Rear wheel lock up while braking

[86M10086.2L]

I appreciate all comments. Just stating I've checked off that box on the list.

 

[Recovry4x4]

Well, it has to be from the rear rubber line, back. Odds of it being hydraulic are low on the list. Flap valves from fractured hoses and crushed lines are more prone to cause release issues. Were it my truck I would either follow the suggestion of swapping stuff side to side or if I were in a pinch for time, I would replace shoes and hardware. If all primary and secondary shoes are oriented correctly then it just about has to be linings hdwe.

 

[86M10086.2L]

If I get home from work tonight on time I'm gonna try to swap the drums and see what happens.

 

[86M10086.2L]

Now that I have my truck on the road again I wanted to post my solution to close out this problem. The culprit here appeared to be contaminated brake shoes. After replacing a set of frozen u-joints on my front axle shafts and replacing the damaged manual hubs from said earlier seized u-joints. I decided to install a new set of rear brake shoes on the truck while I had it on the lift. I would have never guessed it. As in the past I've had dirty shoes that I've soaked and cleaned without issue. But after a few hundred miles the brakes continue to function properly. So I guess that's it.

 

[Recovry4x4]

Thanks for the update. Contamination isn't always obvious.

 

[rustystud]

Shoes that get contaminated never really come clean. When they get hot the oils and or brake fluid comes out and causes the problems all over again. Unless the problem just started and you caught it in time, always replace the brake shoes.