r2d2rigo

@sheffieldcortinacentre thank you for your detailed answer! This kind of in depth knowledge is why I joined this forum :) I've found that Motomobil has a kit for the ATE cylinder, I'll order it soon and report back: master brake cylinder sealing kit (only for brake assistance, "ATE") @markymarkthree thanks, if I fail to replace the seals by myself I'll contact them for a repair.

Hi everyone, I've joined the forum recently because I have a Ford Taunus TC1 (post-facelift) and being so similar to the Cortina Mk3 I thought I could get the most help here :) I only drive it every 2-3 months and this time I noticed that the brakes feel soft. Thinking there are some bubbles in the system, I pumped the brakes a few times with the bonnet open and could see air bubbles rising in the rear part of the brake fluid reservoir. Upon closer inspection, there seems to be a leak in the union between the brake cylinder and the servo - you can see in the attached picture where the brake fluid has stripped out the paint from the servo and corrosion started to set in. I'm wondering if a new set of seals like FORD Cortina Mk3 Brake Master Cylinder Repair Seals Kit (With Servo) (1970- 76) | eBay UK would fix the issue? Sadly the plastic tag is missing from the cylinder and can't fully check if the parts are compatible.