The complete network of components responsible for delivering traction sand from the storage boxes to the railhead. This includes the pneumatic valves, air lines, delivery pipes, and alignment brackets that aim the nozzles at the wheels. Car knockers and shop crews must regularly inspect the gear to ensure the nozzles are aligned properly and the pipes are free of clogs or moisture.
Heard on the job
Shop notes say the sanding gear on the trailing unit is clogged with wet grit and needs blowing out.