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INSTRUCTIONAL MANUAL

UNION PACIFIC 4-8-8-4 BIG BOY, ELECTRIC

INSTRUCTIONAL MANUAL

UNION PACIFIC 4-8-8-4 BIG BOY, ELECTRIC

Caution!
This model is an accurate replica of the original locomotive.   It has sharp 

and moving parts.   The locomotive drive rods are stainless steel with sharp 

edges.
OPERATORS MUST NOT COME IN CONTACT WITH A MODEL THAT IS BEING 

POWERED AT ANY TIME.   UNDER NO CIRCUMSTANCES 

 

SHALL 

 

 ACCUCRAFT 

TRAINS  BE  RESPONSIBLE  FOR  ANY  INCIDENTAL  OR  CONSEQUENTIAL 

DAMAGES ARISING IN REGARDS TO ANY ACUCRACT PRODUCT.

4

7

Lubrication

:

Please  lubricate  your Accucraft  Model 

before attempting to operate.

With a bit of care, your Accucraft Model 

should give you many years of pleasure 

and reliable service.   Lubrication is of 

prime importance on a model of this type 

with so many moving parts.  Always use 

quality lubricants.   This should not be 

a problem, for there are many modern 

lubricants available in hobby and sport 

shops.   Light oil such as

 Labelle #108

 

or  Hoppe’s  Gun  Oil  will

 do a good job

on lubricating most of the

 moving parts.

For pistons and slides, a 

heavier lubri-

cant such as Labelle #102

 would

suffice.   

F

or  gears,  use  gear 

grease such as Permatex Super Lube 

or another hobby gear lubricant.

To  access  the  many  moving  parts  of 

this model:  using a soft towel or foam 

sheet,  the  model  should  be  carefully 

placed on its side.   A drop of light oil 

on  every  moving  part  is  necessary: 

there  are  many  moving  parts  on  this 

locomotive.      Be  sure  to  lubricate  all 

the crank pins, crosshead slides, piston 

rods, etc., that are visible to you.  Make 

sure  you  lubricate  the  locomotive  and 

tender axle’s journals as well.

Do

 

not over lubricate, since excess oil 

only picks up unwanted dirt.   Be careful 

to  keep  lubrication  off  the  painted 

surfaces to avoid having shiny 

areas.

Unpacking your Big Boy:

Please read the following directions 

before unpacking your locomotive.

Accucraft  Trains  locomotives 

are fine scale brass models with 

small parts.  To provide maximum 

protection from shipping damage; 

we carefully pack the models in 

metal  cases.    We  ship  via  UPS 

with  insurance  coverage  to  its 

full  value.    Please  contact  UPS 

if  package  is  damaged.  Each 

locomotive  is  packed  under 

UPS guideline for shipping.  We 

do  not  warrant  any  damage 

resulted  from  re-packaging  by 

any  party  other  than  Accucraft 

Trains.  Please read the following 

directions before unpacking your 

locomotive.

1. 

Remove foam around the 

locomotive.  Slide  the  inner  box 

cover to the side, and open the 

inside cardboard box by carefully 

cutting  the  tape  with  a  cutting 

knife.
2. 

Lift  the  metal  case  from 

the cardboard box.

Summary of Contents for UNION PACIFIC 4-8-8-4 BIG BOY

Page 1: ...UNION PACIFIC 4 8 8 4 BIG BOY ELECTRIC INSTRUCTION MANUAL 33268 Cental Avenue Union City CA 94587 Tel 510 324 3399 Fax 510 327 3366 www accucraft com Copyright 2006 ...

Page 2: ...f the Big Boy Not only were these locomotives the largest ever built but they were highly successful and reliable The Big Boy moved monumental amounts of freight during their short 18 year working career and helped win World War 2 The entire first group of Big Boys ran over 1 million miles and the last group ran over 800 000 miles In many peoples minds no other steam locomotive in history exemplifie...

Page 3: ...Wiring Diagram at the rear of this manual The lights on this locomotive are LEDs rated at 6 volts Your locomotive and tender are electrically connected via a 12 prong plug at the rear of the locomotive under the rear deck This plug takes the place of the usual wireless drawbar that has traditionally been found on metal locomotive models The drawbar on this model is just what the name implies a dra...

Page 4: ...nches 851 mm Width 4 25 inches 108 mm Height 6 3 inches 160 mm Tender Information Length 17 inches 432 mm Width 4 05 inches 103 mm Height 6 37 inches 162 mm Recommended Radius 3M 10ft Power Two Pittman GM94 13 2 0 24V DC 11 5 1 Gear Ratio Peak rated output torque 187 oz in Output Shaft stall torque 911 oz in Be sure to leave at least a 3 clearance measured from the inner rail to allow for overhang...

Page 5: ...bby gear lubricant To access the many moving parts of this model using a soft towel or foam sheet the model should be carefully placed on its side A drop of light oil on every moving part is necessary there are many moving parts on this locomotive Be sure to lubricate all the crank pins crosshead slides piston rods etc that are visible to you Make sure you lubricate the locomotive and tender axle ...

Page 6: ... clean the electrical pickup units when needed Replacement electrical pickup units can be ordered from Accucraft Trains Lighting This model features directional lighting Sound installation if not factory installed Several manufactures have sound systems that are acceptable for your new Big Boy locomotive Sound system power connectors are available for the power distribution board in the tender and...

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