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Previously posted in MTH General Topics... maybe that was the wrong place...

I have an MTH  SD-45 that was my first PS2.0 locomotive that recently stopped working (30-2194-1).   A local repair tech took a look and determined that one of the boards had failed.  My only option was a PS 3.0 upgrade, but that cost more than I wanted to spend on this engine.  So, at my request, he removed the technology and motors so I could run it as a dummy.

Fast forward to now, and I want to put some LEDs (from Evan Designs) in the headlights, but when I started investigating, I found that the tech also removed the pickup rollers.  Having searched the forum, I found quite a few threads about pickup rollers for Lionel rolling stock.  I had one from an old broken caboose, but it wouldn't fit this engine.

So, any suggestions on where/how I install one or two pickup rollers on this locomotive so I can add the lights?

Thanks in advance, as always!

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@Brad Trout posted:

Thanks, gentlemen.  I found one on ebay for $5. I don't often buy from there, but in this case I made an exception.

What did you buy?  If this is like most early diesels that I have seen you will need to remove the trucks to install them. You will need rollers, insulating pockets and mounts, and mounting screws.  I can look in my storage unit junk box for a set of rollers and hardware off of a parts engine that is not worth repairing .

@ssm - the trek is just far enough that I don't really want to drive there for them!

@DMASSO - thanks for the idea!

@Forest - I don't hold the tech at fault here; he agreed to do the diagnosis and gutting of this engine and diagnosis of another in exchange for the motors from this one.  I just didn't think ahead at that time that I might want the rollers later.

@dkdkrd - that's funny!!!

@Choo Choo Charlie - I agree-- except for the shipping/handling which always seems to be the kicker.  As an amazon prime member, I usually pay no shipping for many items I buy there.

@gunrunnerjohn - after you got me thinking, I did some digging in my parts box and low and behold, found a couple of these.  So between those and the one on it's way, I have at least 2 to install.

@RonH and @Forest - Thanks for the kind offers.  I think I have screws and related parts in my junk box along with the rollers I found from some distant past I don't quite remember.  But, hopefully it's OK if I reserve the right to revisit this with you if/when all the parts arrive and I tackle the job. 

Last edited by Brad Trout
@Brad Trout posted:

I'll have to pull up a parts diagram somewhere to see what all these various parts are.  I didn't know rollers had subassemblies.    Thanks for the heads up!

I tried that. No parts diagram on MTH's sight for this engine.

The sub-assemblies are the top and bottom plastic insulators. One on the bottom of the truck that insulates the roller from the truck, and one on the top that insulates the screw.

OK, gents.  Lights came today from Evan Designs.  Project completed.  Thanks for all the help and support:  both offers of and moral!

Turns out I didn't have all the endless subassemblies of the rollers from my junk box.  So, I improvised.  I did have the plastic insulator that the roller sits into, and the tiny screw that goes into the roller.

First, I positioned everything so that the screw would be in the very middle of the opening in the base of the truck.  Then I affixed the insulators to the trucks with super glue.  Next I affixed the rollers to the insulators with more super glue, being sure the screw was still in the middle of it's opening.  Allow everything to dry a bit.

PXL_20210208_204026989  PXL_20210208_204035339

From there, solder a red wire to the screw and protect with a tiny piece of electrical tape.  (Tried a drop of Gorilla glue in one of them as an additional insulator, but can't really tell if that helped or not).  Finally, affix the black wire to a screw on each truck.  Test on track with multi-meter.  All good.

Wait another day until bulbs arrive in mail.  Affix those to the wires coming up from each truck/roller.  Test.  Glue bulbs into position (1 with super glue, the other with white glue).

PXL_20210209_231208193PXL_20210209_231212601 PXL_20210209_231215316

Results:

PXL_20210210_011640297PXL_20210210_011648374PXL_20210210_011707608PXL_20210210_011701933

Attachments

Images (9)
  • PXL_20210208_204026989
  • PXL_20210208_204035339
  • PXL_20210209_231208193
  • PXL_20210209_231212601
  • PXL_20210209_231215316
  • PXL_20210210_011640297
  • PXL_20210210_011648374
  • PXL_20210210_011701933
  • PXL_20210210_011707608
Last edited by Brad Trout

I used to work on printed circuits at The Phone Company, sometimes being required to swap out components on PCB's. But as the peripheral neuropathy advances, things don't stick to my fingers the way they used to.  It also seems that the gravity settings in my house have been increased. Parts that used to stay on the workbench keep escaping to the floor.

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