Changing Track Polarity Inside The Locomotive; Locomotive Coupler Options - M.T.H. H9 2-8-0Steam 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

Locomotive Coupler Options

The 2-rail locomotive models do not
come with a rear coupler since many
2-rail enthusiasts may utilize
different coupler types on their 2-rail
locomotives and cars. Each tender
has pre-drilled holes for use when
installing a Kadee® scale coupler as
seen in Figure 5. Follow the
individual coupler installation
instructions when installing another
manufacturer's coupler system.
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.)
Figure 5: Pre-drilled Kadee® Coupler mounting holes
H9 2-8-0 Steam Locomotive
4