The Stovebolt Site Forums The Shop Area Engine Shop 50 model brakes

Bought this old 50 model, got it running, and installed rebuilt master cylinder. Used a vacuum device to bleed brakes, but was able to get fluid only on left front. Had my wife assist me to use old pump up method to bleed other 3 wheels, but was unable to get any fluid out of any of the other three. Previous owner said he installed new wheel cylinders. Petal does not go to floor now, and LF wheel does stop vehicle, but I don't want to drive until it's right. So, where would you recommend I start?

You don't say how long it's been setting but I assume it's been awhile. When I bought my '52 1/2-ton it had been sitting for years. I replaced brake lines, master, wheel cylinders... everything! Make sure the bleeders aren't clogged, make sure the lines aren't rusted shut (brake fluid draws moisture.) Pull a brake line off a wheel cyl and see if you have fluid there.
You don't have a lot of room for error if it is all original... I wouldn't want to take a chance with old parts.
Jim

I agree with Jim, you really can't be too careful. DOT3 brake fluid draws moisture bad and the brake lines (tubing) rust from the inside out. The bleeder screws are probably clogged. Remove each of them and clean out with a piece of wire. With bleeder out pump brake pedal and see if line is clogged. It would be best to pull all wheels and drums and inspect everything. The 50 3/4-ton I have now had been sitting up for maybe 20 years or more. Every wheel cylinder was frozen, corroded solid. I was able to disassemble each of them and rehab them, honing the cylinders and putting in new kits (rubber), and am in the process of replacing all the tubing and hoses. Your problem may not be that severe, but I recommend caution. Good luck.