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John deere 566 pickup chain

256 Views 8 Replies 4 Participants Last post by  Hawkins2015
So I'm in the process of replacing some worn out sprockets on the pickup and while in there said may as well do new chains too. Doesn't make sense not to start fresh. My problem is that when I went to install the chain with calls for 42 links including the master it was too tight to put the master link in. The old chain was really loose. (probably a combo of worn sprockets and stretched chain)

The tech manual says to loosen the bearing bolts and pry the chain tight. But in my reading online it says to only do that if the chain is loose. So my question is what do I do to get the chain to fit? Can I use a half link? Is there a way to do this correctly?


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No offset linked needed & chain would be way too long!! . Assemble connected chain on both sprockets then slide both sprockets on hex shafts simultaneously. BTDT several times with new chain. At some point JD even offered that chain connected with no master link coupler. There's also a tool one can use to squeeze links together so coupler link can be installed BUT space is very limited for installing that short chain. Zip tie can also be utilized to pull chain together to aid in installation of coupler link then cut zip tie..
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Pettibone do you own/operate a JD rd baler? As I stated a offset link could cause that short chain that has NO IDLER SPROCKET to flop on sprockets & possibly climb sprocket teeth then BREAK. That chain powers starter roller & ultimately the pickup attachment. My advise is repair back to the way it was designed without an offset link. I've been utilizing JD rd balers with that 41 link chain plus coupler since 1987. This doesn't include my experience repairing them beginning in 1983 when the 430/530 was introduced.
According 566 parts catalog starter roll drive chain was RC60H. Yes a roller chain should be operated without too much tension.
You're very welcome. Just lubricate chain & you should be fine. BTDT several times
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