sticking brake pt 2 (got some lovely pictures ) *update* - SV650.org

19-01-05, 10:30 PM

ok, went to sort out my sticking calipar,
got the calipar off the bike. amazed how much road crud had acumalated down there.

after 2 hours of struggling, i managed to free one pad.
(doesnt help that my haynes manuals diagrams and instructions look nothing like my calipar)

now im stuck - ran out of idea's on how to remove the other brake pad - which i need to do to get to the piston.

C - the brake pad, this needs to be removed, but cant seem to find any way of getting it off - as the big thing (thats part of the calipar body) is in the way - no way of getting this off at all.

D - im amazed at how much rust there is - wasnt there a few weeks ago.

a side shot

A - part of the calipar body that is stopping the brake pad coming off.
B - the piston - causing all the trouble, it i could move the friggin brake pad, i could get to it and give it a good seeing to

this is the way im guessing that i should go, now this will solve everything if i can get this bolt out. it seems that someone has literally covered it in superglue or some locking compound and gone OTT with it, covered it in copper grease and put the seal over the top of it.

but from what i can see - this looks to be a complete round bolt - with no way of getting it out.

the questoin. is there anything that ive overlooked ? any way i can get superglue out of there ? an easier way than spending a few hours with a saftey pin picking it off ?

cheers guys

*edit* ive added the bolt thats been superglued or something as "E", you can see it from different sides in the 2 photo's

19-01-05, 10:35 PM

can you not get in with a file and file 2 sides of the bolt flat

19-01-05, 10:38 PM

no, its got a width of about 10mm

Viney · 19-01-05, 11:22 PM

Right. Looking at the piccies, you can get a punch in there to the pad. Get someone to hold the caliper, and use a pin punch to dislodge the pad. Get a tack hammer as well. If all this fails, take the caliper off. Yes i know you will need to re bleed the system. The take it to a mechanics and get them to remove the bits you need. Then give a reall good wash and brush up. Lots of brake cleaner, stiff nylon brush, then copper ease all bits when you put back together.

If its rideable, bring it over on Sunday and i'll sort it for ya. Im doing Shins carbs. A set of brakes aint no big thing.

PM if you wanna do that

And that bolt you have marked up, isnt a bolt, its part of the claiper main body. The pad just sits on that barand rests against the caliper body, then slides along etc etc.

19-01-05, 11:33 PM

im not sure what you mean viney to be honest.

do you recon you could just mark on the pictures what you mean ?

id love to pop it to ya friday - but this is a 125cc bike capable of 50mph (revvin its nuts off)
dont think it would survive a long distance journey. and it aint really ride-able til i sorted the brake.

Sid Squid · 20-01-05, 08:50 AM

The reason that the brake is dragging is most likely the reason you can't get the pad out, the pins that pass through the rubber gaiters are seized, if you could compress the caliper bracket tight up against the caliper itself, (that is, the rubber gaiters compressed to their minimum length), then you would be able to remove the pad from it's pins, when you've done that, pump the piston out a little and clean it.
When reassembling it, the pins that pass through the rubber gaiters must not be lubricated with ordinary moly or copper grease, you must use grease which is suitable for rubber*, most other grease will damage the rubbers, make them swell and seize the pins again, it's also a far better grease to use when reassembling the hydraulics as well, much better than getting corrosive brake fluid everywhere.

* Castrol Girling Rubber grease, for example. Doesn't cost much and the sparing amounts required means that a tin will last you your entire life. Halfwits etc sell it.

Viney · 20-01-05, 08:53 AM

Quote:

Originally Posted by bikageboy

im not sure what you mean viney to be honest.

do you recon you could just mark on the pictures what you mean ?

id love to pop it to ya friday - but this is a 125cc bike capable of 50mph (revvin its nuts off)
dont think it would survive a long distance journey. and it aint really ride-able til i sorted the brake.

I said sunday, but never mind

. (E) in your pictures is not a bolt. Its part of the caliper casting.

Do what squid said.

20-01-05, 03:49 PM

sorry viney. was in a bit of a hurry when typing it.
ok ill give it a go - ive tired pressing the caipar mount as far back as it will go - but it doesnt budge one bit.

20-01-05, 05:18 PM

looks what me found

so i gotta push that calipar hard - real hard.
can you suggest an easier way to do it ? i been trying with a hammer but still had no luck.

(got im dying to get the WD40 out

)

Sid Squid · 21-01-05, 11:15 AM

Don't hit it, use a 'G' clamp or similar, a little squeeze on one pin, then a little on the other, 'till it's out of the way and you can remove the pad.

In this circumstance, with the pins being so firmly stuck, it may be best to cut the pad off with a hacksaw, so you don't need to push the pins fully in, which may make it harder to get the bracket off the caliper and free it all up so you can make it work.

