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bad proto locos
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<P>Yes, that typical gear problem is the gear right on the center of the axle.....a little black gear. Sometimes the crack is hard to see, but as someone else pointed out, the usual test is to try to spin them with your thumb while still mounted in the loco.</P> <P>I just checked my packages to be sure, and the bag of replacement gears I have is labelled Athearn SD40-2, and these work for both Proto 2000 and Stewarts. The price shows $2.50 for 6 gears, which you then just press into place with your fingers once you pull off the cracked gear. Then you need your wheel gauge to set them correctly. Easy to do...(and if you are going to r&r some older locos it is a good idea to completely remove the wheel sets for a thorough cleaning of the old grease in the gear case and gunk on the "tires" anyway. What you will often find is not a lack of grease but that most people have loaded up way too much old grease in the gear case and it starts migrating out.)</P> <P>The Katos and Bachmann that I have replaced have much smaller metal axles and these two are interchangeable....at least for the problem models I have had. Newer models are different.</P> <P>I can't recall how much Walthers charged for the 2-pacs of the entire new wheel set, but it was a few dollars per pack.</P> <P>Sometimes a loco with a cracked gear will just run poorly, slowly or with a bit of extra noise, but often will "hop" and snap down the track very noticeably as the gear malfunctions.</P>
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