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1960 HO Lionel 0625 Southern Pacific - Rebuild
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 Posted: Fri Dec 15th, 2017 10:06 am
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George W
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A long time friend gave me his childhood 1960 HO Lionel 0625 Southern Pacific steam engine as a gift.  He said it hadn't been run in a while (about 30 or 40 years or more) and a neighbor had attempted to do some repairs many years ago. 

Boy was this thing in rough shape and I know it's not worth a ton of money, but I wanted to get it to run again.   Finding info on this particular engine proved to be a hunt, but found a correct exploded view for this exact engine, turns out there are 3 versions 1959, 1960, 1961 and all are different. 

I've dismantled the engine and cleaned, polished and lubed everything... twice lol. Here's a short list of the problems I've been working on so far, some are fixed, some not so much :

1. Ball bearing for main drive shaft missing - 1/8 ball bearing replacement found.You wouldn't think this is so important, but it keeps the shaft correctly located in frame and keeps the worm gear from trying to climb the axle gear. 

2. Axle gear split, worm gear minor crack.  Located company that makes correct gear.Gear mesh seems to need work though in one spot, not as smooth as it could be, seems to "bump" every X number of rotations  .. but maybe I'm over thinking it. 

3. Side Drive Rods very worn (one would just fall off) found used replacements on eBay.So far so good, still pretty sloppy, but doubt they were ever a snug fit. 

4. Wheels not even close to being quartered. Fixed but still sloppy.Wheel insulators worn, quarter timing can slip - seeking replacement insulators or a tighter wheel set. 

5. Motor brushes worn so bad they almost fall out of motor. - used replacements from eBay 

6. Armature looks rough, one set of windings looks like it may have over heated.Motor runs though now that it has replaced brushes.

 7. Armature commutator looks cruddy. Would need gear puller to get at it to clean it well.Will clean later best I can. 

8. Motor magnet very old and very weak.  Boosted it some with a larger Neo Magnet, still needs a LOT of recharging (how to recharge magnets?)

At this point the engine runs ... but I had to add a second similar Lionel magnet to the motor to improve the field enough that the engine can pull its own weight around a track at less than 100% power (about 75% now) from the Power Supply , a MRC RailPower 1300 .. under powered maybe? 

Motor still get pretty warm, but takes longer to do it and not as hot.Engine sometimes need a push to start and won't run at lower speeds ... anything under roughly 65% power and it just stalls. 

At this point my first two thoughts are, look for gear binding, add a small dot type Neo Magnet to overdrive the old iron magnet. I'm aware some people have somehow installed modern motor in these, but I'd kinda like to keep it original as much as I can. Thanks for any thought or tips on this insane project.- George

Last edited on Fri Dec 15th, 2017 10:12 am by George W



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 Posted: Fri Dec 15th, 2017 11:42 am
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Helmut
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@George
I'm afraid that the suspect motor winding is gone, hence the slow-speed problems. If you can get yourself an Ohmmeter, check the windings by taking the ohms value off the collector from neighbouring segments all the way round. It must read the same value all over. A faulty winding will show as double the normal resistance.

Last edited on Fri Dec 15th, 2017 11:42 am by Helmut



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 Posted: Fri Dec 15th, 2017 09:09 pm
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Reg H
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I would suspect windings as well.  With no "pull" and getting warm it is a good possibility that some of the insulation (probably varnished) has worn off the windings.

Reg



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 Posted: Sat Dec 16th, 2017 09:55 am
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George W
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Helmut wrote: @George
I'm afraid that the suspect motor winding is gone, hence the slow-speed problems. If you can get yourself an Ohmmeter, check the windings by taking the ohms value off the collector from neighbouring segments all the way round. It must read the same value all over. A faulty winding will show as double the normal resistance.
I do have a meter, so I'll try this and see.
Thanks for the tip.



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 Posted: Sat Dec 16th, 2017 09:57 am
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George W
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Just the visual look of some of the winding makes me suspicious of them.



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 Posted: Sun Dec 17th, 2017 10:59 pm
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George W
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Just an update :
Picked up a non-running 1961 donor engine for parts on eBay pretty cheap.While some of the frame and motor design is different, the parts I need are interchangeable.
So between the two I should be able to achieve one good runner.



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