Paceline Mechanics - help with rear brake!

[oldguy00]

Hey all, I'm trying to adjust a rear, under bottom braket direct mount brake for a friend. I cannot figure out how to get the arms both centered.

Pic attached of what I am working with.

In the pic, the arm on the right side (which is the non-drive side) has an allen bolt that I can adjust that moves that one arm in and out. But the left side does not. How can I get the left (drive side) arm to adjust outward a little bit??

Issue is that with the wheel properly centered, that left drive side pad is touching the rim.

Help!

[Duvivr6]

Lower cable tension. Hopefully you have an adjustor in line to play with if not (which is cool i dont like them) then you have a lot more work to do to get it perfect.

[oldguy00]

Lower cable tension. Hopefully you have an adjustor in line to play with if not (which is cool i dont like them) then you have a lot more work to do to get it perfect.

Thanks. Yeah she doesn't have one. So I guess I need to loosen cable a little bit so that the left arm moves out, then use allen bolt to make any adjustment to right arm. Here goes nothing....

[BRad704]

There's a little screw head visible on the arm where the cable is clamped. Typically that small screw handles brake side to side adjustment.


Sent from my iPhone using Tapatalk Pro

[Hindmost]

Coming from my ignorance: The orientation of the clamped cable on the left arm end looks incorrect-- it should point more in line with the cable housing. Perhaps a little slack in the cable gets you what you need.

(The cable attachment point in the photo above doesn't match the PDF provided below.)

[charliedid]

Looks like a Shimano right? There is some set up tool that can be used but you don't have to. Only one centering bolt I believe. See here and scroll down to find install if you have not already. I think cable attachment is basically correct. Those things are a PITA

https://si.shimano.com/pdfs/dm/DM-BR0003-08-ENG.pdf

[Mark McM]

Thanks. Yeah she doesn't have one. So I guess I need to loosen cable a little bit so that the left arm moves out, then use allen bolt to make any adjustment to right arm. Here goes nothing....

If she doesn't have a cable adjuster inline, then how does she open the caliper to remove/replace the wheel? This type of brake usually has a quick release/adjuster inline with the cable.

https://gd4.alicdn.com/imgextra/i4/1033355450/TB2HuGZm4SYBuNjSsphXXbGvVXa_!!1033355450.jpg

[charliedid]

If she doesn't have a cable adjuster inline, then how does she open the caliper to remove/replace the wheel? This type of brake usually has a quick release/adjuster inline with the cable.

https://gd4.alicdn.com/imgextra/i4/1033355450/TB2HuGZm4SYBuNjSsphXXbGvVXa_!!1033355450.jpg

Are we certain it doesn't? They always come with it.

[Duvivr6]

Mark Very good question but I am glad that horrible monster is not on this or any bike!

[BRad704]

I have a new favorite foreign word... kabeleinstellungsgritzel

[oldguy00]

Hey all, no, her bike doesn't seem to have one of those. Its a Felt IA tri bike.
She's going to be taking it to her shop for some other stuff, will get them to double check it. I got it working OK not perfect. Front brake is a pain in the ass too as its a 48cm frame and thus almost no room for cable housing bend from bars to the cheapo Vision brake caliper......frustrating.

[charliedid]

Hey all, no, her bike doesn't seem to have one of those. Its a Felt IA tri bike.
She's going to be taking it to her shop for some other stuff, will get them to double check it. I got it working OK not perfect. Front brake is a pain in the ass too as its a 48cm frame and thus almost no room for cable housing bend from bars to the cheapo Vision brake caliper......frustrating.

Yeah sorry, Mark seems to have been right. I knew that was a Felt as it's the one I was unfortunately tasked with trying to fix.