I fly for KLM, I fly the 747!!!
IT WAS A NOSEWHEEL STEERING METERING VALVE PROBLEM!!!!!
It doesn't LOOK like a nosewheel steering metering valve problem, it WAS a nosewheel steering metering valve problem!!
It wasn't a BRAKE problem, it was a nosewheel steering metering valve so no engineer should have an answer lined up about the brakes!!!!
Enough speculation as to what was the cause, IT WAS A NOSEWHEEL STEERING METERING VALVE PROBLEM!!!!!