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Dis-assemble and re-assemble dual pivot brakes

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Dis-assemble and re-assemble dual pivot brakes

Old 01-23-08, 06:30 PM
  #1  
Stardust
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Dis-assemble and re-assemble dual pivot brakes

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
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Old 01-23-08, 07:31 PM
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peterbarson
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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.
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Old 01-23-08, 08:55 PM
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Sheldon Brown
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Originally Posted by Stardust View Post
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?
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
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Old 01-24-08, 05:34 PM
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Stardust
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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
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