M.T.H. PREMIER U50C User manual

PREMIER U50C
DIESELENGINE
OPERATING INSTRUCTIONS
This U50C Diesel Engine features a detailed ABS body, die-cast trucks and runs on O-72
curves. This Premier Diesel Engine contains state-of-the-art electronics with many
built-in automatic features for incredibly realistic operation. Despite these advanced
features, the locomotive is easy to operate with any compatible standard AC transformer
that is equipped with whistle and bell buttons (see the compatibility chart on page 20),
and is compatible with most other 3-rail locomotives, rolling stock, and accessories.
This locomotive is equipped with Proto-Sound 2.0 with Digital Command System
(DCS). This new system will allow you to operate your locomotive in Command mode
(when used with the DCS Remote Control System, sold separately) or Conventional
mode. Conventional operating features are described in the following pages, while the
DCS operating features are covered in the set of operating instructions that
accompanies the DCS equipment. Conventional Mode operation of this locomotive is
much simpler than operation of original Proto-Sound engines. For your own safety and
that of your equipment, please read the instructions before you operate this engine.

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Premier U50C Diesel Engine Operating Instructions
Table of Contents
Set Up 3
Basic Operation 4
Operation Buttons 4
Throttle 4
Volume Control 4
Proto-Sound 2.0 Operation 5
Activating Proto-Sound 2.0 Conventional Mode Features 5
Freight Yard Sounds (FYS) 6
Tips on Using FYS 7
Proto-Coupler®Operation 8
Speed Control 8
Lock into a Direction 9
Reset to Factory Defaults 9
Automatic Sounds 9
Maintenance 10
ProtoSmoke Unit Operation 10
Lubrication and Greasing Instructions 12
Locomotive Traction Tire Replacement 13
Locomotive Light Bulb Replacement 14
Self-Charging Battery Back-Up 16
Troubleshooting 17
Compatibility 19
TransformerCompatibilityChart 20
Additional Features with DCS Remote Control System 21
SafetyPrecautions 23
Service and Warranty Information 24

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Premier U50C Diesel Engine Operating Instructions
Set Up
There are a couple of simple steps you must take before operating this Premier
diesel.
1. Although the engine was lubricated at the factory, it is important that you
lubricate the chassis before operation. Lightly grease the outside idler and
drive gears (marked “G” in Fig. 7 on pg. 13) with lithium-based grease to
prevent them from squeaking. Use light household oil and follow the
lubrication points (marked “L” in Fig. 5 on pg. 12). Do not over-oil. Use only
a drop or two on each pivot point.
2. Prime the operating smoke unit with smoke fluid before operating. Add
15-20 drops of smoke fluid through the smokestack (see Fig. 2 on pg. 10), then
gently blow into the stack to eliminate any air bubbles in the fluid. Only the
front stack produces smoke, make sure you only add fluid to the front stack.
3. If you choose not to prime the unit with fluid, turn the smoke unit switch
located under the engine to the OFF position (see Fig. 3 on pg. 10). Running
the engine without a primed smoke unit may cause damage. See the
“ProtoSmoke Unit Operation” section of this book for more information on
smoke unit maintenance.
At this point, you are ready to put your engine on the track and begin running
it.

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Premier U50C Diesel Engine Operating Instructions
Basic Operation
Throttle –Throttle up the power to your track. Give about 10-12 volts or
enough power so that the engine’s headlight shines brightly. Then put the
engine into motion by either firmly pressing the Direction button on your
transformer or remote once or dropping and advancing the throttle to put the
engine in forward.
Operation Buttons
Use the operation buttons on your transformer or remote as described below.
Horn/Whistle - To sound the horn, firmly press the Horn/Whistle button. The
horn will sound for as long as you continue to depress the button. It will stop
when you release the button.
Bell - To sound the bell, firmly press and release the Bell button. To turn the
bell off, press and release the Bell button again. The bell will continue to ring
from the time your turn it on until you press and release the button again to turn
it off.
Direction– Your train is programmed to start in neutral. To put the engine
into forward and then to change the direction of the train or to put it into
neutral, firmly press and release the Direction button on your transformer. Just
as you must stop your car between forward and reverse, this engine will not go
directly from forward to reverse; it goes into neutral between directions. If the
train has been moving forward, the first press of the Direction button will put
the train from forward into neutral, the second press into reverse, the third press
back into neutral, and the fourth back into forward. To prevent accidental
high-speed start-ups, this engine is programmed to restart in neutral each time
the track voltage is turned off for 10 seconds or more.
Volume Control – To adjust the volume of all sounds made by this engine,
turn the master volume control knob located under the engine clockwise to
increase the volume and counter-clockwise to decrease the volume (see Fig. 1).
Proto-Sound 2.0
Volume Adjustment Knob
Figure 1. Adjusting the Proto-Sound 2.0 Volume

