I have had weak rear brakes for a while and no parking brake. I took them apart and found the operating levers were seized (again). I got them moving and greased them up, re-installed everything with a new spring kit and new shoes, cleaned the drums with brake cleaner. I also put in 2 new wheel cylinders and bled the system out well. One cable was seized, so I replaced both cables.
The brakes are marginally better but the parking brake still did virtually nothing. I believe this is because the operating levers are not adjusting the shoes out from the minimum position that they are in after you reassemble everything. When you set the parking brake, it is suppose to operate the "quadrant" of the operating lever and adjust the shoes out to the correct position. So I replaced the operating levers ($117 for two simple parts).
Here's a picture from the FSM, looking down at the operating lever (aka Parking brake strut & adjuster assembly):
Still, when operating the parking brake, the operating levers don't seem to adjust. I've applied the parking brake with the drums off and one shoe moves out as it should, but the adjustment doesn't seem to work.
There really isn't much left to replace other than the drums which look fine and are are clean. I've adjusted the parking brake cable tension according to the FSM, 10 lbs of force for about 5 to 7 clicks.
What am I missing here? It almost seems like I've forgotten something but the FMS says I am doing it right.... I'm puzzled.