JD 210 Disk

LonM

Member
We've had a 15' 210 JD disk for over twenty years. It seems like it needs repairs about every 40 acres or so- mostly gang bolts and gang bolt bearings. The gang nuts will loosen over time as well, but we have mostly fixed that by adding a second nut to the gang bolts to prevent them from loosening. The front gangs have three bearing standards, and the back only have two. Would this implement become more reliable by adding a third bearing standard to the rear gangs? Does anyone have any ideas for making this disk more durable? It has the regular standards, not the rock flex.

Thank you for any help!

Lon
 
Not familiar with a JD disk. My Oliver disk just would not stay tight. Not even with 'nut locks',or double nuts. I finally put a spot of weld on the nut to the shaft. Then it stayed tight. To remove to change a bearing,I simply ground off the spot and easily unscrewed the nut.A bit of cleaning with a file and it was good. Even reused the old nut....
 
Have you seen these
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I have owned and use several JD 210 disk. I never had an issue with the bearings or gang bolts. The only reason the front gang has three bearing holders is the front gang cut the ground first so it has extra support.

First off are you just replacing one bearing at a time????? If you are then your making extra work. Unless the bearings on one gang are all newer than 1 year I replace that entire gang's bearings when I do one. Then are you getting the gang bolt tight enough???? The disk blades should ring like a bell when they are tight enough. IRC that is around 450 foot pounds. The gang bolt will usually break before it comes lose if it is tight enough to begin with.

The disk gang wrenches make this easier. The one with the square goes over the spool and the hex goes on the nut. You slide 4-6 foot long pieces of pipe over the handles of the wrenches.
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Another key to keeping the gang bolt tight is cleanliness of all parts. Make sure the spacers and blades are clean where they mate. Any dirt in there will turn to powder, and the bolt is loose. Put a tool box on the disk to hold the wrenches, and I shoved the cheater pipes into the axle, (weld a ring on the side of the pipe for a chain to the frame), so you can tighten them in the field as needed. I always thought the 210 was overrated. Didn"t like rocks.
 
Thank you all for your replies. We always tightened the nuts with long cheater pipes to get them really snug, but they still would loosen over time. I plan to put on new nuts as I go back together with the new bearings I need on one gang. Maybe the re-used nuts were loosening up too much, as the new nut I put on a few years ago turned off quite a bit harder than the older ones...

We always changed out all the bearings on a gang at once.

Thanks again- YT is a great source for information.

Lon
 

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