I have crawled under my truck and for the life of me I can't figure out how to adjust the park brake. Can anyone help?

 

Not sure about these trucks but on my f150 there was a rubber cap on the back side of the rear breaks. I pulled off the cap and there was a round screw in there with horizontal lines on it that you could use a flat blade screw driver to move to adjust it.

 

That is not the park brake adjuster that is the rear brake adjuster for brakes still using shoes.

 

Parking brakes on our trucks do use shoes.

 

True, but I have not noticed the above mentioned rubber plug to adjust them. Only on the main shoe brake adjustments. If I am wrong please feel free to correct me.

 

That was what I was going to say. IIRC there is also an adjustment on the cable itself. Should twist with a bolt on each end to thight and loosen the cable.

 

This is what I find in my service manual.

 

That is it. The arrow is point at the access hole to the parking brake adjuster screw.