Advanced passenger train (prototype) gearboxes. Monitoring of lubricating oil quality, including wear debris (TM-GLA-009)

During the APT-P commissioning trials, regular gearbox oil condition monitoring was carried out for a 16 month period, in an attempt to resolve the problem of frequent gearbox failure. In addition to the standard oil test procedure (physical testing and spectrographic analysis), ferrographic analysis was also carried out on samples...