Side rods were never used.
Driver spring was changed from a bearing under the pedestal boxes
to a point over the boxes.
The pilot was attached in this manner:
Right forward wheel being loose, forward axle extended eight
inches beyond box on each side; to this was attached the beam of
the pilot, having play of about one inch between box and pedestal
plate to act while going around curves. The weight of forward part
of engine rested upon a cross brace of the two-wheel pilot, which
took bearing by a screw pin surrounded by a spring, by turning
which pin the weight on the drivers could be adjusted.
A brace used as a hand rail was added on top of the frame, bracing
frame and acting as a guide to the driving springs.
Water-cocks changed from right to left side of the boiler.
Bell, whistle and headlight were added.
Balance safety valve scale was changed forward to a point over
barrel of boiler, the secret valve being over the new dome.
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