The Ford Barn

SofaKing · 08-06-2016, 04:36 PM

I am looking for a solution to leaking wheel cylinders. They weep when the car is sitting. They are USA, NOS parts. They weep with new USA cups and the original USA cups which appear to be in remarkable shape. I cleaned the old packing fluid/ grease from the bores and seals and lubed everything with a light coat of new brake fluid.

I used the technique Dick Spadaro quoted in an old thread to clamp the pistons in place, all 4, and then bleed the system. I was also very careful to install the shoes in a balanced fashion so as not to displace the seals/pistons past the ports and induce a leak. It took several days but I find the new cylinders are leaking exactly like the old ones I replaced. The vehicle, 39 pu, has not moved since install. I am using Dot 3.

Before I ruin another day of my life I'd like to know if there is some other trick to getting these to work. Thanks.

08-06-2016, 04:36 PM	#1
SofaKing Senior Member Join Date: Jun 2014 Location: Salt Lake City, Utah Posts: 756	Static Leak of Wheel Cylinders I am looking for a solution to leaking wheel cylinders. They weep when the car is sitting. They are USA, NOS parts. They weep with new USA cups and the original USA cups which appear to be in remarkable shape. I cleaned the old packing fluid/ grease from the bores and seals and lubed everything with a light coat of new brake fluid. I used the technique Dick Spadaro quoted in an old thread to clamp the pistons in place, all 4, and then bleed the system. I was also very careful to install the shoes in a balanced fashion so as not to displace the seals/pistons past the ports and induce a leak. It took several days but I find the new cylinders are leaking exactly like the old ones I replaced. The vehicle, 39 pu, has not moved since install. I am using Dot 3. Before I ruin another day of my life I'd like to know if there is some other trick to getting these to work. Thanks.