19-01-05, 10:30 PM	#1
Warren Guest Posts: n/a	sticking brake pt 2 (got some lovely pictures ) update ok, went to sort out my sticking calipar, got the calipar off the bike. amazed how much road crud had acumalated down there. after 2 hours of struggling, i managed to free one pad. (doesnt help that my haynes manuals diagrams and instructions look nothing like my calipar) now im stuck - ran out of idea's on how to remove the other brake pad - which i need to do to get to the piston. C - the brake pad, this needs to be removed, but cant seem to find any way of getting it off - as the big thing (thats part of the calipar body) is in the way - no way of getting this off at all. D - im amazed at how much rust there is - wasnt there a few weeks ago. a side shot A - part of the calipar body that is stopping the brake pad coming off. B - the piston - causing all the trouble, it i could move the friggin brake pad, i could get to it and give it a good seeing to this is the way im guessing that i should go, now this will solve everything if i can get this bolt out. it seems that someone has literally covered it in superglue or some locking compound and gone OTT with it, covered it in copper grease and put the seal over the top of it. but from what i can see - this looks to be a complete round bolt - with no way of getting it out. the questoin. is there anything that ive overlooked ? any way i can get superglue out of there ? an easier way than spending a few hours with a saftey pin picking it off ? cheers guys edit ive added the bolt thats been superglued or something as "E", you can see it from different sides in the 2 photo's

20-01-05, 08:50 AM	#6
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	The reason that the brake is dragging is most likely the reason you can't get the pad out, the pins that pass through the rubber gaiters are seized, if you could compress the caliper bracket tight up against the caliper itself, (that is, the rubber gaiters compressed to their minimum length), then you would be able to remove the pad from it's pins, when you've done that, pump the piston out a little and clean it. When reassembling it, the pins that pass through the rubber gaiters must not be lubricated with ordinary moly or copper grease, you must use grease which is suitable for rubber, most other grease will damage the rubbers, make them swell and seize the pins again, it's also a far better grease to use when reassembling the hydraulics as well, much better than getting corrosive brake fluid everywhere. Castrol Girling Rubber grease, for example. Doesn't cost much and the sparing amounts required means that a tin will last you your entire life. Halfwits etc sell it. __________________ 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"

21-01-05, 11:15 AM	#10
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Don't hit it, use a 'G' clamp or similar, a little squeeze on one pin, then a little on the other, 'till it's out of the way and you can remove the pad. In this circumstance, with the pins being so firmly stuck, it may be best to cut the pad off with a hacksaw, so you don't need to push the pins fully in, which may make it harder to get the bracket off the caliper and free it all up so you can make it work. __________________ 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"

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19-01-05, 10:35 PM	#2
SPeeeeDY Guest Posts: n/a	can you not get in with a file and file 2 sides of the bolt flat

19-01-05, 10:38 PM	#3
Warren Guest Posts: n/a	no, its got a width of about 10mm

19-01-05, 11:22 PM	#4
Viney Member Mega Poster Join Date: Jul 2003 Location: In the shadows to the left Posts: 7,700	Right. Looking at the piccies, you can get a punch in there to the pad. Get someone to hold the caliper, and use a pin punch to dislodge the pad. Get a tack hammer as well. If all this fails, take the caliper off. Yes i know you will need to re bleed the system. The take it to a mechanics and get them to remove the bits you need. Then give a reall good wash and brush up. Lots of brake cleaner, stiff nylon brush, then copper ease all bits when you put back together. If its rideable, bring it over on Sunday and i'll sort it for ya. Im doing Shins carbs. A set of brakes aint no big thing. PM if you wanna do that And that bolt you have marked up, isnt a bolt, its part of the claiper main body. The pad just sits on that barand rests against the caliper body, then slides along etc etc.

19-01-05, 11:33 PM	#5
Warren Guest Posts: n/a	im not sure what you mean viney to be honest. do you recon you could just mark on the pictures what you mean ? id love to pop it to ya friday - but this is a 125cc bike capable of 50mph (revvin its nuts off) dont think it would survive a long distance journey. and it aint really ride-able til i sorted the brake.

20-01-05, 03:49 PM	#8
Warren Guest Posts: n/a	sorry viney. was in a bit of a hurry when typing it. ok ill give it a go - ive tired pressing the caipar mount as far back as it will go - but it doesnt budge one bit.

20-01-05, 05:18 PM	#9
Warren Guest Posts: n/a	looks what me found so i gotta push that calipar hard - real hard. can you suggest an easier way to do it ? i been trying with a hammer but still had no luck. (got im dying to get the WD40 out )