Locked door
Not exactly correct.
The first few were due to the wheel bearings packed with the wrong grease.
The last one, was due to the wheel being dipped in solvent to degrease it before assembly. The sintered heat shield within the wheel acted like a sponge and soaked it up. Usually after assembly, the wheel would go in to stores for a while and the solvent would evaporate. On this occasion the wheel came straight from the workshop and was fitted on the line before the aircraft operated to MAN.