BigEMobileTech
New member
- 8
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- Location
- Virginia
Hey how goes it? I do not own a duece myself but I my clients have several and I am finding myself working on them more and more. Case in point is I am having an extrememly frautrating issue with the brakes. My customer complained no brake predal, so I performed a visual insepection of the truck and had my brother pump up the brakes. I noticed that the Rear most axle was damp at the bottom of the backing plate. Simple enough right? So I replaced the wheel cylinder and flushed the last lines with dot 5 since it seemed to have had a mix of a glycol based fluid. After several attempts of bleeding the brakes I just could not get the air out. I cleaned dirt and debris from lines and hoses and could not find a single drip of fluid anywhere. So I checked to see if i was getting air directly from Master by installing a hose at the nipple on the air pac. Sure enough plenty of bubbles. Replaced M/C. Bled brakes still pedal on floor except this time i could build and hold pressure, but as soon as you let off the pedal fluid and air comes surging through the resevoir, ok so I disassembled the air pac and found brake fluid in the piston chamber and also the o-ring on the compensating piston deteriorated as well as the activting piston seal cup for the air side was also deteriorated. I rebuilt the air pac and i am having the same issue no change in pedal. I can sit there and get about 4" of pedal if i bleed them and pump the stuffing put out them but as soon as you release the pedal and depress it again it goes straight to the floor. Any assistance on this matter would be greatly appreciated. I am already losing money on this job and at this point i just want to get my customers truck back up and running so he can put it back to work.
