RedHot71 Posted November 21, 2019 Report Posted November 21, 2019 I have a 1951 B3-J 2 1/2 ton dump truck that I had brakes in up until a month or so ago. It has been sitting for awhile to re-wire it. I went to hit the brake pedal to check brake lights & had no resistance. Brake fluid is a little low, but still 3/4 full in the master cylinder. New wheel cylinders and some of the lines have been replaced. There is no trace of leaking. I pulled the pipe plug for the Hydra-Vac & got brake fluid along w/a little pressure. Does that mean I need to replace or re-build that component? Quote
Dodgeb4ya Posted November 22, 2019 Report Posted November 22, 2019 Yes..the booster has failed and brake.fluid is being sucked into the intake manifold when you apply the brakes. I had one suck all the brake fluid out of the M/cyl while driving...complete loss of brakes? Quote
Cordell Posted November 22, 2019 Report Posted November 22, 2019 Good let me know where you find a replacement one! I well need one as well Quote
RedHot71 Posted November 22, 2019 Author Report Posted November 22, 2019 Thanks for the info. I was afraid of that. Now the issue is which one fits my truck. I found a site, (Cardone) for remanufactured units, but there are different #'s, but they all look the same. Quote
Dodgeb4ya Posted November 22, 2019 Report Posted November 22, 2019 The trucks use a Midland single diaphram frame mounted booster. I cannot remember the model number. I think Fords used the same on some of their trucks. Quote
John-T-53 Posted November 22, 2019 Report Posted November 22, 2019 Karps Power Brake in Upland, CA might be a resource to check out..... they rebuild boosters, sleeve cylinders, and reline shoes. 1 Quote
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