It has wet brakes per serial # G4v05998J. S100 FTBCS
I was informed that if dot 3 was used instead of ATF in the reservoir the brake piston seals will swell up causing the b piston to hang. I don t think this is the case although we have not looked @ the b reservoir fluid yet. We just started working on this unit & don t know the history except they purchased @ auction.
When I drove unit it seems the booster pressure is too high. Brakes don t drag when you release so I don t think its piston related.
Can the booster relief pressure be adjusted??? Or maybe inching overlap pressure adjustment??