These are pictures of both sides of the bottom bracket I have
I had the bottom bracket bearings replaced by a bike shop less than 500 miles ago because they were worn out and causing a loud knock throughout the frame.
Now, there is a distinct scraping sound coming from the same area. The scraping sound is there when using either of the chainrings, with heavy and light tension on the chain, but only when I am in the saddle. Out of the saddle, no scraping.
I want to learn how to remove and replace the cranks and bearings myself because I am tired of bike shops f**king me over.
What tools do I need and how do I remove the cranks and bearings? The only part I see that a tool could go into is the 10mm hex on the right side.
Any info anyone has would great. thanks.