Never ending brake problem

[chase8266]

at the beginning of this thread you said you had (all new wheel cylinders)?
well let us know how it goes

 

[73azbronco]

before pulling stuff off are you doubly triply sure the brakes are bled all the way especially the front end?

With dual system brakes, you may have pedal pressure giving you rear brakes and rear brake lockup, but still have air in the front. Was the MC pre-bled before install?

sorry if you have done all this, but usually these things are a result of the easy problems vice some bad cylinders or bypass or residual valving.

 

[brewchief]

Are the front brakes adjusted properly? Adjust the shoes out while spinning the wheel by hand till you get a slight drag, the shoes don't move very far so if there out of adjustment you won't have brakes.

 

[mlaird]

well-i think i figured out the problem_front and rear wheel cylinders were reversed so the big bored cylinders were in the rear. also learned that my drums were all stock and replaced those as well as the shoes. im taking the truck back to the mechanic that installed the cylinders wrong and having them correct it. the brakes work better as is, but rears are still locking up first so hopefully this will solve the problem and my brake warning light will finally go out.

 

[Viperwolf1]

well-i think i figured out the problem_front and rear wheel cylinders were reversed so the big bored cylinders were in the rear. also learned that my drums were all stock and replaced those as well as the shoes. im taking the truck back to the mechanic that installed the cylinders wrong and having them correct it. the brakes work better as is, but rears are still locking up first so hopefully this will solve the problem and my brake warning light will finally go out.

He better not try to charge you anything to fix it. Sorry but there's no excuse for something like that. Somebody could have got hurt.

 

[mlaird]

they arent charging anything. main problem was that the cylinders looked identical, only when you remove the black rubber on the end do u know that they have different piston sizes for front and rear

 

[Larry B]

You did adjust the front shoes out till you could feel a slight drag on the front brakes.

 

[bludorbronc]

that block is a proportion valve. there is a rod sticking out one side, grab it with a pair of pliers and pull while somebody inside steps on the brakes, this centers the valve.