Lionel Modern F3, 8652 Santa Fe

[rtraincollector]

This takes a while to download but you need to goto page 415 once it downloads. this is a diagram of your truck and part list for it. 

https://www.lionelsupport.com/media/supplements/Supplement1to9/1Complete.pdf

then you can call Jeff Kane for your parts or who ever you wish. www.ttender.com is his website

[cbq9911a]

The gear is attached to a shaft that has a gear at both ends.  There are 2 bushings that fit into a slot in the truck frame.  The gear on the outside can loosen on the shaft.  I've never had a gear pop out on me, though.

The shaft and gears is available from parts dealers and drops right into the truck.

[Mr.D]

I too have a similar problem. My Santa Fe 8352 worm gear and axle and drive gears all seem to be popping out! 

Good luck with your fix. If  find anything I will let you know. Otherwise I might have to purchase a new power truck.

~Nick

[redray205]

I have an 8652 f3 engine, and the plastic drive gear (between the axles) pops out of the truck frame. I push it back in and the engine goes another few feet before it happens again! The motor/engine sits there and revs up going nowhere.

I looked up the motor truck in the "modern" parts and diagrams book I have and it calls for a "pivot bushing". Is this what keeps the gear in place or am I missing something else? How to Fix??