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Premier U50C Diesel Engine Operating Instructions
Proto-Sound 2.0 Operating Instructions
This manual contains the operating instructions for Proto-Sound 2.0 in
conventional mode only. Instructions for accessing DCS command mode
features accompany the DCS Remote Control System equipment.
Because Proto-Sound 2.0 is an all-new system developed by M.T.H.’s own
research and development team, it operates differently from original
Proto-Sound. Most Proto-Sound 2.0 features are automatically enabled, and the
reset state has been eliminated, so there is no need to program features as with
original Proto-Sound. Although the new system is easier to operate than
original Proto-Sound, you should read these instructions thoroughly before
using Proto-Sound 2.0 features in order to prevent harm to yourself or your
equipment.
Activating Proto-Sound 2.0 Conventional Mode Features:
Proto-Sound 2.0 features are activated by sequences of Bell and Whistle button
pushes described below. Please read the full descriptions of each feature
before using it. To use these buttons to activate features rather than to blow
the whistle or ring the bell, you should press the buttons for a shorter time (1/2
second); you may need to practice your timing to make this work smoothly.
Feature to Be Activated:
Freight Yard Sounds
FiretheRearCoupler
Fire the Front Coupler
Speed Control On/Off
LockintoaDirection/Unlock
Reset to Factory Defaults
Button Code:
1 Bell, 2 Whistles
1 Bell, 3 Whistles
1 Bell, 4 Whistles
1 Whistle, 2 Bells
1 Whistle, 3 Bells
1 Whistle, 5 Bells (From Neutral Only)
(From Neutral Only)
FYS Code Timing
Total Time Lapse: 1 Seconds½
Tap
Bell
Quickly ½ Sec.
Pause ½ Sec. Pause
Tap
Whistle
Quickly
Tap
Whistle
Quickly

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Premier U50C Diesel Engine Operating Instructions
Freight Yard Sounds (FYS):
Your engine is equipped with a sound package of freight yard sounds that you
can play when you pull into a yard. Each sequence described below will
play as long as it is left on, randomly generating sounds, but be sure to
allow approximately 30 seconds between the button pushes described
below to allow the FYS sufficient time to run through each sequence.
1. To cue the sound system to play the FYS, quickly but firmly tap the Bell
button once followed by 2 quick taps of the Whistle button while the engine is
moving. Tap the buttons quickly but allow approximately ½ second between
each press.
2. Press the Direction button or drop and advance the throttle once to stop the
engine. This will trigger the first sequence of FYS. The reverse unit is
temporarily disabled so that the train will not move as you use the Direction
button to trigger the sounds, and Proto-Sound 2.0 has disabled operator control
over the Whistle and Bell buttons until the full FYS sequence is complete.
3. After waiting about 30 seconds for that sequence to run, press the Direction
button again to trigger the second sequence of FYS.
4. After about 30 seconds, press the Direction button again to trigger the third
FYS sequence.
5. Again, after allowing about 30 seconds for that sequence to run, press the
Direction button one more time to trigger the fourth and final FYS sequence.
The FYS will continue, and within a few seconds, the engine will start and
move out on its own at the current throttle setting, in the same direction it was
traveling when you began the sequence with the bell ringing. Once the bell
turns off, the operator regains control of the transformer’s bell and whistle
buttons and can ring the bell or blow the whistle as usual.

