Not a fun job on the Sony E-mount cameras, this is a full-blown teardown :(. I did the mount on my Sony a5000 and even had some trouble initially thinking I missed something when it looked like I did everything... I initially forgot the ground spring; it stuck to the plastic mount I pulled from the camera... DOH!!! I should have known! You just remove 4 screws from the front, ditch the plastic junk and original hybrid support metal piece which does nothing except hold the awful plastic mount. Makes the a5000, 6000 and hybrid NEX bodies a million times better and opens you up to running heavy lenses; even some of Minolta's best lenses of the 90s.
On these you generally work from the back to the front in many cases, sometimes the opposite for other parts like the lens mount assembly with the electronics. IF the front has to come off, you will probably need to remove the lens mount. At this point, if I was repairing this a6000 I'd probably swap the plastic mount with a metal TOUGH E-Mount LT from Fotodiox and improve the camera in the process to make these older hybrid cameras stable with heavy lenses and the LA-EA2 (Ex: LA-EA2+Minolta f4 beercan). The tight integration of these mirrorless cameras makes them worse than many DSLRs to repair, so plan ahead with this one.
This will be a bear of a job, but it can be done. Just a major heads-up from someone who has done cameras from Canon, Sony, and Minolta and gotten a few flash cap bites, and snagged a cheap Minolta 7 after repairing it; and later a 7D with the Alpha badge from Japan without the dreaded FFB/E58 issue you can't fix due to the part being EOL.