2046-116 - same as 224E-90/226E-91?

To add to your puzzle - postwar collector plates had tabs on both sides. Modern era collector plates only have the tabs on one side. I think that started with the 8206. Maybe that is all that is available these days. (Or did Lionel switch back?)

I have used the new part to make repairs.

Otherwise, you will likely need to look for a used part.

I don't mind a used part - it just needs to be serviceable.

Here is a 224E-90 that shows the 4 tabs:

It seems to be used on 224, 224E, 225, 225E, 226, 226E, 675, 2025 and 2035 locomotives and is the same as the 226E-91.

The 2055-115 seems to cross reference with the 224E-90, and the 2046-116 seems cross with the 2055-115.

Note, this image has a smooth side, with 2 tabs on the other.

Main Questions:

1) Can a 224E-90  (or equivalent) work in a 2056?

2) Where can I get a Frame Spreader?

3) Is there a better way to replace the collector besides a frame spreader?

I have a frame spreader. I've tried it, I guess I just don't know how to use it.

The service manual has some material on using a screwdriver to lever it into place. 

The replacement with tabs on one side is easy to install. One just has to bend in the aluminum motor frame above and below the plate on the side with no tabs. 

Bmoran4, Jeff Kane sells the frame spreader tool, with part (FS350-FST) @ $20.00.  It is tricky to use, but it does work.  Using a screwdriver tends to damage the fiber plates, that the collector is made from.

Teledoc: Any tips on how to use the tool?

Mine is just sitting in a drawer,

I've used Train Tender's frame spreader multiple times successfully. As Teledoc noted, it is a little tricky. I think it's a bit easier to use when the wheels/axles are removed (allows more spread) but still works with wheels in place. You'll want to place the spreader jaws as close to one of the fiber plate tabs as possible and carefully begin spreading. You probably won't be able to spread the frame quite wide enough so use a flat blade screwdriver to gently pry the tab on one side out of and away from the slot. Loosen the spreader tool and repeat the procedure on the other tab. To install the new plate, locate the tabs into the slots on one side of the frame and reverse the procedure.   

I use this Craftsman spreader tool to replace the pickup assemblies.  Have used it successfully many times.  I also have several collector assemblies available, as shown.

Some folks use Johns tool to spread eunits too.

CW, I think rickoshay pretty much covered how to use the spreader tool.  Like he mentioned, you do have to use a flat blade screwdriver, in conjunction with the spreader.  You swear you need 3 hands at times, but just using a screwdriver, tends to damage the fiber board.  You have to get used to using it.

That tool also does a good job of separating Super O track when working on the layout.

TeleDoc posted:

CW, I think rickoshay pretty much covered how to use the spreader tool.  Like he mentioned, you do have to use a flat blade screwdriver, in conjunction with the spreader.  You swear you need 3 hands at times, but just using a screwdriver, tends to damage the fiber board.  You have to get used to using it.

Thanks guys. I have the spreader and some candidates to try again when I get back home.