SV650.org - SV650 & Gladius 650 Forum



SV Talk, Tuning & Tweaking Discussion and chat on all topics and technical stuff related to the SV650 and SV1000
Need Help: Try Searching before posting

Reply
 
Thread Tools
Old 09-02-09, 05:47 PM   #1
SV Meldrew
Guest
 
Posts: n/a
Unhappy Help - Front Caliper Mounting Bolts

I've just used my shiney brand new Norbar torque wrench and have overtightened the front brake caliper mounting bolts! I Don't know how this has happened as I set the torque to Haynes specifications?

Does anyone know what kind of re-thread would be best bearing in mind it's the brakes?
  Reply With Quote
Old 09-02-09, 06:06 PM   #2
yorkie_chris
Noisy Git
Mega Poster
 
yorkie_chris's Avatar
 
Join Date: Apr 2007
Location: Halifax/Leeds
Posts: 26,645
Default Re: Help - Front Caliper Mounting Bolts

Either your torque wrench is not calibrated, or the haynes spec is a dry torque and you have used copperslip.

Should be fine with a helicoil, but it is a fine pitch bolt IIRC. Have you got vernier and a thread gauge? (I can measure mine if you don't)
__________________
Currently Ex Biker
Now rebuilding a 63' fishing trawler as a dive boat
yorkie_chris is offline   Reply With Quote
Old 09-02-09, 06:46 PM   #3
simesb
Guest
 
Posts: n/a
Default Re: Help - Front Caliper Mounting Bolts

You've actually overtightend so much you've stripped the thread?
  Reply With Quote
Old 09-02-09, 06:56 PM   #4
timwilky
Member
Mega Poster
 
timwilky's Avatar
 
Join Date: Mar 2004
Location: Not in Yorkshire. (Thank God)
Posts: 4,116
Default Re: Help - Front Caliper Mounting Bolts

My haynes

Front brake caliper mounting bolt = 39Nm. Hardly a thread stripping torque

Helicoil should be fine
__________________
Not Grumpy, opinionated.
timwilky is offline   Reply With Quote
Old 09-02-09, 06:59 PM   #5
yorkie_chris
Noisy Git
Mega Poster
 
yorkie_chris's Avatar
 
Join Date: Apr 2007
Location: Halifax/Leeds
Posts: 26,645
Default Re: Help - Front Caliper Mounting Bolts

Have you set it with lbf-ft instead?
__________________
Currently Ex Biker
Now rebuilding a 63' fishing trawler as a dive boat
yorkie_chris is offline   Reply With Quote
Old 09-02-09, 07:08 PM   #6
SV Meldrew
Guest
 
Posts: n/a
Default Re: Help - Front Caliper Mounting Bolts

Thanks everyone. I did use copperslip & thread lock. The wrench is twist n go nos. 1-9 (20nm-100nm). I just assumed the thread is b******d as I left it cold n wet with the hump. I will attempt to lever the bolt out tomorrow and check thread for certain.
  Reply With Quote
Old 09-02-09, 07:10 PM   #7
timwilky
Member
Mega Poster
 
timwilky's Avatar
 
Join Date: Mar 2004
Location: Not in Yorkshire. (Thank God)
Posts: 4,116
Default Re: Help - Front Caliper Mounting Bolts

With luck it will be the bolt knackered, but sods law applies
__________________
Not Grumpy, opinionated.
timwilky is offline   Reply With Quote
Old 09-02-09, 07:10 PM   #8
yorkie_chris
Noisy Git
Mega Poster
 
yorkie_chris's Avatar
 
Join Date: Apr 2007
Location: Halifax/Leeds
Posts: 26,645
Default Re: Help - Front Caliper Mounting Bolts

What you use both for? One or the other.
__________________
Currently Ex Biker
Now rebuilding a 63' fishing trawler as a dive boat
yorkie_chris is offline   Reply With Quote
Old 09-02-09, 07:27 PM   #9
SV Meldrew
Guest
 
Posts: n/a
Default Re: Help - Front Caliper Mounting Bolts

Quote:
Originally Posted by yorkie_chris View Post
What you use both for? One or the other.
1 side had copperslip on the other had thread lock.
  Reply With Quote
Old 09-02-09, 07:30 PM   #10
yorkie_chris
Noisy Git
Mega Poster
 
yorkie_chris's Avatar
 
Join Date: Apr 2007
Location: Halifax/Leeds
Posts: 26,645
Default Re: Help - Front Caliper Mounting Bolts

Use threadlock on both, or copperslip and lockwire
__________________
Currently Ex Biker
Now rebuilding a 63' fishing trawler as a dive boat
yorkie_chris is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Where can I buy caliper mounting bolts? Binky SV Talk, Tuning & Tweaking 4 07-08-08 10:46 AM
Front caliper bolts. Mark_h SV Talk, Tuning & Tweaking 4 13-03-08 02:00 PM
Brake caliper mounting points Philbo Bikes - Talk & Issues 5 19-07-07 05:22 PM
Rear brake caliper mounting bolt $tevo SV Talk, Tuning & Tweaking 12 06-05-06 07:29 AM


All times are GMT. The time now is 08:38 AM.


Powered by vBulletin® - Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.