To TxJim's list I will add the 245 (newer version of the 240?) It's what I have on my JD 2030, I wanted an easy to remove loader.
I rebushed the knees on my 2030. It might not have needed that, I did not see any improvement. Upper and lower bushings, two per side.
New draglink and tie rod ends did help. I also replaced the bell crank needle bearing (two that are stacked), mine did not look bad.
A BIG improvement was to replace the washer that bolts the draglink arm on. Recommended by user jd110. IIRC he stated JD came out with a fix for loader tractors, that was a thicker washer. I don't know if it was the thicker washer, or torqueing the bolt to spec when the new washer was installed.
The bolt is also longer, 5/8 x 1 3/4" (was 5/8 x 1 1/4") The old washer was .250" thick, the new .510" thick. P/N T42971 $24
Mine no longer "death wobbles" at road speeds when "roading" the tractor.