Thread: Brake pistons, Steel V's Synthetics?

I posted recently about my AU 11 having 'sticking' brakes and what transpired.
This wasn't the first set of 'Shoes' put on the wagon over the last 8 years but was the most difficult.
To cut to the chase, we had to not only clean out all the old accumulated crud (not unexpected) but we had to replace the pistons in both calipers.
The 'original' pistons appear to be made of some composite material not unlike bakelite and although we cleaned and polished everything, they simply wouldn't slide back into the chamber when the pedal was released.
We replaced one side first with a steel pair and when we saw the effect, we got a second set and now the brakes appear to be functioning normally.
We tried using new seals on the old composite pistons without success so reused them with the new steel pistons.
This is when living out of town, a weekend and the local brake shop has to order in the parts slows down a few hour simple job to take several days.
The only good thing was it didn't snow or blow a gale during the 'down time'.