M.T.H. RailKing RKS SD70ACE Quick start guide

M.T.H. HO

SD70ACe/SD70M-2

Diesel Engine

Congratulations! You've just purchased the most

technically advanced HO diesel locomotive ever

produced! This highly detailed model includes a

broader range of features than you’ll find on any

other HO scale diesel, including operating

flashing ditch lights; smooth performance from a

12-Volt 5-Pole Precision Flywheel Equipped

Skew-wound motor; and a DCC-Ready plug-in

receptacle for any DCC receiver. If you’re

looking for modern motive power that’s

accurately detailed, smooth running, and a great

deal of fun to operate, it doesn’t get any better

than this.

PLEASE READ THE MANUAL BEFORE USE AND SAVE

WWW.MTHHOTRAINS.COM

DCC Ready

ENGINEER’S GUIDE

TABLE OF CONTENTS

UNPACKING YOUR ENGINE 4

Removing and Unwrapping Your Engine 4

What Else is in the Box? 4

PRODUCT OVERVIEW 5

Getting to Know Your Engine 5

Engine Diagram 6

Removing the Body 6

SET-UP 9

Lubrication 9

FEATURES AND OPERATION 9

Analog DC (standard DC power pack) 10

DCC Digital Command Control 10

Installing your DCC Decoder 12

SPECIFICATIONS 14

CARE AND MAINTENANCE 15

Troubleshooting Guide 15

HOW TO ORDER PARTS 16

SERVICE & WARRANTY INFORMATION 18

Alternate Lighting Supply Jumper 11

Service & Warranty Information 18

Limited One-Year Warranty 18

This product may be protected by one or more of the following patents: 6,019,289;

6,280,278; 6,281,606; 6,291,263; 6,457,681; 6,491,263; 6,604,641; 6,619,594; 6,624,537;

6,655,640.

CAUTION: ELECTRICALLY OPERATED PRODUCT:

WARNING: When using electrical products, basic safety precautions should be observed, including the following:

Read this manual thoroughly before using this device.

lM.T.H. recommends that all users and persons supervising use examine the hobby transformer and other electronic equipment

periodically for conditions that may result in the risk of fire, electric shock, or injury to persons, such as damage to the primary cord,

plug blades, housing, output jacks or other parts. In the event such conditions exist, the train set should not be used until properly

repaired.

lDo not operate your layout unattended. Obstructed accessories or stalled trains may overheat, resulting in damage to your layout.

lThis train set is intended for indoor use. Do not use if water is present. Serious injury or fatality may result.

lDo not operate the hobby transformer with damaged cord, plug, switches, buttons or case.

Recommended for Ages 14 and up. Not recommended for children under 14 years of age without adult supervision. As

with all electric products, precautions should be observed during handling and use to prevent electric shock.

M.T.H. HO SD70ACe & SD70M-2 Diesel Engine

QUICK START GUIDE

I USE A REGULAR DC SUPPLY…

Step 1: Unpack your Engine (refer to unpacking instruction on pg 4)…

Step 2: Set the engine on the track …

Step 3: Apply increasing DC voltage until she starts up and pulls out!

CAUTION: M.T.H. HO engines DO NOT OPERATE ON AC

VOLTAGE. Applying AC power to your locomotive could cause permanent

damage and will void your warranty.

Of course, you should read your manual over before running your engine,

but if you just can’t wait you’re in luck. Your MTH DCC Ready engine is

ready to run out of the box. Follow the three simple steps below to get

your new engine up and running. Now, after a few minutes, shut her down

and read through your engineer’s guide.

UNPACKING YOUR ENGINE

Removing and Unwrapping Your Engine

Carefully remove and unwrap the model on a soft surface. By nature, models

with high levels of detail have some small fragile parts.

Carefully remove any foam packing pieces that may be surrounding the model.

What Else is in the Box?

The following items are packed with your engine.

Engineer's Guide (1)

You probably know that since you're reading it.

ALT-L Pad Jumper (1)

This is for the ALT-L pad on the MTH DCC Ready Engine Board

M.T.H. HO SD70ACe & SD70M-2 Diesel Engine

PRODUCT OVERVIEW

Getting to Know Your M.T.H. HO Locomotive

Key Features

Your new HO Diesel Engine is equipped with a DCC-Ready receiver receptacle.

In plain English, this means your locomotive is ready-to-run using any DC power

supply and can be quickly updated to command control with any DCC decoder.

Compatibility

This HO model has directionally controlled LED's, has locations for DCC

decoders to drive the Number boards and Ditch Left and Ditch Right LED's

(extra F functions on applicable DCC decoders).

Compatible with any DC power supply

Compatible with DCC decoders that use the standard 8-pin NMRA connection

M.T.H. HO SD70ACe & SD70M-2 Diesel Engine

Lights

As you read on, you'll notice there are no instructions for replacing light bulbs in

your diesel. That's because there aren't any. We use specially designed and

controlled LEDs to create realistic lighting effects that occur automatically. All

the lights for this model are LED’S (headlight, two number boards, two ditch

lights and a tailight) Again, NO PROGRAMMING!!

More…

No other HO locomotive has features like these. There are so many more things

to learn and enjoy about M.T.H. HO Engines, we could write a book. But, that's

no fun. So, if you haven't already done so, flip to the Quick Start Guide and let's

run your new engine!!

