TRF Forums

It is currently Mon Jun 01, 2020 10:29 am

All times are UTC [ DST ]




Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 29 posts ]  Go to page Previous  1, 2, 3  Next
Author Message
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Sun Feb 27, 2011 9:09 am 
Offline
300 cc
User avatar

Joined: Fri Apr 03, 2009 12:43 pm
Posts: 625
Location: North Yorkshire
Drill the bolt out completely and fit a helicoil. The helicoil will give you a solid thread in the alloy casing and it work great.

_________________
http://www.nytrf.org.uk


Top
 Profile  
 
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Sun Feb 27, 2011 9:17 am 
Offline
Moderator
User avatar

Joined: Thu Apr 30, 2009 7:13 am
Posts: 1419
Location: East Angular
If you can't rescue the thread, I think you're better off with a Timesert than a Helicoil in this case. Helicoils apparently have a habit of unscrewing with the bolt but the Timeserts shouldn't.


Top
 Profile  
 
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Sun Feb 27, 2011 2:51 pm 
Offline
200 cc

Joined: Mon Apr 13, 2009 10:25 am
Posts: 464
KTMNICK wrote:
Help!!!!

Thought I would service the bike today before my ride out next weekend and I have done the most stupid thing ever!! :oops:

I have a ktm400exc and iv snapped the head off one of the bolts holding in the first oil filter!!! Done anyone know of anyone who could help me, currently the bikes leaking a slight drop of oil as the gaskets not sealed :(

Any help or advice would be appreciated. I have got pics if anyone needs to see what I have done :oops:

Nick


Not teaching you to suck eggs, but. If you do have a go at drilling the bolt out, make sure you remove the filter and stuff plenty of paper towal or old rag in the filter housing. The last thing you want is loads of swarf in there.
Should be a simple job with the bike laid on it's side.


Top
 Profile  
 
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Sun Feb 27, 2011 3:21 pm 
Offline
650 cc Monster

Joined: Fri Apr 03, 2009 3:08 pm
Posts: 4440
I wouldn't use an eez-out if I were you.

They are tapered and expand the bolt as you screw them in, wedging it ever tighter in. They can even crack the crankcase around the bolt. And god help you if it bottoms out against the crankcase

Often just drilling the bolt will loosen it sufficiently to withdraw. Use the bolt that did come out as a guide as to how far to drill. As an alternative, find an allen key that is an interference fit with the hole you have drilled and gently tap it in.


Top
 Profile  
 
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Sun Feb 27, 2011 4:56 pm 
Offline
80 cc
User avatar

Joined: Tue Jan 25, 2011 12:27 pm
Posts: 93
Location: Rotherham
Iv had a few different suggestions so going to give it a go tomorrow with this..........

http://www.screwfix.com/search.do;jsess ... lt+remover

I will update you all if any good!! Cant believe I even did this in the 1st place :roll:

Thanks for putting up the pics scotsy much appreciated ;)

_________________
THE FUTURE IS BRIGHT... THE FUTURES ORANGE


Top
 Profile  
 
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Sun Feb 27, 2011 5:35 pm 
Offline
Moderator
User avatar

Joined: Thu Apr 30, 2009 7:13 am
Posts: 1419
Location: East Angular
Those look like they are effectively short easy-outs, so they are unlikely to break off, but are also less likely to get a solid grip on the bolt itself. I tried to use something similar on a sheared-off sidestand bolt and got nowhere, but when I drilled it I actually managed to twist the bolt out the back of the hole - you haven't got the advantage of a gap at the back, which is why I was recommending the LH drillbit.

Try heating the area around the bolt with a hot air gun before trying, and give the bolt itself a few taps with a punch before you start, both of which should loosen up the threads.

I do still think that you would be better drilling the bolt (left or right handed drillbit) and then trying to unscrew it using an allen key or torx key before you try stud extractors.


Top
 Profile  
 
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Mon Feb 28, 2011 11:57 am 
Offline
80 cc
User avatar

Joined: Tue Jan 25, 2011 12:27 pm
Posts: 93
Location: Rotherham
Womble wrote:
Those look like they are effectively short easy-outs, so they are unlikely to break off, but are also less likely to get a solid grip on the bolt itself. I tried to use something similar on a sheared-off sidestand bolt and got nowhere, but when I drilled it I actually managed to twist the bolt out the back of the hole - you haven't got the advantage of a gap at the back, which is why I was recommending the LH drillbit.

Try heating the area around the bolt with a hot air gun before trying, and give the bolt itself a few taps with a punch before you start, both of which should loosen up the threads.

I do still think that you would be better drilling the bolt (left or right handed drillbit) and then trying to unscrew it using an allen key or torx key before you try stud extractors.



Thanks for the advice, I have just been and got a LH drill bit to try this also. Iv borrowed my mates hot air gun too so fingers crossed it will be out tonight... :?

_________________
THE FUTURE IS BRIGHT... THE FUTURES ORANGE


Top
 Profile  
 
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Mon Feb 28, 2011 3:37 pm 
Offline
650 cc Monster

Joined: Sat Jul 17, 2010 12:54 pm
Posts: 1950
Location: Poynton
My experience of using a stud extractors have never been successful. First time the extractor sheared and the only solution was spark erosion and a helicoil. All other occasions have just failed to remove the stud maybe because I did not want to exert too great a torque and risk shearing another extractor.
If you do use a stud extractor then use a tap wrench to turn it so as to keep the extractor straight.
What I have found works is to drill the centre of the stud out and then use a chisel or drift (or screwdriver) and tap it around once movement has started this method normally finishes the job fairly easily.
Something else that does work if you have the space and some thread sticking above the face is to weld another bolt to what is left of the stud, although I would be very careful with an alloy housing.
After removing the stud I would suggest you run a finishing tap down the hole or drill out and use a helicoil if the thread has been damaged, just putting a new bolt in using copper slip only has at best a 50/50 chance of it not happening again.

Good Luck

_________________
Peter
2001 DRZ 400E - 2010 to 2012
2009 KTM 400EXC - 2012 to


Top
 Profile  
 
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Mon Feb 28, 2011 7:41 pm 
Offline
80 cc
User avatar

Joined: Tue Jan 25, 2011 12:27 pm
Posts: 93
Location: Rotherham
No luck ppl neither the trend or left hand drill bit worked, now made this 10 times worse and to top it off there's a tiny drill bit snapped and stuck inside!!! I'm going to have to take this to a pro!! Anyone recommend anyone in south yorkshire to look at this for me??
:x :cry: :roll:

_________________
THE FUTURE IS BRIGHT... THE FUTURES ORANGE


Top
 Profile  
 
 Post subject: Re: HELP SNAPPED BOLT ON KTM400!!
PostPosted: Mon Feb 28, 2011 7:46 pm 
Offline
Moderator
User avatar

Joined: Thu Apr 30, 2009 7:13 am
Posts: 1419
Location: East Angular
Drat, that's not what we were hoping to hear :(

Try contacting KevInYorks who is a regular poster on KTMForum, or Nick at Endurotek and see what they recommend.


Top
 Profile  
 
Display posts from previous:  Sort by  
Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 29 posts ]  Go to page Previous  1, 2, 3  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!