LL SW1200 Wormgear Problems

Discussion in 'N / Z Scale Model Trains' started by MagicMan_841, Jul 14, 2004.

  1. MagicMan_841

    MagicMan_841 Member

    I have a LL SW1200 that had wormgear problems so I ordered Kato P42 wormgears.

    I just don't know how to remove them from the Kato shaft and put them on the SW1200's...

    Any help appreciated.
  2. NYC1956

    NYC1956 New Member

    Here is how...

    I have done 8 of these. It is not too difficult; just use some care. It helps to have the right tools. I finally bought a NorthWest Short Lines SensiPress. It is the perfect tool for this task. You can also improvise.

    You need to make a jig on which to press the brass worm off the supplied shaft. If you have a drill press and drill press vise, that would work nicely. Invert a drill bit of smaller diameter (than the shaft) in the chuck, mount the gear vertically in the vise and use the chuck as a press arbor. The shaft will smoothly exit the gear. Do not try to pound out the shaft, it will enlarge the hole in the worm rendering it useless. If you don't have access to these tools, maybe you can improvise something similar.

    The original Life-Like plastic worms are easy to remove. Just grab tightly with your fingers and pull with a slight twisting motion.

    The brass worm can then be pressed onto the motor shaft. Again, you may to improvise some kind of fixture to hold the worm square to the shaft while you squeeze the shaft into the worm, maybe using a vise or drill press.

    Good luck with your project. You will be pleasantly surprised at how much better your switcher will run with the brass worms. Mine now run very smoothly and quietly.

  3. MagicMan_841

    MagicMan_841 Member

    Thanks, will try to find something
  4. brakie

    brakie Active Member

    Guys,Is this a common problem with the LL switchers?
  5. Secret Weapon

    Secret Weapon Member

    I had a friend,once, & he did 2 engines for me.They run absolutely wonderful :thumb: He does his as so as he get them.You will not believe that these great little runners are LL. :eek: Just make sure to put jewelers rouge on the gears,before you put back on the frame.You can use a small polishing wheel on a Dremel.Then put back together again.Mine run about 2-3 ties a minute. :D :thumb: Mike
  6. NYC1956

    NYC1956 New Member

    I don't know that there is a generic "problem". It is just that the Life-Like worms are plastic, and they don't run as true as machined brass worms.

    Mathieu didn't say what originally caused his "problem", just that he needed help retrofitting the Kato brass worms.

    The only problems I have heard in the past were with bent or broken contacts, and motors that did not seat properly causing the worms to not mesh properly with the gears. The brass worms don't fix any of those problems; they only improve the smoothness and quietness of the mechanism.

  7. MagicMan_841

    MagicMan_841 Member

    The problem I have is big noise coming from I dunno where. I figured it had to be the worms. It started doing the noise (like a buzz saw) after a small 1 inch fall...

    I managed to get the brass worms on but they're all stripped so my problem is still there. Even worst now the engine barely runs at all.
  8. NYC1956

    NYC1956 New Member

    Uh-Oh. See my previous post. It sounds like there is not enough clearance between the worms and the gears in the trucks. You need to shim the motor up slightly to prevent the worms from binding.

  9. GRSJr

    GRSJr Member

    Why not return the loco to Life-Like for repair? They'll
    most likely send you a whole new engine for free.

    Just call 1-800-638-1470 to make the arrangements.
    Ask for a new worm gear and they'll send you an engine.

    Beats paying for the brass worms and then having the hassle of installing them.

  10. MagicMan_841

    MagicMan_841 Member

    Mike : Thanks I'll look into that.

    Ray : I'll try this if I really can't get this loco to run myself.
  11. siderod

    siderod Member

    Life Like, as i'm sure you all know, have GREAT service.

    I e-mailed them asking how much a new C-liner N-scale frame would be. My signature on my e-mail includes my mailing address (when it works) and lo-n-behold, a week later, there was a box for me from a place i didn't know. i opened it and it was a new frame with a bill:

    Frame: $0.00
    Insurance for full value: $0.00
    Shipping and Handeling: $0.00
    TOTAL: $0.00

    i checked my e-mail and there was a reply saying "Hope you enjoy it...i look forward to helping you whenever i can"

    If you can't fix it, send it back to them and all will be made right at little to no charge.
  12. MagicMan_841

    MagicMan_841 Member

    oh joy

    Oh well now I need to contact them since ONE PIECE OF THE METAL CHASSIS LITERALLY BROKE INTO 2 PIECES !!!!! oh joy!

    So I need a new chassis, a new engine with gears. Oh yeah and a set of handrails... d'oh. :mad: :mad: :curse: :curse:
  13. siderod

    siderod Member


    Can we get a picture of what happened?
  14. MagicMan_841

    MagicMan_841 Member

    One piece of the split frame broke off. On the flywheel side where the frame is especially thin. I am emailing Life Like now. No way I can repair this.

Share This Page