Part differences from 853 to 852? My attempt to change transport speed direction

[kavisiegel]

I have an 852 and I use it to tow a trailer. I sure wish there was a transport speed available with the trailer.

I've looked at a few diagrams to try and figure out what the gearing difference is and I'm a bit overwhelmed.

Anyone know already which parts I'd need to swap?

Thanks!

 

[kavisiegel]

Well I took the wrong approach the first time around. Turns out that on Earthtool's website, they say:

"based on which direction the worm drive gear for the axle is cut"
BCS 852 - 13 HP - Earth Tools

I checked out the parts diagrams at the BCS website and it looks like:
853 uses part 56456476
852 uses part 56456478

I assume all I'd have to do is swap out that part?

 

[Ford850]

There must be a difference in the lock-out of transport too, maybe in the external linkages, since they both lock-out that top gear in opposite directions. A call or email to Earth Tools might be worth it to get the best answers.