Page 1
SD70ACe Diesel Engine OPERATOR’S MANUAL Compatibility This locomotive is capable of operating with DC or AC power supplies indoors or outdoors. See page 50 for a complete list of compatible transformers and wiring instructions. MTH does not recommend operating the locomotive in inclement weather and strongly suggests that it not be left out in the elements.
• Snow Plow Set Up Checklist • Install the locomotive couplers • Lubricate the locomotive • Prime the smoke unit • Apply power to run as described in the Basic Operating Section of this manual RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
(be careful not to lose the spring). Next, apply the spring to the position B spacer that is provided, as seen in Position B figure to the right. Spacer RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
7 shorter screws that are provided. The front pilot attaches with 3 screws and the rear pilot attaches with 4 screws. FRONT REAR (4) Mounting Screws (3) Mounting Screws RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
For the rear pilot, the Kadee coupler can be attached to the fixed pilot before it is applied to the chassis. There is no need to remove the truck side. (4) Mounting Screws Figure: Rear Fixed Pilot Assembled Figure: Rear Fixed Pilot Mounted to Chassis RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Remove blind wheel and carefully insert flange wheel in its place. Be sure to keep the flat end of the bearing facing the top. Flange Wheel Flat Edge Must Be Up Reassemble the gear box. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Failure either to add fluid to the unit or to turn it off may damage the smoke unit heating element and/or wicking material. Running the engine without a primed smoke unit may cause damage Smoke Unit Control Figure: Smoke Unit Switch Location RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
A separately supplied snow plow can be snapped onto the leading locomotive pilot. To do this, slide the snow plow over the angled brake hose details and snap the bottom of the snow plow to the pilot. See photo below. Figure: Installed Snow Plow RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Finally, because there are no batteries, you will notice there is no longer an external charge jack on the engine. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
LED's allow for various, correct colors. Also, they require less power and do not emit as much heat as incandescent bulbs. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
By using combinations of button presses, different commands besides blowing the whistle and ringing the bell can be initiated. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 13
The engine is programmed to restart in neutral each time the track voltage is turned off for 25 seconds or more. Cycle Phases Neutral Reverse Forward Neutral RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 14
(if equipped) By default your Marker Lights are set to ON. To toggle the Marker Lights, perform the following sequence on your AC transformer: Place Marker Lights Bell Horn Engine in (On/Off) Neutral RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 15
Once the bell turns off, the operator regains control of the transformer's bell and Horn buttons and can ring the bell or blow the Horn as usual. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 16
Horn 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. Fire Bell Horn Horn Horn Horn Front Coupler RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 17
Direction Lock Place Two Horn Blasts Engine into Horn Bell Bell Bell Horn (indicates change is made) Desired Repeat to Return Direction to Normal Condition RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 18
• Cab Chatter plays at random intervals when the engine idles in neutral. • Engine Start-up and Shut-down sounds play when the engine is initially powered on or is powered off for five seconds or more. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
MTH Web site, www.mthtrains.com With DCS, you can have a whole fleet of MTH PS 3.0 engines on the rails and they will remain shut down until you command them to start up. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
As long as there is DCC power still on the track the engine can be started up again by pressing the F3 button twice. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 21
The bell will shut off automatically. Lights F0 – Headlight/Taillight This toggles your headlight/taillight on and off. F5 – Lights This toggles your firebox and cab interior light on and off. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 22
Again, just like a real engine, you can trigger the Grade Crossing Signal on your engine. This is two long, one short, one long whistle/horn blast. F11 – Grade Crossing Signal Pressing F11 twice (toggling on then off) will sound your Crossing Signal. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 23
F19 will rev the diesel engine to the second notch and so forth. You can rev the engine up 7 notches from idle. This is useful if you wish to simulate a heavy load behind the train and want to rev the diesel engine up. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 24
Pressing the F27 button (enable F27) will disable the Cab Chatter. Pressing the F27 button again (disable F27) will enable Cab Chatter. Cab Chatter is On by default. F28 – Feature Reset Resets Features to defaults. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
3. In the following steps you will need to write values to CV17 and CV18 to tell the engine what the long address should be In order to determine your required values for CV17 and CV18 you will need to go to http://extranet.M.T.H.-railking.com/pdfapp/pdfs/instruction/ HO%20DCC%20addressCV17_18%20Converter.xls RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 27
• Send a decimal 128 to reset only address values back to factory default • This is the same as writing 55 to CV55 to engine address 55 NOTE: The engine address has to be something other than address 55 RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 28
55 on your DCC handheld and sending a value of 55 to CV55. Again, M.T.H. engine’s will listen to the 55-55-55 reset command even though the engine’s address isn’t actually 55 (and it can’t be for the 55-55-55 reset to work). RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
