Allis Chalmers no-till coulter rubber spring replacement

[awhite]

I'm in the process of replacing the rubber springs on our Allis Chalmers planter. Just wondering if anyone else has had any experience doing this. There seems to be a pin that needs to be removed to seperate the rubber spring part from the coulter frame. I've found a parts blowout from Agco but I'm not still not exactly sure how to approach it. Any help is appreciated!

Pin is referenced as 20:

 

[fpw farm]

where did you find the new rubber spring? was it difficult to replace , I have the same planter/coulter and coulters are useless because torsion springs have dry rotted

 

[jeffreycarter72084@gmail.]

Yoy can get them at allis chalmers dealer bur they high as hell