In the box put Farmall
Then scroll down to 560
Then Rear Frame and driving Mechanisms
Then illustration 144 Rear Frame and driving Mechanisms Transmission Ball Bearing 5.....
It is part 38 instead of part 37 (my mistake.)
You will need to see what is wrong before determining what needs to come apart. The reverse idler might come out independently, but the most likely problem is with part 38
second gear drive.