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Reply to "K-Line K-29212 CC-M upgrade (1 CC-M + 4 motors)?"

@Mike0289 posted:

I think the worm gear in one of the trucks on the trailing A-unit has a crack in it - see attached image.

Definitely cracked.

Any idea where I could get a new worm gear for this set? And how hard is it to pull apart the truck and replace that gear?

If the truck has screws to allow you to remove the wheel set, it shouldn’t be too difficult as the cracked gear can often just be pushed off after removing one wheel with a wheel puller.  Make a mark across the axle and wheel so you can re-align them later.

Putting a new gear on is a little trickier.  I think the right way is to use a press, but I’ve used a vice and a socket to do it, being careful to aline any splines and press slowly ensuring the gear stays perpendicular to the axle.  

If there is no way to remove the wheel set in one piece its a bit harder.  It might be easier to replace the whole truck.

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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