dumb question time

[Wicked97]

88 f250 is the vehicle.

When I bought the truck the rear brakes would lock up immediately on rock. In the course of the build I replaced everything in the rear and front, bypassed the rabs and installed a proportioning valve. It still tries to lock the rear.

The truck was farmerized when I bought it and was a wiring mess. The brake lines coming off the master cylinder were replaced and routed wrong

So begs my question which brakes actuate first front or rear when you press the pedal?

 

[Devon Harley]

Fronts do about 70% of stopping an rears do the rest.

 

[icanfixall]

The work at the same rate I feel. I know the fronts rewuire the larger part og the mastercylinder on most rigs or cars and the rears are never slef adjusted properly so maybe there is something wrong there. Hopefully someone didn't change the front lines for the rear lines of the master cylinder. Without actually looking at mine I believe the front line off the master cylinder goes to the front calipers.

 

[redneckaggie]

bypassing rabs will cause rear tires to lock up and I would check tension of brakes as well as condition off springs on drums

 

[Wicked97]

No need to check springs as they are all new. Anyway I fixed the problem.

Take more time to play with the new proportioning valve. Couple more turns and it brakes pretty even with manageable lockup.