ENGINE DIAGRAM

Locomotive

M.T.H. HO SD70ACe & SD70M-2 Diesel Engine

GPS Receiver

Metal See-Through Fan Vents

Detailed Horn

Magnetic Kadee®

Compatible Couplers

Detachable Snow Plow

Crew Figures

Die-Cast Air Tanks and Fuel Tank

Warning Placards

Safety Tread on End Steps

All wheels Powered

Removing the Body

Follow the below steps to remove the body and access the DCC ready control

tabs. You will need to remove 4

First remove the two in the front of the engine.

handrails.

handrails Use tweezers or

needle-nose pliers to carefully pull the handrail from the body. To prevent

damaging the paint wrap the pliers or tweezer tips in masking tape.

Remove

Handrail

Remove

Handrail

M.T.H. HO SD70ACe & SD70M-2 Diesel Engine

To access the front and rear body tabs you must first remove the

truck bottom plate and wheel sets. To do this:

1. Remove the truck bottom plate using a thin-bladed screwdriver. Once removed

note the orientation of the bottom plate. It only goes back on one way. The end

that has the angle cut into it goes towards the fuel tank

2. Using tweezers or needle-nose pliers, gently pull both truck sides outward to

release them from the wheels. NOTE - The pick-up wires are attached to the truck sides

so take care not to pull them out too far or the pick-up wires could be damaged

3. Lift all three wheel sets up. Note the gear location on each wheel set so they

can be re-installed correctly

Then remove the handrails on the left and right side front of the engine. You can

either remove the stanchions from the body or pop the handrail off the

stanchions. Use tweezers or needle-nose pliers to carefully perform this. To

prevent damaging the paint wrap the pliers or tweezer tips in masking tape. Take

care not to deform the handrail or break the handrail stanchions.

M.T.H. HO SD70ACe & SD70M-2 Diesel Engine

4. Using a small-bladed screwdriver gently push the tabs outward to release them

from the chassis

5. Now that you have the body tabs released gently lift the body away from the

chassis

6. Re-install the wheels sets into the front and rear trucks ensuring the gears mesh

7. push the truck side back over the wheels axles making sure each axle is in their

respective bearing

8. Snap the truck bottom plate back into place. NOTE - The truck side MUST BE

seated all the way towards the center of the truck because the truck bottom plate holds the truck

sides in place

9. Check that your truck sides are parallel to one another and that each wheel set

axle is seated in the bearing in the truck side. If one of the truck sides isn't

parallel then remove the truck bottom plate and ensure the truck side is pushed all

the way towards center and re-install the truck bottom plate. Again, the truck

bottom plate's angled end goes towards the fuel tank.

To re-install the body:

1. Slide the body over the chassis taking care not to catch it on the handrails you

removed earlier

2. Press down evenly on the front and rear of the top of the body to engage the

clips onto the chassis

3. If you have the body clipped to the chassis correctly you should be able to pick

the model up by the body

4. Re-install the handrails you removed earlier

Tab

M.T.H. HO SD70ACe & SD70M-2 Diesel Engine

Lubrication

Using light machine or household oil, apply a very small amount to all axles

points as shown.

Your gearbox is properly greased at the factory and probably never needs service

however, if you run excessive hours pulling heavy loads, it's a good idea to

remove the 2 screws from the gearbox cover and re-grease using M.T.H. gear

grease or equivalent.

Lubricate Axles (L)

SET-UP

Lubricate Axles (L)

FEATURES AND OPERATION

Now, for the fun stuff! Your new M.T.H. HO Diesel Engine has more features

and operating capabilities than any HO engine ever built by any manufacturer.

We're going to walk you through everything she does in general but, you'll

probably find a few we forgot to mention on your own.

Don’t worry. We’ve taken care of the hard part for you. Your MTH DCC Ready

engine already has the jumpers installed at the factory so all you have to do is set

it on the rails, apply DC power and away you go.

Conventional Operation Jumpers

Your MTH DCC Ready engine has pre-installed jumpers that allow for out-of-

the-box operation. However, you can remove these jumpers to change the

lighting to your liking. You can shut off the Ditch Lights or the Number Board

Lights by removing the jumpers on the engine's circuit board. Please refer to

Removing Jumpers in the DCC Operation section of this manual.

It is important to note that there two sets of jumpers that route track power to

your engine's motor. These must be installed when operating in Conventional DC

mode.

Couplers

MTH DCC Ready engine comes with Kadee-compatible couplers already

installed.

M.T.H. HO SD70ACe & SD70M-2 Diesel Engine

FEATURES AND OPERATION

Modes of Operation

Analog DC

This is when there is nothing connected to the rails except a conventional DC

power pack. These power packs generally have at least one variable output

controlled by a throttle of some sort and a means of reversing DC polarity on

the track to change the direction of your engine.

DCC

The user connects their DCC decoder of choice to the MTH DCC Ready

board's 8-pin header following the DCC decoder's manufacturer's instructions.

Analog DC

Not much explanation is required here, and that's exactly why you run your trains

this way! Here's the good news, even if you like to keep it simple, your MTH HO

engine is outfitted with lights, features, that you're going to love.

Running the Engine

Set the engine on the rails, and apply DC power. Refer to the Set-Up section of

this guide for instructions on how to lubricate the chassis.

As you increase power, at about 3 volts, the lights will come on and she'll move

out!

Changing Direction

Lighting

Continue increasing the voltage all the way to 16 volts DC for maximum

speed.

Reduce the throttle until the engine stops, flip the direction switch, and then

increase the throttle again.

Your model is equipped with a headlight, operating ditch lights, and number

board lights. In analog DC mode, lighting operation is fully automatic.

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