Hi, welcome to Just Answer. I'm acuramstr. the best way to get these off when they are stuck is with a 3/4 impact wrench with a good air supply and a deep socket with no adapters or extensions (takes away torque) . the bolt is right hand thread and it will come out but they get very tight . We have tried every trick in the book in my shop on these and the Big impact is the best way to handle this problem.