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I have the short one.....crap!

Sounds right. Can you get parts to only rebuild the hydraulic piston part? The large piston and seal look new and appear to be in perfect condition. Also, I have read on some of the search material that there is a valve within the AP that controls it. When I took it apart, I noticed evidence...

OK, I've set all the brakes up and the pedal is firm from the top. I still can't stop the truck without standing on the brake with both feet. Crap! Not sure what to do now.

On the air pack I just cleaned it up a bit and honed the walls. I didn't see any damage to the cups and I feel they are OK. It also appeared the large piston was moving but I agree with the brakes not being adjusted there is too little fluid being moved to push the shoes firmly into the drums...

After a clean up with the air pack everything looks pretty good. The valve was free and seems to work. After reinstalling the air pack and bleeding it I'm still in the same boat. The first push on the brake pedal and its like no or very little brakes (maybe no air pack assist). When I "pump" the...

Thanks for the reply. I agree and think it's a combo of problems mostly due to lack of service. I think, like you said, the brakes need to be adjusted. I also removed the air pack today and found fluid in the air space so it must be leaking in the piston area. Upon removal of the piston I...

I must add it seems there is no help from the air pack and it would take both feet to stop the truck.

I've been working on the brakes for a couple of days now and seem not to be getting nowhere. When I push the pedal it goes about half the way down before I feel any resistance and the brakes work. I have read several threads on the subject but am still confused. Should the pedal be firm from...