I acquired a mostly complete but blown apart Sonerai IIL project (1983 start date) last summer and just started going through everything this week. I've got what appears to be a set Azusa Tri-Star 5" cast aluminum wheels mounted on 3/4" ID axles with tapered Timken roller bearings. All seems to be standard stuff for a vintage Sonerai. However, both wheels have what appears to be a hydraulic drum brake of a type I have never seen before. Can anyone tell me who the manufacturer of these brakes is and where I can find a manual/overhaul instructions/parts for these brakes. Thanks in advance,
Mitch
Mitch