Brake issue on my stepdeck - 2010 Manac 53 ft slider spread

Triple M, I just replaced a slack adjuster on my truck. It was doing the same thing when it would rain. That wheel would just lock up even after I had replaced the drums and shoes. It fixed it for me

 

If its the bushing just check the slack its probably fine. Most adjustment issues aren't the slack but rather bushings and hardware.

The problem is if its the s cam bushing everything has to come apart including a New wheel seal.

 

And it really sucks seeing it is only a 2010 model and your having these problems !!!

 

With proper diagnosing you will only have to replace one part. That's the thing I hate about shops.is thwy tend to be parts replacers and not diagnosers.

 

This year I've done all 10 brakes. Premium shoes, centrifuse drums, full hardware kits, s cam bushing kits, all s cams, haldex lifeseal brake chambers (7 year warranty I've never had one fail) yet I only replaced two slacks because they were mis matched. All I did was verify that they worked properly, then cleaned em, changed the clevis pin bushing and greased them. The truck and trailer brake like a dream, good actuation and perfectly.balanced.

Slacks simply get blamed for too much.

 

My plan in the next month is to rebuild the entire brake system on my truck as well. It's got 823k miles on the original parts (minus shoes) so I think it's about time lol

 

Your new brake is going to grab more until the shoes seat themselves in.

I replaced all my shoes and drums this past summer, used premium shoes... Aaaw man what a mistake. I couldn't touch my brakes when I was empty without leaving rubber on the ground. Flat spotted all 8 and had to get them all shaved when several cars passed me and then came to a stop in front of me in Kansas City. 6 months later I can stop on a dime now without locking them up in a normal stop.

All I can suggest is get your self a heavy load on and ride your trailer bakes to help seat them to your drum, be sure not to get them too hot,