Kohs & Company Allegheny Troubleshooting guide
The Kohs & Company 'Allegheny' class locomotive is an exact scale replica of the original pro-
totype. It is constructed of formed and fabricated brass and incorporates many scale operating
features. Although the model is very sturdily built, the boiler, tender shell and particularly the
detailing are very susceptible to damage by rough or careless handling. To prevent damage,
please exercise great care in unpacking and handling the model. The locomotive is best handled
by lifting under the rear engine cylinders due to the articulated front engine. When touching
This locomotive model is designed to operate on Direct Current (DC) electricity. Any applica-
tion of Alternating Current (AC) WILL DESTROY THE INTERNAL ELECTRONIC COM-
PONENTS OF THIS MODEL. Kohs & Company will not be responsible for damage caused
recommendations under the heading of 'Power Supply Requirements', please make note of the
information offered.
Before unpacking, handling or operating your new model PLEASE TAKE THE TIME TO
FULLY READ THIS MANUAL. This is a small investment in time to protect your substantial
©2007 Kohs & Company, Inc - Clarkston, Michigan 48348
OPERATION AND MAINTENANCE INSTRUCTIONS
'Allegheny' Class Locomotive
PREPARING THE LOCOMOTIVE FOR OPERATION
Although your 'Allegheny' is ready to operate, a couple preventive maintenance precautions
should be observed to ensure the smooth operation and longevity of the model. First of all, make
certain that all of the small fasteners used to assemble the running gear are snug and have
not come loose during shipping. Secondly, the locomotive has been lightly lubricated during
dealer should be able to guide you in the selection of a suitable lubricant. Care must be taken
of the locomotive. This situation can be corrected by carefully removing the lubricant using a
cotton swab and alcohol.
LOCOMOTIVE AND TENDER CONNECTIONS
The locomotive and tender have two pairs of connectors that must be joined together to allow
for the complete operation of all the model's features. The connections are made by matching
housings (it is not possible to incorrectly make these connections). With the connection made,
the excess wire may be carefully pushed into the locomotive and tender. When disconnecting
the locomotive from the tender, pull only on the housings - Do Not Pull On The Wires! It is
advised that the wire connections be made with the locomotive and tender in place on the track,
do not attempt to move the pair while connected together.
The stoker feed tube should be positioned inside the stoker feed-ramp receptacle under the cab
when joining the locomotive and tender. The feed-ramp will swivel from side to side during
operation to prevent binding. The rear cab deck apron should rest on the front edge of the
tender deck when you are ready to operate. The drawbar on the locomotive should be lined up
with the drawbar 'pocket' on the tender and the two units simply pushed together, the drawbar
will automatically lock in place when you hear the audible click of the drawbar pin locking.
To disconnect, pull on the ring hanging from the drawbar locking pin directly under where the
drawbar enters into the tender, a pair of tweezers will be required for this operation.
have patience to properly connect the loco and tender, there are many small detail items that
may be otherwise damaged.
The Kohs & Company 'Allegheny' is a Direct Current (DC) electric scale locomotive. Do not
attempt to use AC power as damage will occur. The following criteria should be used
when selecting your power supply:
1) Filtered DC (direct current) output.
2) 0-18 volts (DC).
3) Minimum available current should be approximately 2.0 amps, 8-10 is best.
Should you choose to use a less expensive power supply or one which does not meet the above
criteria, undesirable operating characteristics may result as well as possible damage to the
electronics used in the model. If you have questions regarding your selection, do not hesitate
to contact us for advise.
The locomotive and tender contain a state-of-the-art sound/control/lighting system which digi-
tally recreates actual locomotive sounds, provides automatic and manual control of all lighting
functions and affords you automatic as well as manual control of the reverse-gear mechanism
all using standard DC track power. While this system requires track voltage to actuate certain
sounds and directional features, the actual power used to operate the system is supplied by
standard '9V' batteries that are placed in the tender coal bunker during the operation of the
locomotive. There is a wiring harness packed in the box along with the locomotive and tender.
At the end of the wiring harness is a male plug which needs to be inserted into the receptacle
located in the coal bunker of the tender, with this connection made, the coal load can be placed
over the batteries to conceal their installation. When you unplug the batteries, do not pull on
the wires, only the plug shell.
Note: If the ON/OFF switch located under the tender cistern hatch is left in the on position
with the batteries installed, they will be drained whether the tender is connected to the locomo-
tive or not. If the locomotive will not be operated for an extended period or will be in storage,
it is highly recommended that the batteries be removed from the model.
To access the manual functions of the system, the supplied system controller needs to be wired
in-line between your power supply and the track. There are four (4) screw terminals on the
bottom of the control box which are labeled 'To Track' and 'From Trans', these should be self-
explanatory, there are also 'A' and 'U' designations to allow you to align your polarity. There is
an included 9V wall transformer to supply power for the control box, you will see the receptacle
on the control box near where the wires for the transformer and track are connected.
