The Ford Barn

bill41ford · 04-12-2025, 07:11 AM

The 41 coupe rebuild is proceeding and I am getting the details done for it to move around on its own. I have been working on this car for a while and have done a body off rebuild. I completely replaced and rebuild all suspension and brake parts - stainless brake lines, new master and wheel cylinders and brake parts. This all took place a couple years ago and I left the brakes dry since then. I have progressed through the rest of the rebuild to the point of putting brake fluid in. I am using dot5 silicone brake fluid. I filled master cylinder and slowly pumped brake pedal, then added brake fluid and pumped pedal just to get some fluid into the lines. Got to the point of bleeding and pumped the pedal a couple times and lost the pedal - the one front brake cylinder failed and leaked brake fluid out.
Any ideas on why a brand new cylinder would fail - the wheel cylinders were listed as made in USA when I bought them. I have not dissasembled the failed cylinder yet. I will do that today. Any ideas or suggestions would be appreciated, thanks.

04-12-2025, 07:11 AM	#1
bill41ford Member Join Date: Jun 2021 Location: Pa. Posts: 56	New wheel cylinder fail The 41 coupe rebuild is proceeding and I am getting the details done for it to move around on its own. I have been working on this car for a while and have done a body off rebuild. I completely replaced and rebuild all suspension and brake parts - stainless brake lines, new master and wheel cylinders and brake parts. This all took place a couple years ago and I left the brakes dry since then. I have progressed through the rest of the rebuild to the point of putting brake fluid in. I am using dot5 silicone brake fluid. I filled master cylinder and slowly pumped brake pedal, then added brake fluid and pumped pedal just to get some fluid into the lines. Got to the point of bleeding and pumped the pedal a couple times and lost the pedal - the one front brake cylinder failed and leaked brake fluid out. Any ideas on why a brand new cylinder would fail - the wheel cylinders were listed as made in USA when I bought them. I have not dissasembled the failed cylinder yet. I will do that today. Any ideas or suggestions would be appreciated, thanks.