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Greetings, all. Returned recently to model trains for the first time since I was about 11 years old. In reading this and answering questions, please keep this in mind: I'm a klutz, and it's a miracle I didn't flunk shop class 40 years ago.

 

Trying to install Kadee 743s on an MTH U25B with scale wheels. Trying to use the four screws that were in the pouch with the snowplow. Have only tried the rear so far - one side went in OK, but doesn't seem to snug tightly. The other side won't advance beyond a few turns into the mounting hole (tried all the screws - same result).

 

Am I doing something wrong? Do I need to use a tap or something to clean up the mount hole? Could I have messed up the threads in the hole? I took a look using a flashlight and didn't see any burrs, but then I might not know what I'm looking for.

 

Don't have the Kadee height gauge yet, but plan to get one.

 

Thanks in advance, David

 

 

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I have the same locomotive and the same couplers it all went together with the supplied screws. The smaller ones are for the coupler and the larger for the plow. You probably won't be able to mount the plow, the coupler trip pin is in the way.I didn't use any shims. 

If you mounted plow first take it off.

The supplied screws are somewhat questionable at times. I use 2mmx8mm machine screws and they work great. The regular Kadee 740 will fit in the U25 and just clear the claw mount on the power truck, but the 743 is a great choice. I didn't mount the snow plows or foot boards (Santa Fe took them off as a safety hazard). The basic snow plow sits a little too far out for my tastes.

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