Kato EMD GP35 Phase 1A / 1B / 1C

Scale:
HO Scale


This installation uses the following decoder:

A4X



This installation documentation is for the HO-scale EMD GP35 Phase 1 and uses the A4X Decoder. This installation was performed by A.G.





Pictures of Kato EMD GP35 Phase 1C w/ Dynamic Brakes with its shell on.
Pictures of Kato EMD GP35 Phase 1C w/ Dynamic Brakes with its shell on.


Grasping the shell at the center top of both sides (being careful not to crush the grills), lift the shell straight up and off of the chassis.
Grasping the shell at the center top of both sides (being careful not to crush the grills), lift the shell straight up and off of the chassis.


The motor and track power wires can be removed from the original light board at this time.
The motor and track power wires can be removed from the original light board at this time.


Remove the original light board and install the A4X in its place. The connections from the original light board will line up with the contacts on the A4X. A new LED was wired and put in place of the original.
Remove the original light board and install the A4X in its place. The connections from the original light board will line up with the contacts on the A4X. A new LED was wired and put in place of the original.



Important Soldering Tip

Please do not use any flux either liquid or paste on the mother board. Over time, the acidic properties of liquid or paste flux will begin eating away at the fiberglass PCB and will damage it. Use only Rosin-core solder or no-clean flux approved for electronics use.

TCS recommends the use of Kester "44" Sn63 Pb37, .015" diameter Rosin-core solder. Kester part number 24-6337-0007.

You can order this solder from the following retailers:
Digikey - PN:KE1110-ND
Techni-Tool - PN:488SO6775

Other solder tips

When stripping wire, only strip a tiny little bit of the insulation. Strip no more then a 1/64 of an inch. When the wire gets tinned with solder, the insulation will shrink back more. Try to not expose any more wire then half the length of the solder pad at most. In no case should solder or exposed wire wire ever be outside the boundary of the the solder pad you are attaching a wire to.
Click here for important information on properly Stripping and Tinning wire