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How do I remove a rounded hex nut on my v-brake?
#1
Hi all, my v-brake badly needs replacing but to my horror I found the 5mm hex nut has rounded-off and I'm unable to remove this v-brake. What is the best way to solve this problem??

[Image: c43txogtxziyej38x68d.jpg]
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#2
(07-31-2012, 04:17 PM)d3v Wrote:  Hi all, my v-brake badly needs replacing but to my horror I found the 5mm hex nut has rounded-off and I'm unable to remove this v-brake. What is the best way to solve this problem??

[Image: c43txogtxziyej38x68d.jpg]

I would saw/file a slot across it and try and get it off with a big screwdriver.
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#3
Suggest first cleaning it than adding some penetrating oil. Let soak for a while. Try sticking a tightly fitted screwdriver into it, hammer lightly is OK. If it sticks out cut a slot in it like xerexes suggested. There are pastes you can put in there to help the Allan wrench get a bite. Ask at automotive shops.
If all fails you may have to use an easy out, again ask at automotive shops.
Or take it to a local dealer and let them do it. The tools would cost more than the fee.
Never Give Up!!!
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#4
(07-31-2012, 05:34 PM)GeorgeET Wrote:  Suggest first cleaning it than adding some penetrating oil. Let soak for a while. Try sticking a tightly fitted screwdriver into it, hammer lightly is OK. If it sticks out cut a slot in it like xerexes suggested. There are pastes you can put in there to help the Allan wrench get a bite. Ask at automotive shops.
If all fails you may have to use an easy out, again ask at automotive shops.
Or take it to a local dealer and let them do it. The tools would cost more than the fee.

Agree - George you are ahead of me again Smile
Nigel
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#5
I think that's the first. :-) But I always enjoy all the research links you provide.
Never Give Up!!!
  Reply
#6
If that fails use these BUT CAREFULLY!!!......
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#7
Ye the ole vise grip, unfortunately nothing to grab on that flush domed bolt. I suppose you can do some grinding or cutting to try to get a surface to bite.
Never Give Up!!!
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#8
Hey guys I finally got round to doing it by grinding two flats using my angle grinder and then simply unscrewed the bolt with a standard wrench - perfect.
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#9
(08-10-2012, 05:30 AM)d3v Wrote:  Hey guys I finally got round to doing it by grinding two flats using my angle grinder and then simply unscrewed the bolt with a standard wrench - perfect.

Thank goodness you solved it before I had to chime in. My typical solution to a stubborn part is to find a bigger hammer. Smile
Wheelies don't pop themselves. (from a QBP fortune cookie)
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#10
Lmao @ Rob!!!! Glad you got it!
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#11
Bill is a big Sawz-All fan. I like Dremel Tools. I can fit more bits in a little box. Wanna buy a hammer?
Wheelies don't pop themselves. (from a QBP fortune cookie)
  Reply
#12
(08-10-2012, 05:30 AM)d3v Wrote:  Hey guys I finally got round to doing it by grinding two flats using my angle grinder and then simply unscrewed the bolt with a standard wrench - perfect.

Yup, the 'ole angle grinder is one of my favorite tools to have in a shop. I have three. It's like a Dremel on steroids. But you have to be very careful with them. Smile

Steve
Junkyard Tools rescued from the junkyard!
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#13
Rob,
LMAO also, I have 5 different size hammers, luckily I haven't had to use the 2 1/2-pound or 5 pound sledges (as yet). Thank God for PB Blast, like tabasco, I use that **** on eveything.

Ride on, keep on riding
Riding on and on and on and on and on and on and on and on
Ride on, gonna have myself a good time - AC/DC

  Reply
#14
(08-16-2012, 08:58 PM)barefooter Wrote:  Rob,
LMAO also, I have 5 different size hammers, luckily I haven't had to use the 2 1/2-pound or 5 pound sledges (as yet). Thank God for PB Blast, like tabasco, I use that **** on eveything.

So... When are we all supposed to be at your place for dinner?
Wheelies don't pop themselves. (from a QBP fortune cookie)
  Reply
#15
(08-24-2012, 10:40 PM)RobAR Wrote:  
(08-16-2012, 08:58 PM)barefooter Wrote:  Rob,
LMAO also, I have 5 different size hammers, luckily I haven't had to use the 2 1/2-pound or 5 pound sledges (as yet). Thank God for PB Blast, like tabasco, I use that **** on eveything.

So... When are we all supposed to be at your place for dinner?

When I figure out how to make PB Blast taste good in a recipe!

Ride on, keep on riding
Riding on and on and on and on and on and on and on and on
Ride on, gonna have myself a good time - AC/DC

  Reply
#16
(08-16-2012, 08:58 PM)barefooter Wrote:  .... like tabasco, I use that **** on eveything.

So you buy it in gallon jugs Smile
http://countrystore.tabasco.com/TABASCO-Gallon-Jugs/productinfo/00052/
Nigel
  Reply
#17
I prefer Encona:

[Image: encona-WIOHPS.jpg]
  Reply
#18
I like the 80/90w because it has more body to it Big Grin . Then I spice it up with a dash of graphite (tastes just like salt and pepper). Then mix in some simple green! Wash it down with WD-40 Tongue. LMAO!!!!
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply


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