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I opened my Hudson Yellow Belly (6-18043) intending to work on the motor and decided to take a look at the smoke unit also.

Smoke Unit:  It works, but it's anemic.  Much to my surprise when I opened it up, there was no wicking material in the bowl, just the resistor wrapped.  I've read and have in the past when servicing fan driven units, removed the wrap around the resistor.  With this 'puffer unit' I thought I'd check in here first. This is a puffer unit, but I've not seen one in pics in this Forum (ALEXM posted some great rebuilds, but none looked exactly like mine).  I'm thinking cutting off the wrap around the resistor and putting some wicking material in the bowl would be an upgrade. Would I damage the unit by doing what I propose?  I studied the parts blow-up pics on Lionel's site but I didn't see wicking or a resistor.

6-18043 Smoke Unit closed up

6-18043 Hudson Smoke Unit Open

 

 

 

Pullmor Motor: In a different string (https://ogrforum.ogaugerr.com/...6#123059522707410746) it was suggested I do some maintenance on the motor.  I removed the shell and now have no idea how I get to the brushes to replace them or to the commutator to clean it.  I just can't find any screws that would let me do that.  I did see what looks like a "hex 'bolt'? that might be the key to remove the motor, but that seems odd.  If anyone has worked on these engines/motors and can tell me how to remove the motor and open it up, please advise.  The parts blow-up pics on Lionel's site didn't help me much.  Thanks.

6-18043 Hudson Overview

 

6-18043 Pullmor

 

6-18043 Pullmor Front

6-18043 Pullmor Rear

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Images (6)
  • 6-18043 Hudson Overview
  • 6-18043 Pullmor
  • 6-18043 Pullmor Front
  • 6-18043 Pullmor Rear
  • 6-18043 Smoke Unit closed up
  • 6-18043 Hudson Smoke Unit Open
Last edited by ToledoEd
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Yes, you need to remove that burnt sleeve covering the smoke unit resistor + put some wicking material in the bowl to hold the fluid near the resistor. Be sure there is a clear path for airflow from the "puffer exit port" to cross over the resistor and then up the stack.  Also be sure the resistor is in contact with the wicking material, but not wrapped all the way around it.

As others have said, the two silver Phillips head screws hold the brush plate to the magnet field. The hex head bolt does hold the motor to the chassis.

Quarter Gauger 48 posted:

Ed, be careful'  looks like you have opened a big can of worms'.. Perhaps thought should be given regarding the 'Yellow Belly visiting a Lionel Technician...... What do you think'....... Wish I could help you', But this is way above my pay grade'.....

Ted, thanks for the chuckle. That was my thought as soon as i popped the top. But, either i’ll be lucky, or if i don’t and it no longer runs after i fix it, I’ll be good paying a pro to fix my fix. That’s my DIY. I do it myself then pay some one to fix it. I do learn, tho! :-)

Before you get too far, you are going to have to unsolder some wires. Especially the field wire on the brushplate lug after you remove the motor. The motor looks clean, so I don't think it needs to me messed with. Just some oil on the rear bearing.                     The smoke unit could stand some improvement. Wrap one turn of smoke wicking around the sleeveless resistor and pack the rest in the fluid chamber to wick up the smoke fluid, careful not to block the air ports. I would also increase the diameter of the hole in the cover with a slightly larger drill bit, that will also help get more smoke out, the small port is too restrictive.

I find them fun to take apart, but if you're not familiar with these locos, work slowly and carefully or you may create problems for yourself.  Take self-reference photos as you go.  The motor is probably fine.  Did you put a short level on the rails where the loco slows down?  What happens if you run the loco in the other direction around that loop?

Last edited by Ted S

1.  You have a "baffle" type smoke unit.  Jim Barrett did a fine article on how to make these smoke many years ago... no wicking required.  Yes, remove the sleeve.  Then bend the element off to the side, and drill a 1/4" hole through the baffle at about the mid-point of the element.  Bend the element back in place.  This will allow proper air-flow across the element.  I followed these instructions on my 1989 B6sb, and it fairly belches smoke now!

2.  You don't need to remove your motor to get at the brushes.  Just unscrew the brushplate.

Jon

Last edited by KOOLjock1
ToledoEd posted:
Quarter Gauger 48 posted:

Ed, be careful'  looks like you have opened a big can of worms'.. Perhaps thought should be given regarding the 'Yellow Belly visiting a Lionel Technician...... What do you think'....... Wish I could help you', But this is way above my pay grade'.....

Ted, thanks for the chuckle. That was my thought as soon as i popped the top. But, either i’ll be lucky, or if i don’t and it no longer runs after i fix it, I’ll be good paying a pro to fix my fix. That’s my DIY. I do it myself then pay some one to fix it. I do learn, tho! :-)

IF Timco still does them, replace it with a can motor and add ERR control?

usually when someone takes something apart and does not know what there doing ,something gets screwed up or lost  parts or damage to the unit. most repair shops wont repair  it ounce someone  has taken it apart depends on the  tech because it takes the tech twice as long to repair and due to   parts reinstalled wrong or damage n create other issues! 

Gents, I opened her up, and with some good advice, I pulled off the motor housing (thanks Jon) and cleaned the brush plate and brushes (Thanks Gunrunner) all made a bit easier with the exploded parts diagram (thanks BMORAN4). I also removed the sleeve on the smoke unit resistor and put Lionel wicking in the bowl.  Then I decided to replace the headlight with an LED from EvanDesigns. The kind that can take straight voltage from the track...it has a resistor in a lead (?).  I was feeling good. Put it back on the track, connected the tender and powered up...the tender immediately went into conventional mode. No light in the headlight.  I opened it up again on the test bed, checked everything. Meter indicated the engine was getting track power, and the LED would flash briefly at power up and sometimes at power down.  For reasons I do not know, the operation of the engine is tied to that headlight circuit, because as soon as I replaced the original incandescent bulb, she woke up, took commands. I then added the LED in the circuit with the incandescent bulb, both lit and the train ran fine.  I'm not sure how to get that LED to function properly without the incandescent bulb attached.  I'd prefer to keep the LED headlight, but, I'm clueless as to what to do. HELP!

18043 Yellow Belly 2-Headlight small

Incandescent bulb hanging in foreground, LED in Light Bracket.  The EvansDesigns bulb I'm using is 5mm Cool White, 7-19V AC/DC.

IMG_3982

Here she is running and smoking.  

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  • IMG_3982
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IMG_3986

Look carefully at the handrails where they go into the body shell at the back of the cab. They are exposed connectors with the wires for the antenna signal. I believe them to be two brown wires. Separate the two from the wire nut and slide heat shrink tubing down the wires to the bare naked crimp connector. This crimp is known to come into contact with the top of the motor and cause havoc with the TMCC signal....or worse, kill the radio board altogether....which will really be bad, cause that engine does not have modular boards. Hope that helps.....Pat

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