Configuring Locomotive for
2-Rail or 3-Rail Operation
Installing/Removing 3-Rail Pickup Rollers
Both 2-Rail and 3-Rail versions of this locomotive can be configured to opperate
on either 2-rail or 3-rail track by removing or adding the center rail pickups. 3-rail
rack operation requires the pickups, 2-ral track operation does not. The pickups
are factory installed on 3-rail versions and packaged seperately in the locomotive
box for 2-rail versions. Each pickup roller installs with a single phillips screw.
Once you have configured the engine for 2-rail or 3-rail operation, you must
manually select the power input switch located on the bottom of the tender fo r 2
rail operation as seen in Figure 1.
Configuring for 2-Rail or 3-Rail Power Input
2-Rail/3-Rail Switch
Figure 1
USRA 0-8-0 Steam Locomotive
3
Ensuring Proper Power to Track Polarity
For 2-rail DCS operation, it is important that the polarity from the transformer to
the engine is properly configured. Correct polarity can be accomplished by
ensuring that the wiring from the TIU to the track and orientation of the
locomotive when sitting on the track follows the illustration in Figure 2.
To TIU Black Terminal
To TIU Red Terminal
Figure 2
