ok i have a 1990 ford f150 4x4 with the 300 eng. my truck has been making a squeling sound for the past three weeks well today i was driving i heared a nosie and the tires locked up for a sec. then the pedal went straight to the floor i could barly stop. when i was driving and hit a bump you heard load clunking and when you hit the brake it would squel . i drove it home when i got home i touched the front right rim and it was hot same with the locker hub. i smelled a weird smell. even from one of the rear tire. when i looked under the truck the front right side was wet smelled like brake fluild. i open up the hood and checked the brake res the front one was like half full the rear one was full. i drove it later one still no brakes but their was no fluid lost. i just put new calaburs on it like 4 months ago. i'm lost and realy need the truck cause i;m a firefighter thanks guys

 

Its interesting.

 

ok i kinda found the problem i looked at the calabor on the back brake pad is missing. i changed the calabor and pads bleed the lines still no brakes. now when i took the tire off the rotor some what came with it. not all the way. i cant get the rotor off i have locking hubs. i'm lost with the no brakes, and that the rotor is loose. the tire when its on the ground kinda sits like this / . does anyone know what can be the brakes problem and how to get the rotor off and or what is broke to make the rotor be like that. thanks

 

'Sounds' like the wheel bearing retainers/locking rings inside the bearing hub are possibly backing off, causing the rotor, bearing hub, and the wheel to tilt /.. Or even a wheel bearing coming apart.. If it's the lock rings backing out/off, it'll cause the rotor movement to 'push' the caliper piston back in after the brakes have been release, then on the next brake application the pedal/piston has more or excessive travel to make up before the brakes can apply correctly..If you lift the front, remove the wheel/tire, and can grab the rotor and hub and pull it IN/OUT and have excessive UP/DOWN clearances, then checking the retainers and wheel bearings for damage would be needed...

 

CALIPER.............

Have you checked for any TSB's on that truck ?

The large reservoir on the MC is for the front brakes

Pedal drop is either from a brake line Leak or a Master Cylinder gone bad

 

ok i took the hub out now their is to weird looking gears it looks like their is a lock ring between them the front one has a slot near the center it looks like some kind of ring i have no clue how to take that thing out. can some one help i need pictures on everything in their to know how much more to take off before i get to the rotor bolt. i cant find anything online. if someone can find a website or give me a walk through i would realy be thank full

 

You never replied to my previous post


Here is what you asked for

http://www.autozone.com/autozone/rep...00c152801cd92a