Dust seals popping out of front calipers - SV650.org

15-03-10, 08:54 PM

Went to clean up my front calipers today only to find the dust selas had popped out again (last happened about summer time so i put in brand new seals)

Any idea why they keep escaping and how to stop them?

Thanks

Sid Squid · 15-03-10, 08:58 PM

You need to clean the grooves properly before refitting the seals, they need to be completely free and square if the seal is to stay in the groove for any significant amount of time. Use rubber grease not brake fluid as a lubricant when assembling.
This will slow the onset of the corrosion that causes this problem.

15-03-10, 09:03 PM

Im sure i did that last time and hopefully i did this time as well! i dont have any red rubber grease so i used some olive oil on the recommendation of Spiderman, do the trick wont it?

Sid Squid · 15-03-10, 09:35 PM

You've been taking technical advice from Zig

?

Now I'm worried.

15-03-10, 09:42 PM

Haha, yep

Dave20046 · 15-03-10, 09:54 PM

Quote:

Originally Posted by Sid Squid

You've been taking technical advice from Zig

?

Now I'm worried.

You mean you can't use jam on bearings?

15-03-10, 10:02 PM

Quote:

Originally Posted by Holdup

Any idea why they keep escaping and how to stop them?

I believe it's road salt - gets in while dilute, dries, and as it builds up over time, pushes the dust seal out.

Not sure how to prevent it though, only how to sort it.

Sid Squid · 15-03-10, 10:09 PM

The horrid crystalline stuff wedging your pistons in place is mostly dried brake fluid, rather than salt.

15-03-10, 10:11 PM

get the red rubber grease in them. I had problems with mine quite often as I ride through the year but they have been fine since I used the rubber grease on them. They will also benefit from a proper thorough clean out. The crud gets very hard to shift and will need scraping out with some thick wire/hooked end of a small screwdriver,dremell brush etc. You will need to see clean metal inside the seal recess to have a lasting effect.
Sorry to preach if you have done the proper clean out but I did half a job once and had to do it all over again only a couple of months later

It really is worth spending the time on them.

yorkie_chris · 15-03-10, 10:39 PM

Dental picks are good for this, you can also bend and sharpen brazing rod to suit. They're more gentle but no good for getting really stubborn corrosion off.

15-03-10, 08:54 PM	#1
Holdup Guest Posts: n/a	Dust seals popping out of front calipers Went to clean up my front calipers today only to find the dust selas had popped out again (last happened about summer time so i put in brand new seals) Any idea why they keep escaping and how to stop them? Thanks

15-03-10, 08:58 PM	#2
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Dust seals popping out of front calipers You need to clean the grooves properly before refitting the seals, they need to be completely free and square if the seal is to stay in the groove for any significant amount of time. Use rubber grease not brake fluid as a lubricant when assembling. This will slow the onset of the corrosion that causes this problem. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

15-03-10, 09:03 PM	#3
Holdup Guest Posts: n/a	Re: Dust seals popping out of front calipers Im sure i did that last time and hopefully i did this time as well! i dont have any red rubber grease so i used some olive oil on the recommendation of Spiderman, do the trick wont it?

15-03-10, 09:35 PM	#4
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Dust seals popping out of front calipers You've been taking technical advice from Zig ? Now I'm worried. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

15-03-10, 09:42 PM	#5
Holdup Guest Posts: n/a	Re: Dust seals popping out of front calipers Haha, yep

15-03-10, 10:09 PM	#8
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Dust seals popping out of front calipers The horrid crystalline stuff wedging your pistons in place is mostly dried brake fluid, rather than salt. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

15-03-10, 10:11 PM	#9
svrich Guest Posts: n/a	Re: Dust seals popping out of front calipers get the red rubber grease in them. I had problems with mine quite often as I ride through the year but they have been fine since I used the rubber grease on them. They will also benefit from a proper thorough clean out. The crud gets very hard to shift and will need scraping out with some thick wire/hooked end of a small screwdriver,dremell brush etc. You will need to see clean metal inside the seal recess to have a lasting effect. Sorry to preach if you have done the proper clean out but I did half a job once and had to do it all over again only a couple of months later It really is worth spending the time on them.

15-03-10, 10:39 PM	#10
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Dust seals popping out of front calipers Dental picks are good for this, you can also bend and sharpen brazing rod to suit. They're more gentle but no good for getting really stubborn corrosion off. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

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