The first step is to remove the set nut holding the arm to the relay rod.

Begin with cleaning any oil and dirt from the set nut and then spray with the penetrating lubricant.

Once the spray has sat for 5 minutes, use needle nose pliers to straighten the cotter pin and pull it out.

During reassembly, never reuse a cotter pin. A new one should be included in a new arm. If a new arm is not purchased then one can be purchased from an auto parts store.

Remove the set nut using a 19 mm socket.

When installing the arm this nut should be torqued to 43 ft.-lb.