How do I remove a rounded hex nut on my v-brake?

[d3v]

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??

[xerxes]

(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??

I would saw/file a slot across it and try and get it off with a big screwdriver.

[GeorgeET]

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.

[nfmisso]

(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

[GeorgeET]

I think that's the first. :-) But I always enjoy all the research links you provide.

[Bill]

If that fails use these BUT CAREFULLY!!!......

[GeorgeET]

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.

[d3v]

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.

[RobAR]

(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.

[Bill]

Lmao @ Rob!!!! Glad you got it!

[RobAR]

Bill is a big Sawz-All fan. I like Dremel Tools. I can fit more bits in a little box. Wanna buy a hammer?

[KC-Steve]

(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.

Steve

[barefooter]

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.

[RobAR]

(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?

[barefooter]

(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!

[nfmisso]

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

So you buy it in gallon jugs
http://countrystore.tabasco.com/TABASCO-Gallon-Jugs/productinfo/00052/

[xerxes]

I prefer Encona:

[Bill]

I like the 80/90w because it has more body to it . 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 . LMAO!!!!