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Premier U50C Diesel Engine Operating Instructions
Tips on Using FYS
• You can terminate FYS at anytime by turning off power to the
track for 15 seconds.
• You do not have to be in Forward to use FYS. At the conclusion
of the full sequence, the train will pull away from the station in
whatever direction you were going when you activated the feature.
• You can use FYS even if you are double-heading with another
engine. If the second engine is not equipped with FYS at all, you
must remember not to leave the throttle at a high voltage level once
you have stopped the engine to run the FYS. Otherwise, the engine
without FYS will begin vibrating on the track as its motors strain to
move the train, since they cannot be automatically disabled during
the FYS cycle. If the second engine is an original Proto-Sound
engine equipped with FYS, you may choose to disable it when used
in double-heading operations, so you will not experience
competing FYS sounds. To disable FYS in an original
Proto-Sound engine, see the operating instructions for that engine.
• FYS can be triggered from Neutral. It will operate the same as if
triggered while in motion except that, at the conclusion of the FYS,
the engine will depart in the next direction of travel, as opposed to
the direction it was traveling before entering Neutral.

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Premier U50C Diesel Engine Operating Instructions
Proto-Coupler® Operation
This locomotive is equipped with two coil-wound Proto-Couplers for remote
uncoupling action. Because the Proto-Coupler is controlled through the
Proto-Sound 2.0 microprocessor, it does not require an uncoupling track
section or modification to your layout to function. Use the codes listed below
to fire the coupler.
Rear Coupler:
To fire the rear coupler, quickly tap the Bell button once followed by three
quick taps of the Whistle button, allowing approximately ½ second to lapse
between each quick button press. The sound of the liftbar and air line
depletion will play, and the knuckle will be released.
Front Coupler:
To fire the front coupler, quickly tap the Bell button once followed by four
quick taps of the Whistle button, allowing approximately ½ second to lapse
between each quick button press. The sound of the liftbar and air line
depletion will play, and the knuckle will be released.
Speed Control:
M.T.H. engines equipped with Proto-Sound 2.0 have speed control capabilities
that allow the engine to maintain a constant speed up and down grades and
around curves, much like an automobile cruise control. You can add or drop
cars on the run, and the engine will maintain the speed you set.
While the engine is programmed to start with the speed control feature
activated, you can opt to turn it off. This means the engine’s speed will fall as
it labors up a hill and increase as it travels downward. It is also affected by the
addition or releasing of cars while on the run.
To turn speed control on and off, put the engine in neutral, thenquickly tap
the transformer’s Whistle button one time then quickly tap the Bell button two
times, allowing approximately ½ second to lapse between each quick button
press. Two horn blasts will indicate that the engine has made the change.
Repeat the 1 whistle, 2 bells code to return it to the other condition. Youwill
want to do this during the initial neutral upon start-up if you ever couple
this engine to another engine that is not equipped with speed control to
avoid damaging the motors in either engine. Each time you shut down the
engine completely, it will automatically turn speed control on. Note: When
speed control is turned off, the Proto-Sound 2.0 system will limit the volume
in order to operate more smoothly at lower voltages. Full volume is restored
upon reactivating speed control.

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Premier U50C Diesel Engine Operating Instructions
Lock into a Direction:
You can lock your engine into a direction (forward, neutral, or reverse) so that
it will not change directions. To do this, put the engine into the direction you
want (or into neutral to lock it into neutral), run it at a very slow crawl (as
slowly as it will move without halting), and quickly but firmly tap the Horn
button once followed by three quick taps of the Bell button, allowing
approximately ½ second to lapse between each quick button press. Two horn
blasts will indicate that the engine has made the change. The engine will not
change direction (including going into neutral) until you repeat the 1 horn, 3
bells code to return the engine to its normal condition, even if the engine is
kept without power for extended periods of time.
Reset to Factory Defaults:
To override the settings you currently have assigned to the engine and reset it
to its factory defaults, while in Neutral tap the Whistle button quickly once,
followed by five quick taps of the Bell button, allowing approximately ½
second to lapse between each quick button press. Two horn blasts will indicate
that the engine has made the change.
Automatic Sounds:
Certain Proto-Sound 2.0 sound effects automatically play in programmed
conventional mode conditions:
Squealing Brakesplay when the engine’s speed is decreased rapidly.
Cab Chatter plays when the engine idles in neutral.
Engine Start-up and Shut-downsounds play when the engine is initially
powered on or is powered off for five seconds or more.

