Hey folks, got a question. I have a '96 F150 4.9, and when I brake, the truck pulls left. Would this be an alignment or brake problem? thanks

 

sounds like a brake problem if it only pulls left when you brake. either the right caliper is week, has a colapsed rubber line, or the caliper is hanging up on the caliper mount. i would disasemble the whole front brakes clean and lube the mounts,if the pads are wore nows a good time to replace them. take the rotors in to be turned and repack the berrings and put in new seals. while your there lube the tierod ends balljoints and anyother greese fittings you see under there.

 

I have a 2002 F250 with the same brake pull to the left. I have replaced the front right caliper and hose, greased the pad mounts and all that other good stuff. Still pulls left. Why would the left get more pressure. Possible air in brake line to right rear caliper or damaged piston return spring in front left caliper. Proportioning valve, i hope not. What do you think?

 

Have you bled both sides on the front? If you did, was the fluid coming out of the bleeder on the right the same as on the left? If not, check the hard brakeline going to the right. Sometimes when a truck is towed, the towing hook can pinch the brake line, or something can clog the line.

 

I have replaced all the brake fluid. Bled it. Everything. I'm going to check the rear brakes tomarrow.

 

did you do anything to the left front side you said you replaced caliper and line on right. usually if a auto is pulling while brakeing then thats the side that needs attention. the rear would have nothing to do with it pulling left or right. go ahead though and check them out but this wont solve your problem.

 

Usually if it pulls one way it is the opposite side causing the problem. But not this time.
My thought on the rear brake was air in the line and/or right rear causing a cushioning effect of the fluid. Meaning, since brakes are plumbed diaganolly, all pressure is going to the front left caliper instead of being split 70front 30rear percent. While the rear gets little or no hydraullic pressure.