5
2.
Using the 20thou wire provided solder or glue it into position on the long hood, on the centre line and just forward of the
radiator exhaust vents, with it protruding 1.0 – 1.25 above the mansard long hood roof
3.
Glue or solder 8 lift rings (P10) into the holes provided in the long hood and the nose roof sections
4.
Glue the headlights (P11) into the depressions on each of the noses
5.
Glue or solder the step treads (P12) onto the holes provided in each staircase and trim the tabs protruding through the
rear
6.
Depending on your era cab valances (P13) are glued at each of the corners of the cab where it meets the walkway
7.
Depending on your era you may need to fill the depressions in the cab sides representing the staff exchanger holes
8.
Horn (P18) should be trimmed to one forward and one aft-facing unit from the 3-trumpet part supplied. Use the smallest
2 units from the set
9.
Glue (P24) two small 1.5mm thick wooden blocks in front of each cab door to the walkway
Walkway handrails:
1.
Solder the short nose cab front handrails (P14) (6 x 6 mm) to the walkway and cab. There will be a small section left
hanging below the walkway. Trim the excess handrail below the walkway
2.
Solder the rear cab handrails (P15) (4 x 6 mm) to the cab and walkway. Make sure they look square and correct
3.
Solder the short nose long handrails (P16) (4 x 10 mm) to the walkway paying attention to the orientation of the units
relative to the body as per the prototype. You will find it easier if you solder the nose first and then proceed to solder the
longer arm to the staircase. Note this will necessitate the handrail to be slightly bent to achieve this. See photos of the
model and prototype
4.
Solder the “U” shaped handrail (P17) to the walkway and then solder the longer leg to the lower step. Twist handrail to
shape after securing. Repeat for the other side
5.
‘Pre Tin’ the headstock face with solder where the rear large handrail (P18) will attach. ‘Pre tin’ the back of the handrail
where it will attach to the headstock. Clean any lumps from the faces of both units and sweat the handrail into position
6.
Glue the 2 plywood steps (P19) outside the door etch at both front and back of the cab against the walkway
My original prototype shows brass/copper exhaust area but is now a 3D part. Note the cab roof is not yet glued on
Fuel Tanks:
1.
Glue (P20) into the notch of (P21) Fuel tank/Battery box and repeat for the other side
2.
Glue (P22) battery box bottom across between the 2 battery boxes to fill in the space. When dry radius a small amount
with a file on the bottom to form the fuel tank and battery box curve that is a feature of the real unit. Set this aside and
alter slightly depending on which chassis you choose for your loco
Bachmann S4 disassembly and modifications:
Hint: Use a camera or phone to take photos of the disassembly procedure if you don’t feel confident of where all the parts come
from.
3.
Remove body by inserting a small screwdriver between the chassis and the side sill and then gently pry the shell upwards.
Once it is raised from the base of the chassis, the shell should pull off readily. There are 4 dimples that grab the inside of
the body. Located 21mm on either side of the long hood and 21mm back from the front of the cab. Insert your
screwdrivers around these areas to free the body
4.
Remove the screws securing the two weights above the bogies
5.
Remove 2 screws securing the DCC board
6.
Unsolder the four wires that are attached to the bogies at the DCC board end. With the tip of a small screwdriver, scratch a
line on one bogie underside face and on the walkway face where it is housed. This will aid the correct bogie going back in
its correct spot although it shouldn’t matter we know this configuration was done at the factory worked well
7.
Remove the bogie worm drive covers by gently prizing them off at the long end near the face of the weight towers. Take
your time as this is fiddly
8.
Using the photo below as a guide file/grind the Fluro green area with the weight that has two screw holes to the width of
the running board of the chassis
(P17)
(P18)
(P15)
(P14)
(P16)