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Premier U50C Diesel Engine Operating Instructions
Maintenance
ProtoSmoke® UnitOperation
This Premier diesel locomotive contains a self-powered smoke unit that outputs
smoke through the smokestack on the roof of the engine. The smoke unit is
essentially a small heating element and wick that soaks up and then heats a
mineral oil-based fluid that emits a harmless smoke. The smoke is then forced
out of the stack by a small electric fan. Smoke volume is controlled by the
Proto-Sound 2.0 system.
With a few easy maintenance steps, you
should enjoy trouble-free smoke unit
operation for years.
When preparing to run this engine, add
15-20 drops of smoke fluid through the
smokestack (see Fig.2). We recommend
M.T.H. ProtoSmoke, Seuthe, LGB, or
LVTS fluids. Do not overfill the unit or
the fluid may leak out and coat the interior
engine components. This applies only to
the front smoke stack. Do not add fluid to
the rear smokestack.
If you choose not to add the fluid (or have
already added the fluid but choose to run
smoke-free), turn off the smoke unit switch
located under the engine (see Fig. 3).
Failure either to add fluid to the unit or to
turn it off may damage the smoke unit
heating element and/or wicking material.
When the smoke output while running the
engine begins to diminish, add another
10-15 drops of smoke fluid or turn the
smoke unit off.
Add Smoke Fluid
Through Smokestack
Figure 2. Add Smoke through the
Smokestack
SmokeUnit
ON/OFF Switch
Figure 3. Smoke Unit ON/OFF
Switch

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Premier U50C Diesel Engine Operating Instructions
When storing the unit for long periods of
time, you may want to add about 15 drops
of fluid to prevent the wick from drying
out.
After removing the engine from storage,
add another 25 drops of fluid, letting the
wick soak up the fluid for 15 minutes prior
to operation.If you experience poor or no
smoke output when the smoke unit is on
and has fluid, check the wick to see if it has
become hard, blackened, and unabsorbent
around the heating element. Remove the
smoke unit inspection cover from the
smoke unit’s body (see Fig. 4). After
removing the chassis and inspection cover
screws, lift the inspection plate away and
inspect the wick. If it is darkly discolored and hard, it should be replaced.
Replacement wicks are available from the M.T.H. Parts Department.
Inspection Cover
Screws
Figure 4. Inspecting the Smoke Unit

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Premier U50C Diesel Engine Operating Instructions
Lubrication and Greasing Instructions
The engine should be well oiled and greased in order to run properly.
You should regularly lubricate the engine to prevent it from squeaking. Use
light household oil and follow the lubrication points marked “L” in Fig. 5. Do
not over-oil. Use only a drop or two on each pivot point.
The locomotive’s internal gearing was greased at the factory and should not
need additional grease until after 50 hours of operation or one year, whichever
comes first. Follow the greasing instructions below. Note that in some tightly
packed engines you may need to move internal components temporarily in
order to access the gears.
1. To access the gear box, remove the cab from the chassis by unscrewing the
chassis screws as seen in Figure 6 and lifting the cab from the chassis.
2. Once the body is removed, remove the trucks by unscrewing the black
Phillips motor mount screw located on the underside of the drive trucks (see
Fig. 7).
3. Once the motor mount screw has been removed, pull the motor away from
the truck block and lightly coat the motor worm gear and bronze drive gear (in
the truck block) with grease.
Lubricate Pick Up
Roller (L) Lubricate Pick Up
Roller (L)
Figure 5. Lubrication Points on the Locomotive
Body Mount Screws
Body Mount Screws
Figure 6. Locations of the Body Mounting Screws

