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Re: Micro-Trains Passenger Cars

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  • Ken Armstrong
    A lot of advice has been given but not gathered together. Here are the steps I would follow (with apologies for the length - it is easier to do than describe):
    Message 1 of 2 , Jul 15, 2009
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      A lot of advice has been given but not gathered together. Here are the
      steps I would follow (with apologies for the length - it is easier to do
      than describe):
      Seems as if it is this one truck on one car. That suggests it is the car
      and not the track. It also may be that conditions must be just right for
      the problem to appear. MT plastic molding is superb and defects in
      trucks and wheelsets are rare, so the first suspect is the coupler and
      trip pin.

      *Caution:* Z scale equipment is delicate even compared to N-scale so be
      ever gentle and careful.

      1. First make sure the floor of the car is seated properly. It should be
      even on both ends and sides and match your other cars.
      2. The easiest check is to replace the truck with an identical one and
      see if the problem disappears. If this solves the problem, throw out the
      old truck unless it has an obvious fixable defect.
      3. Check the coupler for proper operation by moving it with your finger
      side to side. Does it open and spring back properly?
      4. Check the coupler and trip pin height. If you do not have a gauge,
      see how it mates with an identical truck when both are on the track.
      Also make sure the locomotive coupler is not the problem.
      5. On the MT passenger cars sometimes the top of the trip pin extends
      above the coupler and binds on the bottom of the end platform when the
      truck swivels. Gently push it down almost flush with your fingernail or
      small flat screwdriver. Then check the track end for clearance again.

      If those tests are OK, then check the truck and bolster pin.
      6. Inspect closely with good light and magnification if needed for dirt,
      lint or loose pieces. Remove with tweezers or alcohol wipe.
      7.Loosen the truck pin if tight. There should be a bit of up and down
      freeplay but the truck should not wobble or float.
      8. The truck should rotate freely on the pin and not bind anywhere
      through its entire rotation.
      9. Check that the wheels/axles are seated properly.
      10. Rotate the wheels with a finger. They should turn smoothly and
      usually will spin freely. End to end freeplay should be definite but
      slight. Gentle pressure can be used to narrow or spread the trucks
      frames as needed.
      11. Remove the truck. Inspect the bolster surfaces for defects or dirt.
      Look for flash on the pin.
      12. Remove the wheelsets and inspect the axle points and bearing
      surfaces for dirt or plastic flash from the molding. Scrape off flash or
      wash out dirt with alcohol on a Q-tip. Sometimes flash in the side
      bearings can only be felt with a fine probe run over the surface. Look
      for flash on the truck pin. Note that I can recall finding excess flash
      on MT trucks or wheelsets no more than three or four times in the last
      20 years.
      13. Reinstall the wheelsets and put the truck on the track. It should
      roll freely when pushed.
      14. Inspect for warping and damage. The sides and ends should be square
      and level and the sideframes vertical.
      15. IF all the above fails to fix the problem, check the track by
      rolling a truck through the problem area with your finger on the pin
      hole. MT trucks should roll "silky smooth" on good track. Any hitches or
      bumps suggest a problem, usually with the track but sometimes with the
      coupler pin.

      If all the above fails, punt and send the car back to your dealer or MT
      for repair or replacement. Or consign it to the rip track.

      Ken A.
    • Jim Glass Sr
      Excellent review, thanks, a real saver in more ways than one! JimGl Redmond, WA To: z_scale@yahoogroups.com From: kenarm322@sc.rr.com Date: Wed, 15 Jul 2009
      Message 2 of 2 , Jul 18, 2009
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        Excellent review, thanks, a real saver in more ways than one!

        JimGl Redmond, WA





        To: z_scale@yahoogroups.com
        From: kenarm322@...
        Date: Wed, 15 Jul 2009 18:16:50 -0400
        Subject: [Z_Scale] Re: Micro-Trains Passenger Cars





        A lot of advice has been given but not gathered together. Here are the
        steps I would follow (with apologies for the length - it is easier to do
        than describe):
        Seems as if it is this one truck on one car. That suggests it is the car
        and not the track. It also may be that conditions must be just right for
        the problem to appear. MT plastic molding is superb and defects in
        trucks and wheelsets are rare, so the first suspect is the coupler and
        trip pin.

        *Caution:* Z scale equipment is delicate even compared to N-scale so be
        ever gentle and careful.

        1. First make sure the floor of the car is seated properly. It should be
        even on both ends and sides and match your other cars.
        2. The easiest check is to replace the truck with an identical one and
        see if the problem disappears. If this solves the problem, throw out the
        old truck unless it has an obvious fixable defect.
        3. Check the coupler for proper operation by moving it with your finger
        side to side. Does it open and spring back properly?
        4. Check the coupler and trip pin height. If you do not have a gauge,
        see how it mates with an identical truck when both are on the track.
        Also make sure the locomotive coupler is not the problem.
        5. On the MT passenger cars sometimes the top of the trip pin extends
        above the coupler and binds on the bottom of the end platform when the
        truck swivels. Gently push it down almost flush with your fingernail or
        small flat screwdriver. Then check the track end for clearance again.

        If those tests are OK, then check the truck and bolster pin.
        6. Inspect closely with good light and magnification if needed for dirt,
        lint or loose pieces. Remove with tweezers or alcohol wipe.
        7.Loosen the truck pin if tight. There should be a bit of up and down
        freeplay but the truck should not wobble or float.
        8. The truck should rotate freely on the pin and not bind anywhere
        through its entire rotation.
        9. Check that the wheels/axles are seated properly.
        10. Rotate the wheels with a finger. They should turn smoothly and
        usually will spin freely. End to end freeplay should be definite but
        slight. Gentle pressure can be used to narrow or spread the trucks
        frames as needed.
        11. Remove the truck. Inspect the bolster surfaces for defects or dirt.
        Look for flash on the pin.
        12. Remove the wheelsets and inspect the axle points and bearing
        surfaces for dirt or plastic flash from the molding. Scrape off flash or
        wash out dirt with alcohol on a Q-tip. Sometimes flash in the side
        bearings can only be felt with a fine probe run over the surface. Look
        for flash on the truck pin. Note that I can recall finding excess flash
        on MT trucks or wheelsets no more than three or four times in the last
        20 years.
        13. Reinstall the wheelsets and put the truck on the track. It should
        roll freely when pushed.
        14. Inspect for warping and damage. The sides and ends should be square
        and level and the sideframes vertical.
        15. IF all the above fails to fix the problem, check the track by
        rolling a truck through the problem area with your finger on the pin
        hole. MT trucks should roll "silky smooth" on good track. Any hitches or
        bumps suggest a problem, usually with the track but sometimes with the
        coupler pin.

        If all the above fails, punt and send the car back to your dealer or MT
        for repair or replacement. Or consign it to the rip track.

        Ken A.










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