Carl any thoughts what else could be wrong?
When I step on parking brake pedal, the shaft goes down smoothly put the flat metal rod does not hold it depressed, my assumption was the spring was not pushing the flat metal to hold the brake pedal rod in the depressed position?
Denis
There is a lot going on with those parking brakes to make them work right,. Can you take some pics of your parts viewed from inside the cab?
Do you have the long spring and long rod which connects to the cross bar behind the cab?
Everything needs to be hooked up for it to work properly.