George has completed the arduous task of rebushing the brake hanger for NCB No.69.
Here he is seen testing the 'swing' of the right leading 'RL' brake hanger to identify any areas that require precise filing to eliminate rocking.
George then sets up the brake hanger in the Bridgeport milling machine to bore out the out bush that holds the brake block pin.
Completing this, he machines a new bush with an interference fit of 0.001" and a 3/16" lead in that is 0.004" undersize to aid in alignment. (old bush shown for severe oval of pin hole)