Front Brake Operating Pin Issue

[BillCNC]

Hey All,

For the last two days, I have torn my brake system completely apart trying to find a scraping issue when I hit the brakes. Also, my brake pedal wouldn't return fully and I'd have to manually lift it with my foot.

I found that my floaters on the drivers front needed to be loosened a little and that fixed that. But the real puzzler as the scraping issue. It turned out to be the drivers side operating pin. It was scraping something on the top causing a burr that the pin would scraped then hang up on. My only remedy until I figure the cause was to file the burr down and flip it end over end and reinstall.

What would cause an operating pins side to be scraped?

Regards
Bill