A. First, shut off pressure to stoker engine cylinder by closing valve
6. Second, move operating valve lever 10 to its lowest position. Third,
place tender conveyor reverse lever 12 in center. Fourth, place right
elevator pawl shifter 26 in neutral position. Fifth, raise operating
valve lever 10 to center position. Sixth, open valve 6 sufficiently to
run left elevator to ascertain if it operates freely. Cut in right
elevator by lowering pawl shifter 26, and if stoker stops, the
obstruction is in the right elevator. If it continues to operate, then
the obstruction is in the tank conveyor.