CV115- MTH Function Assignments – See table of supported CV’s and manual section on how CV170 to re-arrange them for further information 1. CV52, bit0 must = 1. This will enable PWM Mode. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 30
Cab Chatter On/Off Low Byte 0-255 Alternate Speed Curve Step 27 Feature Reset High Byte 0-255 Alternate Speed Curve Step 28 Feature Reset Low Byte 0-255 Reverse Trim 0-255 User ID #1 0-255 User ID #2 RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Beacon (Alt Lighting/Country) Extended Shut Down ELECTRIC SMOKE Extended Start Up Electric Boiler Start-Up Start Up/Shut Down Electric Pressure Release Train Wreck Trolley Manual Mode Trolley Random Stops Trolley Learn Mode Trolley Auto Mode RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 32
Function ID table above you can see that Feature Reset is a value of 29 8. Using your DCC system, enter a value of 29 for CV122 and hit Enter. Your engine will give you a two horn blast indication RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
• Setting CV21 and CV22 determine which F Functions the consist responds to See diagram below for example Engine 1 - Front Engine 2 - Middle Engine 3 - Rear Normal Forward Direction of Travel RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 34
10. Ensure F5 and F0 are toggled OFF. You may have to toggle F5 on/off a couple times to get the lights in sync with the DCC command station. This will depend upon your DCC system RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 35
CV21's bits are shown in the table below – the decimal value is shown in parenthesis: (Decimal 7 (128) 6 (64) 5 (32) 4 (16) 3 (8) 2 (4) 1 (2) 0 (1) Value) Function RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 37
128) for the engine you want to reverse. To do this - take 128 (the new bit you want to set) + 5 (the existing bit that you do not want to alter) = 133. You would then write a value of 133 to CV19. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
1. Turn the engine upside down and remove the truck bottom plate mounting screws (shown below). Mounting Screws 2. After removing the truck bottom plate mounting screws, liberally apply grease to the gears attached to both the outside axles (shown below). Grease Points Inside Power Truck RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Figure: Smoke Unit Cap Running the engine without a primed smoke unit may cause damage Smoke Unit Control Figure: Smoke Unit Switch Location RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
The PS 3.0 headlights and other associated lights are small LEDs that require a lot less power and generate a lot less heat than incandescent bulbs, resulting in extremely long life compared to the incandescent bulbs. The LEDs are not user serviceable RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
The coupler does not fire or stay denatured alcohol (not rubbing alcohol) and coupled. let dry. Cab Chatter Solution Sometimes the Cab Chatter sounds Cab Chatter plays only in neutral at random don't play. intervals. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 43
PFA cycle. Wait at least 30 play or the engine does not come out of seconds in each PFA sound clip before PFA after fourth press of the direction pressing the direction button. button. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 44
DCC set the smoke back to High. It'll remember what you last set it as when you run it again in Conventional DC Check for an obstruction in the smoke stack Add 10-12 drops of smoke fluid RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 45
New engines even after they are lubricated may take a little bit to get everything run in. Be a little patient and let it run for a bit. It should clear up shortly after lubricating and running. RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 46
F Function that exists on your controller Check for an obstruction in the smoke stack Add 10-12 drops of smoke fluid RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 47
Try to get a hold of the engine on its last known long address Place the engine on the Programming Track output on your DCC system and write a value of 3 to CV1 RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 48
This is normal. You will need to press the Doppler shift but then the engine sounds Doppler button again to turn Doppler off. Your fade out and I can't get them back engine sounds will now return to normal RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Page 49
Delete the engine from your DCS remote, I believe it to be set at and attempt to re-add it. On the DCS Remote, hit Menu > System > Engine Setup > Recover Engine RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
110-Watt Standard Lionel SW Unknown 130-Watt Standard Lionel TW 8-18v 175-Watt Standard Lionel ZW A,B,C or D 8-20v 275-Watt Standard Lionel Post-War A,B,C or D Common 0-20v 135/190 Watt Electronic Celebration Series ZW RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Controller PWM Output from this power supply Will DAMAGE the TIU * Use 22 volts maximum track voltage when operating a MTH locomotive equipped with Proto-Sound, Loco-Sound, Proto-Sound 2.0 or Proto-Sound 3.0 RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
• Direction Control Set-Up: User can set initial individual start-up direction (start in forward or reverse) for double-heading operations • Locomotive Consist Set-up: User can determine locomotive values for consist make-ups, allowing multiple locomotives belonging to a consist to operate together RailKing One-Gauge SD70ACe Diesel Engine w/Proto-Sound® 3.0...
Service & Warranty Information How to Get Service Under the Terms of the Limited One-Year Warranty When you suspect an item is defective, please check the operator's manual for standard operation and trouble- shooting techniques that may correct the problem. Additional information may be found on the M.T.H. Website. Should you still require service, follow the instructions below to obtain warranty service.
Need help?
Do you have a question about the SD70ACe and is the answer not in the manual?
Questions and answers