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Brake caliper change issues
I have a 2011 F250 super duty. The passenger side brake caliper piston boot went bad and so I started changing it about 10 hours and 2 trips to the Ford store ago. After changing the caliper I started to bleed the brakes. First by gravity and then by using the buddy system. Unfortunately the lighting in my garage put a shadow on the side of the brake fluid reservoir which I mistook for the brake fluid level. it looked like there was some fluid in the reservoir so I filled it back to the top. After gravity bleeding until there was only fluid coming out and no bubbles. Then when the brake was depressed a whole lot of air came out. I closed the bleeder and then had my assistant let the brake up. I am still getting a lot of air after 15 cycles of buddy bleeding on the second time through gravity bleeding and then using the brake.
So I am now assuming the master brake cylinder has air in it. It feels like there is a bleeder on the back of the master cylinder.
Would I gravity bleed and then bleed each of the brakes to bleed the master cylinder?
Should I go get one of the pressurizing bleeder tools?
Am I eff'd and is it time to call the dealership?
I am really kicking myself for not looking down in the reservoir right now