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Premier U50C Diesel Engine Operating Instructions
4. Reassemble the truck and motor, being careful not to pinch any wires
between the truck block and motor mount.
5. After repeating the procedure for the other motor, reassmble the chassis and
body, being careful that the wire harnesses are not caught between the chassis
and body and reinstall the chassis screws.
Lubricate the outside truck block idler and drive gears with grease. Use the
diagram shown in Figure 7 above as a guide and add grease to the points
marked with a “G.”
Periodically check the locomotive wheels and pickups for dirt and buildup,
which can cause poor electrical contact and traction as well as prematurely
wear out the neoprene traction tires.
Traction Tire Replacement Instructions
Your locomotive is equipped with two neoprene rubber traction tires on each
powered truck block. While these tires are extremely durable, you may need
to replace them at some point.
First, remove the truck sides from the truck block.
To do this, turn your engine upside down. If there
are visible Phillips screw heads between the truck
frame and truck block (see Fig. 8), go to step A. If
not, go to step B.
A. Remove the two Phillips screws that attach the
truck sides to the truck block.
B. Remove the trucks from the chassis and the
truck sides from the trucks in order to slip the new
tire over the grooved drive wheel. See Fig. 8 for which screws you must
remove to do this.
Grease Idler Gear (G)
MotorMountScrew
Figure 7. Locations of Greasing Points on the Locomotive
Truckside Mounting Screws
Figure 8. Truckside
Mounting Screws to Access
the Traction Tires

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Premier U50C Diesel Engine Operating Instructions
LightReplacementInstructions
The locomotive’s lighting is controlled by a constant voltage circuit in the
engine. The lights are easy to replace when they burn out. The bulb has a
quick disconnect plug that attaches the bulb harness to a light circuit.
Replacement bulbs are available directly from the M.T.H. Parts Department.
Follow the body removal instructions found in the Lubrication and Greasing
Instructions.
Gently disconnect the bulb harness from the socket on the constant voltage
circuit and replace the bulb.
Once the truck sides have been removed:
1. Make sure the old tire has been completely removed from the groove in the
drive wheel, using a razor blade or small flathead screwdriver to pry away any
remains.
2. Slip the new tire onto the wheel. You may find it useful to use two small
flathead screwdrivers to stretch the tire over the wheel.
3. If you twist the tire while stretching it over the wheel, you will need to
remove and reinstall the tire. Otherwise your engine will wobble while
operating.
4. Make sure the tire is fully seated inside the groove. Use a razor blade to
trim away any excess tire that will not seat inside the groove properly.
5. Reassemble in the reverse order.
One set of replacement tires is packaged with your model. Additional sets are
available directly from the M.T.H. Parts Department (phone: [phone];
e-mail: [email protected]; mail: 7020 Columbia Gateway Drive,
Columbia MD 21046-1532).
Wire Harness Plug
Replaceable
Light
Figure 9. Replacing the Lights in your Engine

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Premier U50C Diesel Engine Operating Instructions
To replace the lights mounted to the inside of the shell, remove the shell, and
slide the spring contact bracket off of its post. Remove the light bulb and
wires taking care to notice the path that the wires take on the inside of the
shell. Replace the bulb and reassemble the engine.
Spring Contact Bracket
Figure 10. Replacing the Lights Mounted on the inside of the Shell

