Strip inspection of APT-P trailer HK brakes no A79M and A116M - bearing failures in service (TM-PBS-059)

APT-P trailer hydrokinetic brakes A79M and A116M were both removed after failures whilst running on the West Coast Main Line. A116M failed at the end of October 1983, after 35,000 miles, during high speed pantograph tests which included some running at over 240 km/h. A79M failed in mid February 1984...