JD 4010 crowdsource guidance for a newbie

I just acquired what appears to be a nice original 4010 to replace a well-worn 4020 that was incinerated in a wildfire in June.

I'm turning to the wisdom of the crowd for suggestions/recommendations for a couple of questions about my new green machine.

The PO didn't use the hydraulic remotes, and removed one since it was leaking. Unlike my 4020, I'm not finding o-ring or rebuild kits for the 4010 breakaway couplings. What's the consensus on these- rebuild? Replace with 4020 units? Replace with 4020 couplers with ISO barrels? The fire was hot enough to melt the aluminum levers on my 4020's retrofitted ISO couplers- would the heat have distorted the cast housings beyond salvage? Or finally... why can't I just replace the seals in the original 4010 couplers?

The 4010 is also suffering the dreaded right turn lag. I read that it's best to start diagnosis at the steering motor under the fuel tank. My local classic tractor whisperer said to pull the steering valve at the wheel first for him to R&R. Suggestions?

Thanks to all!
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Geeeee one does look a little better than the other. It is sad when a good
thing gets destroyed.
 
AFAIK, all the O-rings and backup rings aer still available at the DEERE dealer. Have you found otherwise?

You can go to the link below and enter the model number, and pull up parts diagrams and part numbers.
DEERE parts
 
Thanks for what should have been obvious to me. I've become so used to aftermarket I rarely think of "first market", OEM parts.

Sure enough, all the relevant O-rings and several other bits like the 1/2" steel shutoff ball, are indeed available. I don't see an R&R kit for the 4010 remotes, but can put one together piecemeal, it seems.

Once again, the wisdom of the crowd comes through!

- David

(quoted from post at 20:34:25 08/09/19) AFAIK, all the O-rings and backup rings aer still available at the DEERE dealer. Have you found otherwise?

You can go to the link below and enter the model number, and pull up parts diagrams and part numbers.
DEERE parts
 

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