SV650.org - SV650 & Gladius 650 Forum



Bikes - Talk & Issues Newsworthy and topical general biking and bike related issues. No crapola!
Need Help: Try Searching before posting

Reply
 
Thread Tools
Old 14-03-18, 07:06 PM   #1
Red ones
Member
Mega Poster
 
Red ones's Avatar
 
Join Date: Jul 2003
Location: Hertfordshire
Posts: 1,422
Default Brakes gone off

My front brakes suddenly decided to not work properly. Very stiff and on one disc it looks like the pads no longer strike the disc square.

I can strip them and put back on. All ok.
A few weeks later the same again.

Any ideas? Could it be that the calliper is not moving on the sliding pin well enough?
Red ones is offline   Reply With Quote
Old 14-03-18, 08:25 PM   #2
R1ffR4ff
Member
Mega Poster
 
R1ffR4ff's Avatar
 
Join Date: Feb 2017
Location: JAMOADR(1999 Curvy) 36,000 miles
Posts: 1,427
Default Re: Brakes gone off

Quote:
Originally Posted by Red ones View Post
My front brakes suddenly decided to not work properly. Very stiff and on one disc it looks like the pads no longer strike the disc square.

I can strip them and put back on. All ok.
A few weeks later the same again.

Any ideas? Could it be that the calliper is not moving on the sliding pin well enough?
Quite possible.Last year I had a bit of low-speed grabbing.Cured it by polishing all the slide pins etc with some 500 grit and metal polish and then greased them up.You can get the Red grease small amounts that will last for ages off Ebay,

https://www.ebay.co.uk/itm/20-gram-C...kAAOSwKtlWq9-q

But to be honest I think it's only Lithium grease with a bit of colour in it so any decent grease is better than none.

Also I had to Blast out the holes all the pins/locators go in and made sure everything slid nice.

I also pumped the Pistons out a bit and used some ACF50 on them so they were anti-corrosion treated.I've done this for years on my Motorcycles.You can use some clean engine oil.

I use a C-Clamp with some Masking tape wrapped on the ends of the Clamp to press the pistons back before refit.The tape is sacrificial to save any contact areas.


I always de-glaze my pads when I have them off on a bit of flat paver with some 500/320 grit.

After completion/Refit I give all the areas around the Pads and the Discs a clean with Carb/Brake cleaner.

This may not cure the problem but it will narrow down possibilities and is good brake maintenance.
__________________
"Stultus est sicut stultus facit"
R1ffR4ff is offline   Reply With Quote
Old 14-03-18, 09:50 PM   #3
Craig380
Member
Mega Poster
 
Join Date: May 2015
Posts: 1,231
Default Re: Brakes gone off

Could be the caliper pins, could also be the disc bobbins getting crudded up and not allowing the disc to 'float'.

Have a look at the quick video here which explains how to free them off. I do this every year around about now, after the worst of the winter grit / salt has gone.
Craig380 is offline   Reply With Quote
Old 14-03-18, 09:50 PM   #4
Craig380
Member
Mega Poster
 
Join Date: May 2015
Posts: 1,231
Default Re: Brakes gone off

Could be the caliper pins, could also be the disc bobbins getting crudded up and not allowing the disc to 'float'.

Have a look at the quick video here which explains how to free them off. I do this every year around about now, after the worst of the winter grit / salt has gone.
Craig380 is offline   Reply With Quote
Reply

Thread Tools

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
ABS Brakes DarrenSV650S SV Talk, Tuning & Tweaking 29 21-11-08 07:31 PM
Brakes Hogzi Stuff Wanted 0 06-03-06 08:47 PM
Brakes. Where, what and how much? Diveboy SV Talk, Tuning & Tweaking 5 21-01-06 09:55 AM
sv and svs brakes riktherider SV Talk, Tuning & Tweaking 3 04-06-05 02:19 PM
Brakes JakeRS SV Talk, Tuning & Tweaking 7 13-04-05 12:15 PM


All times are GMT. The time now is 01:49 PM.


Powered by vBulletin® - Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.