Now that the relay rods are disconnected, the arm can be unbolted from the frame.

Spray both the bolts and the nuts with the penetrating lubricant.

On the bolt head use the breaker bar and 17 mm socket; put the 17 mm box wrench on the nut on the back side of the arm.

The wrench will get stuck on the frame and the breaker bar can then be used to break the rust off the bolt holding it onto the frame.

Once the bolt is loose a socket wrench can replace the breaker bar to make the job easier.

The (2) 4 1/4" bolts go on either side of the arm. The (1) 3 1/2" bolt goes at the top.