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Premier U50C Diesel Engine Operating Instructions
Self-Charging Battery Back-Up
The special NiCad 7-cell 8.4v self-charging battery in this engine improves
performance at any speed. It ensures that power to the sound system will
remain on during directional changes, or when travelling over dirty track or
switches. The self-charging battery system is automatically turned on or off
whenever track power is turned on or off.
Track power (when applied) recharges the battery, which should last for up to
five years, and the special NiCad battery is a dry battery that should not leak
or cause any damage to your engine. However, even this special battery will
eventually wear down and need to be replaced. When you notice that your
engine sounds seem distorted or garbled at low voltages or become silent
when power from the transformer is turned off, test the battery to determine
whether it should be recharged or replaced.
• Put the engine in neutral and leave the track voltage at 12 volts for 15
minutes
• If the garbled or distorted sounds are reduced, the battery charge has run
down and can be recharged. Do this by leaving the engine in neutral with
track voltage at 12 volts for 6-7 hours so the battery can fully recharge (if your
engine has a smoke unit, be sure it is turned off). Or you can remove the
battery (as described below) and charge it in any standard slow charge battery
recharger, following the recharger’s directions.
• If the sounds are not improved at the end of the 15 minute test charge, it is
time to replace the battery (see directions below). Contact the M.T.H. Parts
Department (phone: [phone]; e-mail: [email protected]; mail:
7020 Columbia Gateway Drive, Columbia MD 21046-1532) for a replacement
battery. A standard 9v alkaline battery can be substituted until your
replacement arrives, but since alkaline batteries cannot be recharged, it will
eventually wear down. Do NOT use a 6-cell 7.2v battery like those found in
most convenience stores.
Unhook wires, unscrew bracket,
removebattery, andreplace
Figure 11. Replacing the Battery (Remove all four screws on the fuel tank to access the
battery.

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Premier U50C Diesel Engine Operating Instructions
Starting Up
Horn
Bell
Coupler
Remedy
Remedy
Remedy
Remedy
Remedy
When I first turn the power on, the
engine will not begin to run. I have to
turn the throttle off and then on again
to get the engine to operate.
When I press the whistle button, the
bell comes on instead.
I can’t get the horn to blow when I
press the whistle button.
I can’t get the bell to ring when I press
the bell button.
The bell won’t work on a separate bell
button.
When I try to fire the coupler, FYS
starts.
The Proto-Coupler won’t let the engine
uncouple on the fly.
The coupler does not fire or stay
coupled.
When I press the whistle button, the
bell sounds.
Reverse the transformer leads.
You may be pressing the button too
quickly. Try pressing the whistle button
more slowly, taking approximately one
full second to fully depress the button.
You may be pressing the button too
quickly. Try pressing the bell button
more slowly, taking approximately one
full second to fully depress the button.
Reverse the transformer leads.
Check the wiring of the separate
button.
You are waiting too long between
whistle button presses.
Try lubricating the coupler knuckle
with a dry graphite lubricant. Do NOT
use oil.
The coupler needs to be cleaned.
Wipe with denatured alcohol (not
rubbing alcohol) and let dry.
This is normal behavior. To prevent
accidental high-speed start-ups, Proto-
Sound 2.0 is programmed to start up
in neutral anytime track power has
been turned off for several seconds.
See the "Basic Operation" section for
more details.
Troubleshooting Proto-Sound®2.0 Problems
Although Proto-Sound 2.0 has been designed and engineered for ease of use,
you may have some questions during initial operation. The following table
should answer most questions. If your problem cannot be resolved with this
table, contact M.T.H. for assistance (telephone: [phone]; fax:
410-423-0009; e-mail: [email protected], mail: 7020 Columbia
Gateway Drive, Columbia MD 21046-1532).

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Premier U50C Diesel Engine Operating Instructions
Cab Chatter
Lock-out
Volume
Battery
FYS
Remedy
Remedy
Remedy
Remedy
Remedy
Sometimes the Cab Chatter sounds
don’t play.
I can’t get the engine to run after I
power up the transformer. It sits still
with the engine sounds running.
The engine won’t lock into forward,
neutral, or reverse.
The sounds seem distorted, especially
when the whistle or bell is activated.
The engine will not leave the initial
neutral setting.
The FYS sounds occasionally repeat
themselves.
I get no sounds when the engine shifts
between directions.
After I turn off my transformer, my
engine continues to make sounds
before quitting.
Cab Chatter plays only in neutral at
random intervals.
The engine is locked into the neutral
position. Follow the procedure in the
“Lock into a Direction” section.
Engine speed must be below 10 scale
mph (approx. 10 volts or less in
conventional mode).
Proto-Sound 2.0 volume is set too
high. Turn the volume control knob on
the bottom of the chassis counter-
clockwise to reduce the volume.
Check to be sure the battery is
installed and fully charged. See the
“Self-Charging Battery Back-Up”
section.
The battery may be dead or need to
be charged. See the “Self-Charging
Battery Back-Up” section.
Proto-Sound 2.0 is designed to
continue to sound for a few seconds
after power to the track has been shut
off.
Proto-Sound 2.0 has a built-in random
number generator that randomly
selects each sound clip to play.
Because there are a limited number of
sound clips available in each FYS
sequence, it is probable that some of
these sound clips will be repeated
from time to time.

