Brakes problem HD K2500, Silverado, ABS brakes, vacuum assisted power brakes.
I had good brakes firm pedal, pedal only moved about 1/3 distance to floor to attain firm solid braking action.
Then inspected front disk brake pads, needed replacement. Removed wheels, depressed brake caliper pistons, removed calipers, replaced disk pads, reinstalled calipers and wheels and started the truck, actuated brake several times to reset disc pads.
Now I have soft pedal, low pedal, pedal would travel all the way to the floor with steady foot pressure.
Replaced master cylinder, bench bled master cylinder, bled front brakes did the thing!
Thought new master cylinder might be bad, took new master cylinder back to parts store, exchanged master cylinder for Another new master cylinder bench bled new master cylinder, put the second new master cylinder on truck, bled front brakes, started truck, tried brakes, same thing, had soft pedal, low pedal, pedal would travel all the way to the floor with steady foot pressure.
While both new master cylinders were installed on the truck, removed cap from master cylinder, stepped on brake pedal, brake fluid squirted like a fountain out of the reservoir neared the windshield on both new master cylinders, even after the master cylinder secondary piston moved past the fluid inlet hole located in the reservoir. What has happened to the master cylinders? I do not know if the truck is even safe to drive with the soft pedal, low pedal, pedal that travels all the way to the floor with steady foot pressure.
Please help! Do you have any ideas what might have happened?
Thanks, Bob Zinter, Aurora, CO.
have the same problem?
Wednesday, August 27th, 2008 AT 9:24 PM