Had the most strange problems occuring on back brakes.
Everyting is renovated is renovated into bits and pieaces.
All brakes are working fine, at least what I was aware of.
However, when driving I can hear one of the back brakes lock (however I determine which one, as it change over time..).
Decided to look into details, and was so surprised.
Master cylinder has been renovated once, with bushings repleced and cylinder reconed etc. Its as close to OEM it can ever be. The same with the brake cylinders. They are all renovated with coning, new bushings and things are really OK.
Nevertheless, when bleeding the brake fluid I discover a VERY strange behaviour.
The brake cylindrer is pressed out, but when preassure is gone it is still there.
Brake springa are obviusly not able to return the brakes!!??
I have (almost...) gone crazy and put apart all cylinders, went through all bushings, checking for leaks, bleediing all brakes (several times, and again..) but havent found any proböems.
Until NOW!
Obviously the rubber brake hose has ”melted”, as rubber does over long time.
The inside diameter should normally be 0.5mm (free level), but in my case it was more or less zero!!!!
The brake flyuid (with enormous preassure downwards..) managed to het out, but was’nt returning after preassure was released.
I cut the rubber line and found out this. Look at the photos.
This week I bought new lines, and suddenly my back breakes are working!!!
