Marking on Lionel Pullmor motor

I'm guessing the numbers are just mold numbers and nothing significant. Also, those are not postwar motor brush plates...

As for the gear replacement, with out your specific model, I can't be sure, but it is likely a 610-8806-576 They are not available from Lionel proper, but@Harry Henning of Henning's Trains, a forum sponsor, has it in brass: https://hennings-trains.shopli...-brass-13647485.html

Marks like that are usually mold marks. That way, if trouble develops in manufacturing, they know what portion of the mold to investigate.

One mold may make 32 of the same part, or more, so the individual numbers indicate a different part of the mold.

@Grampstrains posted:

If you look at those brush plates closely, they are not the same.

Besides the big # 1 & big #2, please share with the rest of the class,….

Pat

@Grampstrains posted:

the armature hole on 1 is lower than on 2.  I told you to look close.

It is an optical illusion due to the different angles to the camera.. Both are 8010 variant brush plates.

I thought the 1 and 2 would be where to put the motor, front or back!   I often wondered about those as well, but I never bothered to chase it down.

@Grampstrains posted:

the armature hole on 1 is lower than on 2.  I told you to look close.

I’m not a told person,….I knew they’re the same brush plates, wanted to know what in the world you saw different ……besides the obvious angle difference the photo was taken,….now you can be told,….the motor still attached to the truck is sitting flat on the table …..the other motor the fella is holding on a different angle in his hand,….he can play musical brushplates all day long,….they’re the same…

Pat

Well, this is interesting... looking through the documents, one can see Lionel's schematic shows the 1 and 2 very clearly! However, the motors are the same part number(600-8950-100)...

https://www.lionelsupport.com/...Complete.pdf#page=10

Motor placement & wiring - #1 gets blue wire on the left brush yellow wire on the right brush during assembly. The wires are switched for #2... this wasn't as important until electronic reverse units were used that had return-to-neutral-before-forward or just forward after power down rest.  With the old e-unit, both motors just had to have the wire colors switched between the two motors, the start-up direction didn't matter.

My guess is for a dual pullmore motor engine, #1 at one end and #2 at the other end, wiring reversed  from one motor to the other so that the rotation will let the motors work together.

Thanks for all the comments/information and after further investigations at looking at several engines with pullmor motors, it looks like pullmor's with the 1 & 2 designation are on engines with electrons e units.  Every engine I looked at with mechanical e unit didn't have numbers, only the ones with electronic e unit.  So this seems to go along  with Rob's comments above, it's to distinguish between front and rear motor wiring with electronic e units.

Also thank for the Hennings connection.

Thanks again,

Bob D

@rad400 posted:

Thanks for all the comments/information and after further investigations at looking at several engines with pullmor motors, it looks like pullmor's with the 1 & 2 designation are on engines with electrons e units.  Every engine I looked at with mechanical e unit didn't have numbers, only the ones with electronic e unit.  So this seems to go along  with Rob's comments above, it's to distinguish between front and rear motor wiring with electronic e units.

Blimey, I was right!

@gunrunnerjohn posted:

I thought the 1 and 2 would be where to put the motor, front or back!   I often wondered about those as well, but I never bothered to chase it down.

The numbers denote the mold cavity. Nothing more, nothing less.

TRW

@PaperTRW posted:

The numbers denote the mold cavity. Nothing more, nothing less.

TRW

If the markings on the brush plate are mold markings as initially suspected in the thread, what do the markings on Lionel schematic example as noted above refer to then?

@bmoran4 posted:

If the markings on the brush plate are mold markings as initially suspected in the thread, what do the markings on Lionel schematic example as noted above refer to then?

A few things to think about.

First, I can assure you that there is only one tool to make that version of the part, and it has two cavities.

Second, if the molded numbers actually meant something during assembly, then there would be unique part numbers assigned to each. There aren't. This goes for both the brushplate as well as the entire motor with the brushplate.

Lastly, remember that for every #1, there's a #2. What happens when the part is used in a single motored engine? Trust me, they didn't throw out all those #2's just for the sake of having a motor with a #1 on it.

So what's the answer to your question? They're shown that way on the schematic as that's likely how the sample product used by the CAD illustrator was built.

TRW