My grandpa has a 93 ford f350 dually 4*4 its logaded to the max as far as wieght we can't seem to get the brakes to stop like they should we've tried new master cylinders brake shoes ajusting them bleeding them every thing we can think of does anyone possibly know of anything else that could be the problem

 

You have three rubber hoses in the system, one for each front brake, one in the rear, they can go bad, not letting enough fluid pass through to the cyl's. The vacuum booster may be bad, also the splitter valve may not be working like it should.

 

Ok thanx i will check those out

 

Hello, welcome to FTE - You may find that you get more answers in the proper forum, This particular forum is for the large Ford trucks, 2 ton and larger - the F350 is a 1 ton and is better posted in the appropriate light truck section / forums

Maybe the Mods will move this?

David