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Premier U50C Diesel Engine Operating Instructions
FYS Remedy
Once in FYS, the engine doesn’t go
into reverse.
When the FYS enters its last
sequence the bell automatically
comes on.
When FYS is enabled, pressing the
whistle and bell buttons has no effect.
I push the direction button but the next
sound clip in the sequence does not
play or the engine does not come out
of FYS after fourth press of the
direction button.
So that FYS effects can be as realistic
as possible, Proto-Sound 2.0
disables the reversing unit
whenever FYS is enabled. This
way the engine remains still at its
stop as the operator cycles
through the FYS sequences.
FYS is programmed to start
ringing the bell at that point. After
approximately 12 rings of the bell,
it will automatically turn off.
Because FYS must control various
effects in each sequence, Proto-
Sound 2.0 takes control of these
sound effects until you exit FYS.
Each FYS clip must play for approx.
30 seconds before FYS will advance
to the next step in the FYS cycle.
Wait at least 30 seconds in each FYS
sound clip before pressing the
direction button.
Compatibility
This engine will operate on any traditional O-72 track system, including
M.T.H.’s RealTrax®or ScaleTrax™or traditional tubular track. It is also
compatible with most standard AC transformers. (See page 20 for a complete
list of compatible transformers and wiring instructions.)

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Premier U50C Diesel Engine Operating Instructions
Transformer Compatibility and Wiring Chart
Proto-Sound 2.0 is designed to work with most standard AC transformers.
The chart below lists the many compatible transformers. Note that many of
the operational commands described in these instructions require a bell button,
so if your transformer does not have its own bell button, you should consider
adding one to get the full benefit of the system. In addition, the chart details
how the terminals on these transformers should be attached to your layout.
Transformer
Model Center Rail Outside Rail Min/Max. Voltage Power Rating Transformer Type
Lionel 1032 U A 5-16v 90-Watt Standard
Lionel 1032M U A 5-16v 90-Watt Standard
Lionel 1033 U A 5-16v 90-Watt Standard
Lionel 1043 U A 5-16v 90-Watt Standard
Lionel 1043M U A 5-16v 90-Watt Standard
Lionel 1044 U A 5-16v 90-Watt Standard
Lionel 1053 U A 8-17v 60-Watt Standard
Lionel 1063 U A 8-17v 60-Watt Standard
All-Trol Left Terminal Right Terminal 0-24v 300-Watt Electronic
Dallee Hostler Left Terminal Right Terminal Electronic
Lionel LW A U 8-18v 75-Watt Standard
Lionel KW A or B U6-20v 190-Watt Standard
Lionel MW Outside Track
Terminal Inside Track Terminal 5-16v 50V.A. Electronic
Lionel RS-1 Red Terminal Black Terminal 0-18v 50V.A. Electronic
Electronic
Lionel RW U A 9-19v 110-Watt Standard
Lionel SW U A Unknown 130-Watt Standard
Lionel TW U A 8-18v 175-Watt Standard
Lionel ZW
Lionel Post-War
Celebration
Series ZW
A,B,C or D
A,B,C or D
U
Common
8-20v
0-20v
275-Watt
135/190 Watt
Standard
MTH Z-500 Red Terminal Black Terminal 0-18v 50-Watt Electronic
MTH Z-750 Red Terminal Black Terminal 0-21v 75-Watt Electronic
MTH Z-4000 Red Terminal Black Terminal 0-22v 390-Watt Electronic
* Conventional Mode Only