I have a Lionel C&O SD-28 diesel engine from 1994 that has a stripped nylon worm gear in the drive truck. Apparently, 2 hours of operation caused the brass worm gear on the motor shaft to strip the nylon gear on the axle. Is the nylon gear replaceable? If so, does anyone have a part number and/or source for the part? I also cannot figure out how to get the axle out of the plastic truck housing...do I need a wheel puller? Thanks!
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Use a center punch to tap the wheel out on the non-geared side. Brass repos are available to replace the plastic gear. 610-8806-576.
I believe the gear is 610-8806-576, or that this gear should atleast suffice. They are not available from Lionel proper, but @Harry Henning of Henning's Trains, a forum sponsor, has it in brass: https://hennings-trains.shopli...-brass-13647485.html
You will want a wheel puller and you will need to get crafty with a cobbled backing plate (I've been known to use a small socket) to position the gear on the axle. You can use a vice to gently press the wheels back onto the axle (although a proper press may be preferred).
Thanks Chuck and bmoran4! Using the center punch and more force than I would have thought necessary, I was able to get the wheel off, and I've ordered a new brass gear from Henning's Trains. I'll use my vise to press the wheel back on after I put the new gear in.
Your rapid and very helpful responses prove once again that this forum is the best!!!
Dale
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