Repair Advice

It’s a press fit, more than likely it just spit the wheel off. Best remedy for that fix is to simply reattach it with some Loctite shaft lock. 680, 640, or equivalent. Carefully take the truck apart, get the side frame out of the way, CLEAN YOUR PARTS!! And then apply the loctite compound to the wheel only, and push it back on till it sits where it was. Be mindful of the spur gear arrangement as you lower that geared wheel back towards the others,….check your gauging vs. the other axle set, and let the loctite cure for a while, …overnight is best …

Pat

@harmonyards posted:

It’s a press fit, more than likely it just spit the wheel off. Best remedy for that fix is to simply reattach it with some Loctite shaft lock. 680, 640, or equivalent. Carefully take the truck apart, get the side frame out of the way, CLEAN YOUR PARTS!! And then apply the loctite compound to the wheel only, and push it back on till it sits where it was. Be mindful of the spur gear arrangement as you lower that geared wheel back towards the others,….check your gauging vs. the other axle set, and let the loctite cure for a while, …overnight is best …

Pat

I haven't used the Loctite products you mentioned.  How tight does the dry fit need to be in order for them to work?  Is some play OK?

@harmonyards posted:

It’s a press fit, more than likely it just spit the wheel off. Best remedy for that fix is to simply reattach it with some Loctite shaft lock. 680, 640, or equivalent. Carefully take the truck apart, get the side frame out of the way, CLEAN YOUR PARTS!! And then apply the loctite compound to the wheel only, and push it back on till it sits where it was. Be mindful of the spur gear arrangement as you lower that geared wheel back towards the others,….check your gauging vs. the other axle set, and let the loctite cure for a while, …overnight is best …

Pat

That seems simple enough, I appreciate the quick information! Thank you

@Mallard4468 posted:

I haven't used the Loctite products you mentioned.  How tight does the dry fit need to be in order for them to work?  Is some play OK?

Ideally, snug slip fit is best , ….I seriously doubt it got wallered out that badly if it just happened.

Pat

That is, alas, endemic to K-line and K-line derived locos of that era. I recommend dismantling the truck, thoroughly cleaning the axle and wheel, and Loctiting it in place.     Good luck! 

Mitch

@Mallard4468 posted:

I haven't used the Loctite products you mentioned.  How tight does the dry fit need to be in order for them to work?  Is some play OK?

No significant play can be tolerated when using most retaining compounds, including the ones mentioned.  If you're actually filling gaps enough for wobble, it's pretty unlikely that this repair is going to go well.  With wobble, you'll probably need a new wheel.