Stardust

Hi there,

My pair of Tiagra brakes have became stuck and it won't open again after I have braked even slightly. I know I should have cleaned them well before it stuck completely, but hey here I am I need to clean them now.

My question is I want to dis-assemble them and clean them then grease all the joints with assembly grease and put them back together. How do I do that? What special tools do I need?

Thanks,
Paul

peterbarson

do you have a picture?
are they center our side pull?
where are they sticking? at the pivots or at the cable? I have seen brakes stick because there cables siezed in the housing.
most brakes should come apart with metric wrenches, or allens.

Sheldon Brown

We used to sell drop bolts for dual pivot calipers like yours. I created an instructional page at:

https://www.sheldonbrown.com/dpdropbolt.html

The drop bolts are extinct, but I left the page up because I thought some folks might find it useful.

Sheldon "How2" Brown

Stardust

thanks for the tips and instructions, I have now successfully disassembled the brake and try to clean the brakes.

@Peter: they are dual pivot brakes and the cables are fine, it is just so much dirty has clog up the joints in the calipers and when I squeezed the brake levers the brake closes but they won't spring back to the original position after I have release the lever.

Thanks,
Paul