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 Posted - January 09 2007 : 11:38:01 PM
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I am tying to take apart an old Tyco GP-20 and have gotten as far as removing the trucks. There are plastic pieces on both sides of the trucks which cover the wheels but it is not clear how these are removed. A tiny Allen wrentch perhaps? Also the couplers, which are broken, seem to be attached inside a rectangular part in front of the truck. This part has a tiny screw about in the center. Even under a magnifying glass, it is difficult to identify the type of screw, flat, Philips, or something else. Any ideas?
Thanks
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Posted - January 10 2007 : 12:12:30 AM
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The truck sideframes are actually "riveted" (so to speak) to the metal frame of the motor. Actually, how that works is there are two plastic pins on the back of the sideframe, that are inserted into corresponding holes in the frame. The pins are then melted on the inside.
Unfrotunately it's often difficult to replace traction tires and such with the sideframes in place. So your best bet is to carefully cut the sideframes off (insert a chisel blade) and re-glue them in place. If done and handled carefully, they will look fine and hold up well.
The "screw" you're referring to is not actually a screw, but has indeed confused a great many people. It's actually a tiny pin, and the "slots" are where the end of the pin was cut and peened over to keep from faling out. Yeah, Tyco didn't make many friends with that design. Should be a genius grant IQ question based on this [:P]
To replace the coupler, insert a small jeweler's screwdriver between the top of the coupler and the metal pocket plate, and pry GENTLY. Hopefully you will force the pin to lift out. Replace the coupler and pin, and then re-peen the ends over. You might use a TINY DAB of super glue on the pin end if it seems loose. Alternatively, you could scrap the stock couplers and adapt a Kadee draft gear box if you're feeling ambitious...
Hope that helps.
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Posted - January 10 2007 : 10:26:40 PM
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| I wish I had read your reply before I let a know-it-all co-worker get his hands on the truck. He correctly surmised that the sidefram was not screwed on but he thought he could detach it anyway and only succeeded in snapping it off! Anyway, a helpful gentleman at a local hobby shop glued the sideframe back on. He also managed to push in the pin holding the stump of the coupler with a pin vise and open the "pocket". He was able to replace the coupler with one he pulled from a box of loose parts. The truck looks good as new. Now if I could only get ahold of a truck with a working motor, my ancient GP-20 would be back in business. Now how does one lubricate these trucks?
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Posted - January 11 2007 : 09:26:02 AM
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Pre Powertorque motors (MU2's) instructions specify Lubriplate. Those instructions were from 1968.
Some Powertorque instruction sheets listed 3-in-1 oil as a lube, but somehow I do not think 3-in-1 would be good for the delrin parts and other plastics.
I'm certain LaBelle makes a specific lube for it (plastic/delrin components)...try Con-Cor's website, as they own LaBelle now.
GiC or Ray M. is your best bet here.
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Posted - January 11 2007 : 10:26:18 PM
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| I'm working on trying to disassemble the front (power) truck. The whole thing seems to be held together by a couple of rivets with flat heads, one in the front, one in the back. I think if these rivets can be removed, the bottom would come off unless there is something else holding it together, and the top metal rectangle that attaches to the body of the locomotive would also come off. So far I haven't had much luck pushing the rivet out. Maybe if I file the bottom end, it might slide through the truck. Anybody tried this before? Thanks.
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