Bachmann Williams SD-90 User manual

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Bachmann Industries, Inc.
1400 East Erie Avenue, Philadelphia, PA 19124 USA
www.bachmanntrains.com
Customer Service Telephone [phone]
SD-90 DIESEL LOCOMOTIVE INSTRUCTIONS
Thank you for purchasing a Williams by Bachmann® locomotive. This locomotive has been manufactured to provide
years of use and enjoyment. Please follow the simple instructions below.
This locomotive has been greased and tested before leaving the factory. Before operating, please lightly lubricate the
points shown in the diagram below. Do not over-lubricate and take extra care to avoid getting lubricants on the wheel
surfaces or traction tires.
1. For the axles and coupler pivot points Marked A, we recommend that you lubricate with a small amount of light
oil such as Bachmann E-Z Lube® #99984 Light Gear Oil. Do not over-lubricate.
2. For areas that require electrical flow, such as roller pick-ups Marked B, please use Bachmann E-Z Lube®
#99981 Conductive Contact Lube. Never use any Teflon® based oil on these areas because this type oil has
insulating properties.
3. For the gears Marked C we recommend that you lubricate with a small amount of heavy gear oil such as
Bachmann E-Z Lube® #99983 Heavy Gear Oil. Do not over-lubricate.

– Page 2 of 2 – Printed In China
OPERATION
After unpacking the locomotive, make sure that the uncoupling plunger is in the correct position with the pin inserted in
the knuckle (see figure 1). Failure to do so will allow the uncoupling plunger to contact the center rail and a direct short
will occur when power is applied to the track. We recommend using an AC hobby transformer with maximum voltage
output of 18 VAC and a wattage rating of at least 90 watts.
Throttle Control
The throttle control will allow you to operate your train at a wide range of speeds. Slowly turn the control knob until you
are familiar with the response of the locomotive that you are operating. Please note that our sound systems require 6 volts
or greater to operate correctly.
Horn Operation
To operate the horn of your locomotive, simply depress the horn /whistle button on your transformer. Our True Blast™
Horns will play a 6 second sequence one time.
Bell Operation
To operate the bell on your locomotive, press and hold the bell button for one second. To stop the bell, press and hold the
button for one second.
Direction Control
Williams reverse units sequence FORWARD, NEUTRAL, REVERSE, NEUTRAL, and again FOWARD. To sequence
the reverse board, simply depress and hold the direction button, release the button 1 second after the train has come to a
complete stop. PLEASE NOTE: If you do not wait for your train to come to a complete stop the reverse unit may not
always sequence properly. After approximately 7 seconds without power, the reverse board will reset to FORWARD.
Uncoupling
This locomotive is equipped with operating knuckle couplers at both ends. To uncouple, position the uncoupling plunger
over the center of electro-magnetic track uncoupling section and activate the magnet.
PERIODIC MAINTENANCE
Disassembly Instructions
For periodic maintenance, you will have to remove the body shell and motor trucks to gain access to the parts that require
servicing. The body shell is attached with four screws on the bottom of the locomotive frame. The screws are located in
each corner of the frame. After removing the body shell, unscrew the truck mounting screw shown in figure 1. This will
allow you to disengage the motor from the truck assembly. When servicing is complete re-attach the motor to the truck.
Make sure the worm gear is meshing with the truck gear before tightening the mounting screw completely. You can test
this by rotating the flywheel on top of the motor and the wheels on the truck will turn. Re-attach body shell using care not
to over-tighten the screws.
Lubrication
We recommend that you lubricate as directed on page 1 every 10 hours of operation. In addition, you also should check
the motor gearbox every 25 hours. After gaining access to the gearbox as instructed above, you can inspect the gears and
apply any necessary lubrication. We recommend Bachmann E-Z Lube® #99982 Grease, or equivalent.
Traction Tire Replacement
Our traction tires are very durable and should not need replacing very frequently. They should last hundreds of hours
under normal conditions. If they wear out prematurely, check to make sure your track joints are tight. Gaps in your track
can cause damage to the tires. To replace the traction tires follow the disassembly instructions above. Next remove the
two screws that attach each sideframe. Remove old tire if present, clean wheel groove with any degreasing agent making
sure to follow the safety and handling instructions on the degreasing agent’s bottle. Wipe dry with paper towel or
clean rag. Stretch the new traction tire over the wheel making sure that it does not twist and seats smoothly in the wheel
groove. Re-attach the sideframes and re-assemble as directed above.
Light Bulb Replacement
This locomotive uses a 12 volt bayonet style bulb. The standard replacement bulb number is 53.

Bachmann Industries, Inc.
SD-90 Parts List Rev 06.05.08 Printed in China
,
1400 East Erie Ave, Philadelphia, PA 19124 USA
www.bachmanntrains.com
Customer Service Tele
p
hone 800-356-3910
P
art
N
um
b
e
r
D
escr
i
pt
i
on
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se
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SD-90 BODY & BODY PARTS
804-M001R2 Metal Frame 1
1
-
30080DPT
Screw (Mounts Body to Frame)
4
1
-
30080DPT
Screw
(Mounts
Body
to
Frame)
4
804-01-01 Body Shell 1
322-02-01 Ornamental 5-Chime Horn 1
322-09-01 Headlight lens 2
804-X001, -X002, & -X003 Window Glass 1 se
t
345-03-01 Fuel Tank 2
1-26060DPM Screw (Mounts Fuel Tank to Frame) 4
TR
UC
K PART
S
TRUCK
PARTS
322-E001 Powered Truck Assembly 2
293-M023FR1 Flanged Wheel 4
293-M024FR1 Flanged Wheel w/ groove 4
293-X003 Traction Tire 4
293-M029R5N Axle 4
322-M013R1N Axle for Helical Gear 2
322-08-03 Plastic Trailing Wheel 4
293 M012R5
Hli lG
2
293-M012R5 Helical Gea
r
2
293-M025R3D Wheel Gear 4
322-M007R3D Spur Gear 2
322-M010R7N Spur Gear Pin 2
1-351-40DFM Truck Mounting screw 2
293-E001 Operating Coupler Assembly 2
322-04-01 Pilo
t
2
1-35060DFM Pilot Mountin
g
Screw 2
1 35060DFM
Pilot
Mounting
Screw
2
322-E003 Roller Pickup Assembly 2
322-08-01 Top Insulator for Roller Pickup 2
322-08-02 Bottom Insulator for Roller Pickup 2
322-05-01 Sideframe (Geared Side of Truck) 2
322-05-02 Sideframe (Non-Geared Side of Truck) 2
1-35060DPM Sideframe Mounting Screw 8
MOTOR PARTS
345-E001 Motor Assembly w/ Motor Mount 2
293-10-01BR1
M
otor Mount 2
322-M012R2 Grounding Plate 2
1-26060DPM
M
otor Mount Screw- Large 4
1-30060DPM
M
otor Mount Screw - Small 2
ELECTRONICS
00247 Reverse Board (available from your dealer) 1
00245
True Blast II Diesel Version (available from your dealer)
1
00245
Tr
u
e
Blast
II
-
Diesel
Version
(a
v
ailable
from
y
o
u
r
dealer)
1
See Diagram on opposite side for identification. Parts shown in Italics are not illustrated.
SD-90 Parts List Rev 06.05.08 Printed in China