brakes pulling truck

[guz71]

I did some searching but I would like to try and get a more specific response. The truck pulls to the right all the time, its not horrible but its enough to do lane changes pretty quick when you let go. It has been doing this for quite a while now and the amount it pulls seems to be amplified under braking. The truck also seems to have less stopping power(feels kind of spongy but not bad) and under extreme braking, I get what could be described as a shutter from the front end. Its not to violent but it does shake the truck.

I have the bled the brakes a few times now, the last time I did I got zero air so I dont think thats an issue. So I am starting to lean towards a sticking caliper on the passenger side. What about the proportioning valve?

I am going to take the wheel off and inspect the passenger side tommorow, but what would be a good indication that the caliper is sticking? I have done quite a few brakes now, but I have never had to diagnos this kind of problem before, I havent ever played with a proportioning valve either...yet anyways.

Truck has a d60 in the front, 14ff in the rear with drums, and stock MC. thanks in advance.

 

[bp71k5]

If it's dragging, first look for deep grooves in the disc or big discolorations from heat on the disc.

To check for a dragging caliper, you can also just jack up the tire and try rotating the wheel. If it spins freely after applying the brakes (and letting go), then your trouble is elsewhere.

 

[vortec]

probably dirt or something keeping the piston from retracting. i spray brake parts cleaner in the area after a long day of wheeling to keep that from happening.

 

[Cowboy_80]

the shutter could be warped rotors. Never have experienced it myself, but that is a possibility. As for the rest of it, it's a quick afternoon to take the calipers off one at a time and spray them down and clean them up. Don't disconnect the brake line, just dismount them from the rotor. You might even see the problem.