I replaced the master cylinder on my daughter‘s 92 Buick Lesabre. I bench bled the master cylinder and installed it. There are no leaks, everything looks good,and the brakes are no longer spongy, how big a deal is it not to bleed the brakes?
since you have eliminated all possible heat options, the only thing left is to bring them inside the residence and keep them confined to one area/room/box, etc
yep you do. all you did was get the air out of the master cylinder. you still have some air in the lines. you won,t have to bleed them too much though, not like if you did,nt bleed the master cylinder.
All they are doing is getting all the air out. A master cylinder is nothing more than a syringe like the ones used in the hospitals and even there the doctor pushes out the air before injecting the person. You don't really need a bench job. Most vehicle braking systems are designed to self de-aerate. You can also open each one of the bleed plugs located at each one of the brake cylinders and bleed them one at a time. The only difference is that the shops will try to recover the liquid which can get to be expensive.
I learned a trick 40 yeasr ago with master cylinders and i never had to bleed the brake system. I would use a pry bar and wedge it between the car seat and push the brake pedal to the floor. I then removed the lines and the old master while the new master was being bench bled in a vise. Once the new one was dripping from the ports with brake fluid, i would cap them and install the new master to the cars booster. Installed the lines and remove the pry bar. By removing the pry bar, any air in the system was drawn back into the master. i would top off the master and road test.I never once got air in the brake lines with this trick. If no pry bar, someones foot will work as long as they kept the pedal to the floor during the transfer. But i like the 1 man method better.20 minutes and your done. good luck.
