Fareastdriver,
From my training, and memory, as an A Fitt A in the late 69/70s I believe that the "Maxaret" anti skid system was based around a flywheel driven hydraulic valve in the brake system, which had its own track around the inside hub of the main wheels. That being the case I suspect that the "D" lugs shown on the photographs do not relate to anti skid. I wonder if, as an aircraft that might land on grass strips etc, this might be some form of mud scraper/remover, designed to prevent an excessive build up, possibly causing ground control problems ? I'm not sure, I do know someone on PPRUNE will though.
All the best
Smudge
