W123-240D steering wheel lock locked-nothing works anymore!!

Hello, I’ve had a big problem for a few minutes now. I’ve got the steering wheel lock of a 240D built in 1983 and I can’t get a turn in the ignition lock with both keys anymore… I’ve already dismantled the lining under the steering wheel, but a flash of mind to solve the problem didn’t come to me. Since I parked behind 2 other cars (family) that’s a bit “dumb”…. Can anyone give me a tip on what I can do? Graphite in the lock has unfortunately nothing to do with it. Thank you very much.