there is a good YouTube video "6024 King Edward I attains 2000 (Draw bar horse power) on Wilmc".The video is by "psovmainline". It is a split screen with video in the cab and from outside. The question I have is: at 1:38 the Driver has just shut the Regulator and is opening it for maximum drawbar pull. BUT at the same time he does not let up swinging a lever underneath the Reverser Screw. The question is : What is that lever ??
Could it be the sanding lever and it requires stroking to maintain the flow of sand ?
thanks in advance,
Bruce