've been awake since 1am Chicago-time).

jdiaz screwed with this post 09-15-2006 at 05:39 PM
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Old 09-15-2006, 01:03 PM   #15
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I needed this part, and went to sears and bought a socket. They had it on the shelf...
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