How to remove rear brake arm?

Hi all,

I've nearly stripped my frame down but I dont know how to remove the little sprung stub that holds the rear brake lever.
See pics (frame is upside down)



Theory was, with the actual brake lever taken off, I could just push it through.
I gently hammered for a bit but I'm not sure about it.

 

Block of wood and a hammer.

 

Your theory is correct. The reality is often different. Here's the process:

1. put the brake lever back on but only about half way or so, and tighten it up, that way you have some leverage to rotate it.

2. work some pb blaster, kroil, or similar into the shaft bore. While you're rotating it back and forth you need to push it in far enough sl that you can unhook the spring.

3. Unhook the spring. Be careful of fingers....it's a strong spring.
Once the pedal has rotated things in far enough to contact the frame, you'll need to remove it again.

4. By now, the shaft should be free enough to pull out, or use a half in. or so wooden dowel and mallet to drive it the rest of the way.

Problem is that the bore is simply a smooth bore, the shaft has to be greased, but down a the bottom there, it can get dry, and collect a lot of dust, dirt, or water. It gets corroded and sticky.

So, in a nutshell, drive it through part way, remove the spring, drive it through the rest of the way.

dave F

 

Your theory is correct. The reality is often different. Here's the process:

1. put the brake lever back on but only about half way or so, and tighten it up, that way you have some leverage to rotate it.

2. work some pb blaster, kroil, or similar into the shaft bore. While you're rotating it back and forth you need to push it in far enough sl that you can unhook the spring.

3. Unhook the spring. Be careful of fingers....it's a strong spring.
Once the pedal has rotated things in far enough to contact the frame, you'll need to remove it again.

4. By now, the shaft should be free enough to pull out, or use a half in. or so wooden dowel and mallet to drive it the rest of the way.

Problem is that the bore is simply a smooth bore, the shaft has to be greased, but down a the bottom there, it can get dry, and collect a lot of dust, dirt, or water. It gets corroded and sticky.

So, in a nutshell, drive it through part way, remove the spring, drive it through the rest of the way.

dave F

 

The splined area may have "mushroomed" a tad. Look at where the splines end and it starts being just a shaft, you may need to clean the OD up with a small sharp file.

 

Cheers fellas, great info.