M.T.H. EMD F40PH DIESELLOCOMOTIVE Operating Instructions Manual - Traction Tire Replacement
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F40PH Diesel Operating Manual
In addition to the truck block internal gearing, it is a good idea to lubricate the outside truck
block “idler" and “drive" gears with grease. Use the diagram shown in Fig. 9. above as a
guide and add grease to the points marked with a “G".
Periodically, check the locomotive wheels and pickups for dirt buildup as this can
significantly affect the engine’s ability to perform properly. Dirty track and dirty wheels can
cause both poor electrical contact as well as poor traction, especially on elevated track
sections. Finally, dirt and oil build up can prematurely wear out the neoprene traction tires.
TRACTION TIRE REPLACEMENT
INSTRUCTIONS
Your locomotive is equipped with two neoprene rubber traction tires on each power truck.
While these tires are extremely durable and long-lasting there may arise a time when they
will need to be replaced. Should this occur, you will need to remove the trucks and truck
sides on the truck block from the chassis in order to slip the new tire over the grooved drive
wheel. We suggest you follow the disassembly instructions found in the Lubrication section
on the preceding pages to dissemble the chassis and truck blocks from the body.
Before the new tire can be installed, you must make sure the old tire has been completely
removed from the groove in the drive wheel.
Use a razor blade or small flatblade
screwdriver pry away any remains left from the old tire that may still be in the drive wheel
groove. Once the old tire has been completely removed, slip the new tire onto the wheel.
You may find it useful to use two small flatblade screwdrivers to assist you in stretching the
tire over the wheel. Be careful to avoid twisting the tire when stretching it over the wheel. If a
twist occurs, the tire will have to be removed and reinstalled or a noticeable wobble in your
engine will occur when operating the locomotive. In addition, it is important to make sure
that the tire is fully seated inside the groove. Any portion of the tire extending out of the
groove can cause the engine to wobble. A razor blade can be used to trim away any excess
tire that doesn’t’t seat itself inside the groove properly.
Once the new tire(s) are in place, reassemble the truck sides to the truck blocks and then
reassemble the chassis to the body. Replacement tires are available directly from MTH
Electric Trains.
HEADLIGHT REPLACEMENT
The locomotive’s headlights are directionally controlled by the electronic components in
both the 3 and 2-rail equipped locomotives. The headlights can be easily removed from
their lampholders should the bulbs expire. To remove the bulbs, follow the cab removal
instructions found in the Lubrication section on the proceeding pages. Once the cab has
been separated from the chassis, gently remove the bulb from its mounting frame and
unplug its wire harness from the electronic boards inside the body. Replacement bulbs are
available directly from MTH Electric Trains.