OPERATING THE LOCOMOTIVE
The tender was shipped to you with a scale 'E' type coupler installed for display and opera-
tion. A Kadee unit may be substituted for the scale unit, the holes are pre drilled and tapped
for the installation. It is recommended that you operate the locomotive at a varying speeds
and in both directions during the break-in period, the break-in period should last for a total of
approximately 60 minutes (this may be accomplished on an incremental basis). This will help
the drive system to 'run-in' resulting in smoother running characteristics.
the sound system switch under the water tank hatch. Shortly after turning the system on you
will hear the blowers activate. With the locomotive stationary you will hear, in addition to the
blowers, the air compressors and pressure relief valves on an intermittent basis. The whistle
and/or bell may be sounded at any time, when the system is turned on simply by touching the
appropriate control button once to turn it on and again to turn it off.
When 'track' power is applied to the locomotive and as soon as the drivers begin to turn, the
engine. In normal operation all lighting and reverse-gear functions will happen automatically,
if you choose to issue a manual command, you will need to continue manual commands unless
you issue a 'Auto Reset' command, all command and button combinations are listed below.
HEADLIGHT - Headlight on/off HEADLIGHT / ALT - Backup Light on/off
MARKER - Marker Lights on/off AUX 1 - Cab Lights on/off
FORWARD - Reverse-gear Forward FORWARD / ALT - Cylinder Blowout on/off
REVERSE - Reverse-gear in Reverse REVERSE / ALT - Main Sounds on/off
BELL / ALT - Restore Auto Direction AUX 2 (AUX 1/ALT) - Tender Work Lights
The sound portion of the system uses three speakers (two in loco and one in tender) and three
treble controls that are accessible through the tender cistern hatch and the arrangement of the
controls is pictured on the Sound/Control System insert page included with these instructions.
Using high extremes on these controls is not recommended as severe distortion will result in
the sound
LOCOMOTIVE CARE AND MAINTENANCE
Routine maintenance consists of periodic lubrication as described under the heading 'Prepar-
ing For Operation' and replacement of the sound system batteries covered under the heading
'Sound System'. It is advisable to periodically check the tightness of the small fasteners used
to assemble the side rods and other detailing to make certain that parts will not be lost. If
the model will not be operated for an extended period of time, remove the batteries from the
locomotive and sound controller.
SERVICE
The Kohs & Company 'Allegheny' comes with a limited lifetime warranty to the original owner.
We will repair any model requiring service as a result of normal use, but not abuse. All of
our guidelines for operation must be followed otherwise the warranty is voided. We will not
replace consumable items such as light bulbs and batteries as a matter of course, but will make
such items available to customers on a cost basis. If you have technical questions or questions
regarding service, please contact us directly:
Revision: 10/1/2007
The photograph to the left shows the drawbar
release hanging down under the operational
buffer assembly. The prototypical double
drawbar inserts into the two slots just above
the release.
The Photograph to the right shows the
battery wiring harness for the sound
system batteries. The connection is
color-coded for polarity, so pay close
attention when plugging the harness
into the coal bunker.
The photograph to the left shows the sound/
control system on/off switch under the cistern
hatch. The sound controls are accessed under
the hatch to the right of the switch.
The image to the right illustrates the
arrangement of the sound controls
as though looking through the cis-
tern hatch facing to the front of the
locomotive. The controls should be
adjusted using a small plastic screw-
driver to prevent shorting the circuit
board should you touch it during the
adjustment.
Shown above is the completed connection of the locomotive and tender, notice the position of the
electrical connectors.
Pictured above is the sound system control box, in the left view the terminals and markings are vis-
ible, in the right view notice the 9V wall adapter transformer and connection location.
There are two subjects that were not dealt with in the main body of the instructions, but
should be mentioned. The sound/control system is compatible with the current DCC tech-
nology and there are connectors on the internal circuit boards to interface with DCC decod-
ers. For more specic information on this connection process, please get in touch with
us directly. Additionally, while our Y6a is delivered ready to use normal alkaline ‘AA’
batteries, the system does have a charger circuit built in to allow the use of rechargeable
nickel-cadmium ‘AA” batteries. A plastic shelled jumper that must be installed on the main
circuit board is included with the wiring harness packed with the model. If you would like
to employ nickel-cadmium batteries, get in touch for the detailed process.
IMPORTANT SETUP INSTRUCTIONS
Your new Kohs & Company ‘Allegheny’ model is equipped with prototypical functioning
rocker assemblies on the trailing truck, as a result the model requires proper preparation
prior to operation. The photos below illustrate the proper setup of the rockers, you will ex-
perience derailments particularly on minimum radius curves if they are not properly aligned
when the locomotive is placed in service.
The photo to the left illustrates the
correct setup for the rocker units,
notice that the rocker head is centered
over the base unit, this will allow free
movement in either direction.
The photo to the right illustrates
the incorrect setup of the rock-
ers, notice that the rocker head
is offset to one side relative to
the base unit. This arrangement
will not allow free movement
and will result in binding the
swing of the trailing truck during
operation
UNPACKING INSTRUCTIONS
Open the shipping carton and carefully remove the foam inserts
from around the locomotive and tender. The loco and tender should
be removed from the case by placing your hands under the wooden
shipping board which each piece is wrapped on. With the two units
of the model removed from the box, look for the overlap in the plastic
wrapping and carefully unwrap it from both units. With the plastic
removed, undo the tape that secures the inner wrapping, this will
expose the model. Use great care in opening the tissue that surrounds
the model as it tends to snag on small detailing when it is pulled
open. When lifting the model from the shipping board be careful not
to press in on any of the side rods, this will create misalignments
during operation. (NOTE: All packing material should be saved for
future reference)
Table of contents
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