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Old 05-18-2020, 10:49 AM   #1 (permalink)
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Default LGB Uintah slow moving

Question. I have this 2-6-6-2 loco that used to run well but has since slowed down to a snails pace with very little power. When I lift up either set of powered wheels they both are moving. Not sure that means anything or not? It’s been lubed and greased. Wondering if it simply needs motors replaced or not? I imagine it’s over 20 years old. I have had it for 3-4 years, but haven’t been using it the last 2. Help? I’m not electrically / mechanically inclined. Thx!
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Old 05-18-2020, 11:32 AM   #2 (permalink)
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Hopefully when it was oiled and lubed, the gear boxes were taken apart and cleaned as it can't be done from the outside, my Mogul when I lubed it last time I found oxidized lead weight particles all thru it. Would also check the amp draw on each motor and make sure it is an engine problem and not a power supply problem, Bill
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Old 05-18-2020, 06:33 PM   #3 (permalink)
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brushes worn down?
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Old 05-18-2020, 10:15 PM   #4 (permalink)
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mine did the same, 2 new motors were the easiest thing to do for me.
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Old 05-19-2020, 08:11 AM   #5 (permalink)
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Which Unitah?? Early ones had shorter motors than the later ones and the new motors do not fit properly in the old units. I have seen this issue in the 2085D. The non electrical end has a thrust bearing added in newer motors and this motor is slightly longer than the old ones, not the case but the smaller approx. 1/2 inch round portion.
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Old 05-19-2020, 09:29 AM   #6 (permalink)
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Squatch,

Are you able to validate track voltage is not the problem? Dirty track and or drivers on loco? I'd suggest the motors and or idler gears are the likely suspect.

If your not "mechanically or electrically inclined" as noted, I'd suggest you consider having the loco serviced by a facility with parts and knowledge of all things LGB.

I'd recommend trainli.com. I'm sure there are others reputable repair stations too...

Michael
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Old 05-19-2020, 09:31 AM   #7 (permalink)
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Quote:
Originally Posted by Dan Pierce View Post
Which Unitah?? Early ones had shorter motors than the later ones and the new motors do not fit properly in the old units. I have seen this issue in the 2085D. The non electrical end has a thrust bearing added in newer motors and this motor is slightly longer than the old ones, not the case but the smaller approx. 1/2 inch round portion.

Dan,

What's the fix herein? Do you have to relieve the motor block(s)?

Michael
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Old 05-20-2020, 08:24 AM   #8 (permalink)
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I get the newer motors modified by a friend to fit properly. I do not like modifying the motor block to make them fit.
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Old 05-20-2020, 11:36 PM   #9 (permalink)
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Thanks, Dan. I concur with not massaging the motor block.


Michael
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Old 05-21-2020, 03:46 AM   #10 (permalink)
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Simple first step without getting to complicated take the motor out so you can see the opening where the brushes are (next to the red and black plastic bits) and squirt it with a plastic safe contact cleaner. https://crcindustries.com.au/product...150g-2015.html
It may be something simple as dust build up around the brushes.
Did that with the same sort of motor in an LGB Stainz that was doing exactly the same thing and it now runs smoothly.
Worth a try before going down the replace option, its cheap and will not take to much time.
Don't look to deep at all problems first up try the easy options first.
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