Changing Track Polarity Inside The Locomotive - M.T.H. USRA 0-8-0Steam Locomotive Operator's Manual

Changing Track Polarity Inside the Locomotive

Failing to properly configure the polarity will result in the locomotive starting in
reverse instead of forward or not receiving the DCS signal. Should this occur, it is
not necessary to swap the wires from the transformer to the track or reverse the
locomotive's orientation on the track itself. Instead, simply slide the polarity
switch located on the tender as seen in Figure 3.
Figure 3
DCS Polarity Switch
(The DCS Polarity Switch should be moved
forward when the Red Terminal of the TIU is
connected to the right hand rail and to the
rear when the Red Terminal is connected to
the left hand rail.)
USRA 0-8-0 Steam Locomotive
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