3020 Brakes

Side console 3020...replaced #1-10 because boots were crusty and springs were broken. Bled brakes per manual. Brakes worked fine beforehand, but now they are locked up and tractor will not move... What's wrong??? Should oil be coming out bleeder screws???
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I'll bet the bleed screws allow the air/oil to bleed internally like my 4020 does. See if tractor will move with both bleed screws two turns out, if so might still have trouble in the brake valve.
 
Did you bleed each brake bleed valve for at least two minutes plus. You need to get all the air out of the system.. If so, then you have the left and right inlet valves leaking when released, causing the brakes to lock-up when they should be free.. Tear the brake valve apart again and check these two valves???
 

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