Loose brake caliper side pull arm?

[ilikeslowbikes]

Here's a video so you guys can see better:
View: https://drive.google.com/file/d/1KA-jjy1eEjl1j4sr4PidYru5o8iDtbl0/view?usp=sharing

I have a dual pivot side pull caliper for my front brake on my beach cruiser, specifically a Tektro C326. The arm in the front has developed some play and whenever I hit the brakes the pads want to "walk" onto the tire, which obviously I don't want. Does anyone know how to fix this? I'm guessing a bolt is loose somewhere, but I can't figure out where.

I tried tightening the hex bolt on the arm, but that just makes the arm not want to move and does nothing to affect the play. Any suggestions?

 

[Chainlube]

Your video was to short to see exactly what is going on there. If you could show us a full view of the caliper and then the activation, someone will be able to get you going.

 

[DieselTech]

Here's a video so you guys can see better:
View: https://drive.google.com/file/d/1KA-jjy1eEjl1j4sr4PidYru5o8iDtbl0/view?usp=sharing

I have a dual pivot side pull caliper for my front brake on my beach cruiser, specifically a Tektro C326. The arm in the front has developed some play and whenever I hit the brakes the pads want to "walk" onto the tire, which obviously I don't want. Does anyone know how to fix this? I'm guessing a bolt is loose somewhere, but I can't figure out where.

I tried tightening the hex bolt on the arm, but that just makes the arm not want to move and does nothing to affect the play. Any suggestions?

Yeah I was going to say your pivot bolt or your pivot bushing is bad, or the wrong pivot bolt. My brakes like that have a replaceable brass bushing where the arms pivots. The other thing I've seen is the wrong pivot bolt installed from the factory. It should be a shoulder bolt with shims on each side of the pivot bolt & the shims set your play like your video shows.