[mellowhobbit]

so instead of just removing the rear brake adjustment I removed this, not sure on the name of this part but I know what it does and all that, but not I cannot get it back on or even off again.

 

[doode]

Rotate til the splines match. Maybe rotate like 45 degrees ccw. Take your time and slowly rotate 360 degrees til you find the right spline match.
The little metal tab that's pointing 6 o clock in the photo... opposite that there is a punched dot. That dot should line up with the punched dot on the end of the shaft. You can see both in your photo.

 

[Gixxer-18]

Doodes right.... look at your brake pivot pin... see the dot? Look at the brake arm, see the strait part of the arm? Where the splines are? Line them up and refit the lever. There you go! Roberts your mothers brother! Sorted.

 

[mike in idaho]

Force a screwdriver into the crack and pry it apart a little.

 

[longdistancerider]

Also you will probably need to remove the backing plate to hold the shoe pivot in place when re-installing the lever. Look carefully at each piece and you'll notice that the wear indicator tab has a larger tooth that aligns with a larger groove in the pivot. Get the dimples of the lever and pivot aligned.

 

[mellowhobbit]

so after buying 3 pry bars a cold chisel, used as a pry bar, and clamp I got it back on thanks for the advice.