Horizons Unlimited - The HUBB

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-   -   rear brake pads cant fit (https://www.horizonsunlimited.com/hubb/yamaha-tech/rear-brake-pads-cant-fit-65728)

awolxt 5 Jul 2013 11:30

http://i39.tinypic.com/9ivfvp.jpg

awolxt 5 Jul 2013 11:32

http://i44.tinypic.com/syv9fc.jpg

bergspre 5 Jul 2013 11:39

Thank you very much, this explains it well. Im going to try this now :D

awolxt 5 Jul 2013 11:45

No problem and good luck

Bill

bergspre 22 Apr 2017 18:12

I still havent been able to get the caliper off the guide pin. It rotates but its pretty hard to rotate all the way to the right. I cant do it by hand but it moves if i hit it with a hammer (a wooden piece between, im not hitting it directly).
Could it be that the caliper has to be rotatet to the right and to the correct angle before its actually possible to slide it off the guide pin?

awolxt 22 Apr 2017 18:25

Im sure the caliper has to rotate 90 degrees before it will slide off. Perhaps its gummed up or rusted?

bergspre 22 Apr 2017 18:27

Its tighter the more i rotate it toward 90 degrees. Gonna try to force it to 90 and see if it comes off.

awolxt 22 Apr 2017 18:32

Mine moves very easily. So i think yours could be rusted

Jens Eskildsen 22 Apr 2017 21:29

Damn, 4 years later and still not fixed?

Use penetrating fluid and heat.

bergspre 23 Apr 2017 22:46

Yea I know, still not fixed lol.. I used the old brake pads.
Here's a video that shows the problem, as you can see theres no way to fit a new pad. It must be rusted on the guide pin.
I think ill just unmount the caliper and deliver it to a local mechanic and ask them to fix it. I didnt want to mess with bleeding the brakes so I havent taken it off completely, but it can't be that hard..and it is time to just get it fixed.

https://www.youtube.com/watch?v=9lzr9oS_wn4

xtrock 24 Apr 2017 08:45

Drill open the front and you have acess to the 6mm hex, if its really stuck! Try use piston to pump first, if it wont release go for drilling.

Jens Eskildsen 24 Apr 2017 19:38

Yeb, seems to be stuck. You can get a straw from wd40/simular in under the rubberboot that protects the slidepin. Spray some wd40/ rustremover/ multioil inthere, and work the caliper up and down, and from side to side. If the bushing under the other rubberboot is stuck, do it there aswell while youre at it. Dont use all your forces, but some slight "manhandling" should be okay.

Do that, perhaps for several days, and see if it loosens up. Things start to turn for the better as soon as you have some additional movement.

Heat would work really well, as the aluminium expands faster than the pin, but you might ruin the rubberboot if youre not carefull. A small blowtorch is really good for adding concentrated heat, to a small area.

awolxt 24 Apr 2017 23:49

Its strange that in your video it rotates upwards okay but wont slide along the pin easily. It needs to be able to slide freely as youve discovered to allow the clearance for the new pads. Are you rotating the caliper to the right enough to then slide it off? I will have a look at mine tomorrow ( its off the bike at the moment) and refresh my memory as to how far it has to go for removal. The brake bleeding process is fairly easy and the guys on here will help if you get stuck.

Bill

bergspre 25 Apr 2017 22:37

Im maybe not rotating it enough, it rotates "freely" at low angles but the closer to 90 degrees it gets it gets harder to rotate. In the video you can see that its stuck, i just hit it a bit with my hand and it turns down again. Maybe at 60 degrees its so stuck that I cant move it by hand. I have tried to carefully hit it a bit with a hammer and a wooden piece between and am then able to rotate it up to 90 degrees. It seems like it does rotate on the pin but it does not move at all on the pin back and forth.. the other side moves..so this is kind of strange.

Also noticed that it seems that the pin itself has sideways movement.. Could it be that it seized and while braking the caliper moved but on the right side it was seized so instead of moving in/out on the pin the pin itself had to bend?

awolxt 26 Apr 2017 08:48

I will go and have another look at mine incase im missing something obvious. I cant think what though. Looking at your video again. Your brake line isnt restricting the calipers movement at all is it? Im not sure whether the pin could come loose in use cause its never happened to me . That pin does unscrew from the bracket but im not sure if you could remove it with the caliper in situ and if it would be any better for you if you could. I think xtrocks idea of using brake pressure to pop it off is the best one .


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