View Single Post
  #17   Report Post  
Posted to sci.electronics.repair
Tim Schwartz[_2_] Tim Schwartz[_2_] is offline
external usenet poster
 
Posts: 151
Default Lionel 646 engine repair question

On 1/20/2010 8:33 AM, wrote:
On Jan 20, 4:07 am, Sansui wrote:
On Jan 17, 9:37 am, "





wrote:
This may be the wrong group to post this question to however I was
hoping that someone familiar with my problem may read this and be able
to offer some advice.
I have a 646 Hudson steam engine that I received with the train set
that my Dad bought me in 1953. The set comes out now just briefly for
the holidays,
(space is limited).
This year while cleaning and lubricating my equipment I noticed that
there is a gear on the left side of the engine between the most
forward and center of two of the six large wheels in the center of the
engine that seems to wobble on the post it rides on. The post looks
like its ok. It just seems to be the hole in the gear that has opened
up considerably.
This gear, about the size of a quarter was just "placed" on this
shaft, however with the large wheels in place it is captive and cannot
be removed from the shaft without removing these two of the six wheels
in the center of the engine. The wheels seem to have been pressed on
to their shafts and I don't want to force anything. The engine still
runs well, however this gear wobbles as it idles between the two
wheels.
Luckily, the teeth on the gear as well as the teeth on the wheels are
not chewed yet, but if this situation persists I'm sure they will be.
I'm certain that this can only get worse if neglected.
I have always maintained and even rebuilt many pieces of my set over
the years but I've never disassembled an engine drive before. Can
anyone more familiar with this kind of dissasembly please advise me as
to how to go about removing these driving wheels without damaging the
engine, the axles or motor assembly? Or if there is a more appropriate
newsgroup I might present
this question to I would very much appreciate being advised of that as
well. I've tried rec.models.railroad but never received an answer.
Thanks very much, Lenny


Reply Reply to author


If you can find the center, where the gear should set, you could use
jb weld. I know, it isn't the most professional fix, but it's cheap
and works well. My cousin used it to temporarily reattach a spindle
on a farm truck. That was two years ago, and still going. Make sure
to get the good jb weld, and not the quick set. You should clean the
area out with rubbing alcohol before applying the jb, but be tidy with
the alcohol, it can goof up old paint, plastics, Bakelite, printing,
decals...

-J- Hide quoted text -

- Show quoted text -


I know that JB Weld is great stuff. My son raves about it all the
time. Are you suggesting to kind of jam it in between the shaft and
the eccenric hole in the gear to take up the space? And if so then how
would I keep it from adhering to the shaft?
Also the aluminum clip idea sounds like a good one but I think that if
I went that route it would have to be a section from the pop top to
realize the thickness I need. And wouldn't steel or brass be a better
choice though? Lenny.


Lenny,

I like the idea of the aluminum, as it will be the softest part there,
so it will take all of the ware. You might need to replace the shim
every few years, but that's not a big deal once you've figured out the
shape.

Regards,
Tim Schwartz
Bristol Electronics