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Carb slide top nut loose
- pmtremblay
- Posts: 86
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Carb slide top nut loose
Is this common? If so, is there a simple fix? Will loctite on the threads do anything? I'm assuming this is a hand-tighten only nut. I'm ready to order a new nut, but want to rule out a simpler fix first. Any ideas?
Photo is with the nut removed, it never came fully off while riding.
'66 R27
'22 G310R
- Micha
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Re: Carb slide top nut loose
R51/3 1952
Engine Nr. 529466
Re: Carb slide top nut loose
- vechorik1373
- Posts: 265
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Re: Carb slide top nut loose
Assuming the threads on both the carb body and the ring nut are in good/fair shape, you will find that a correct fitting O ring will go a long way in preventing the ring nut from unscrewing.
Technical Adviser, Former owner, Bench Mark Works
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- schrader7032
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Re: Carb slide top nut loose
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
- pmtremblay
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Re: Carb slide top nut loose
If there's an o ring that'll fit it'd probably add enough tension to stop the loosening. Anyone have a parts number or source?
I have a new nut on order, and some anti-vibe thread tape.
'66 R27
'22 G310R
Re: Carb slide top nut loose
I would not put any thread locker or anything with grit on those delicate threads.
Don
All on the road, going no where in particular in the Finger Lakes of New York
- vechorik1373
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Re: Carb slide top nut loose
Technical Adviser, Former owner, Bench Mark Works
662 312 2838 cell 9 am to 4pm CST PLEASE!
- pmtremblay
- Posts: 86
- Joined: Sat Feb 15, 2020 9:45 pm
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Re: Carb slide top nut loose
'66 R27
'22 G310R
- pmtremblay
- Posts: 86
- Joined: Sat Feb 15, 2020 9:45 pm
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Re: Carb slide top nut loose
Thanks to Vech my carb nut issue appears to be solved, the o-ring was the fix. I installed the o-ring, cleaned all the grimy threads really well, then coated them with a little grease as suggested by the Barrington book. No movement over a 25 mile test ride so I'm calling it fixed. I don't know why the o-ring isn't on the R27 carb diagram or fiche, but I know the knowledge on this forum is unmatched, literally better than the manual in this case.
I got a new knurled nut as well, but after inspecting the threads and test fitting against the original nut, I elected to stay with the old one. The new one doesn't feel as substantial as the old one, is shaped a little taller with shallower knurling, and is way too shiny.
Unrelated, but I checked my brake lights before heading out and discovered my rear switch had crumbled. That may have been the last of the original non-metal parts on the bike. New one on order.
Thanks again Vech!
'66 R27
'22 G310R