An investigation into A.C. electric locomotive centre pivot rubber failures (TM-DOS-127)

Reported bad riding on a.c. electric locomotives of Classes 81, 85 and particularly 86/3 (Class 86/0 is now restricted to 80 mile/h running) often coincides with partial collapse of the lower rubber cone of the Alsthom centre pivot assemblies, to drawings SL/DN/0-1034 (Cl. 86) and SL/DE/27657 and 27658 (others). The...