After totally overhauling the front and rear brakes, I was able to successfully bleed the rear brake circuit and the rear brakes work well. The front brakes are a diffent story - despite bleeding out the air, no brake pressure is generated to operate the pistons.
I have the original Girling tandem master cylinder type 68663 and surmise that there must be some internal leakage around the first piston. This master cylinder is now obsolete but I have been able to source a seal kit (Part No. SP2486) but wonder how difficult it will be to successfully replace the seals. My car is low mileage so I am hoping there will not be too much internal wear.
Does any one have a diagram of the internals or advice on how to do this job? Alternatively recommend an aftermarket master cylinder.
Thanks in advance
It's an easy enough job. There's plenty of stuff on doing it here:
http://www.gomog.com/BLAIR/tech/mbrakes/art010_1.html