Older JD Disc Help

andyrm66

New User
Picked up a disc at the auction. It's a 10' I think KBL? Not sure.

Anyway, the front gangs are very sloppy - the disc works and works well. However the disc axles on the front have about a quarter inch of slop. The rear seem tight but a couple are running warm. Dunno If I'll be able to get grease in them.

On the front I think both need rebuilt. The P/N one of the bearing shells is kk 5020-B

Its loud and squeaky, but it works pretty good. Though I'm getting troughs on the outside edges.

What disc is it? Is it worth rebuilding?





 

I agree with ET that it's a model KBA. Tn not have as deep furrows(troughs) one needs to add a furrow filler attachment pictured below. Your disk harrow is leveling soil better than I remember that model would level the soil.

47683.jpg
 


I had one very similar to yours. I think that your discs are worn down to half as big as they are supposed to be. You can leave a small one at each outer rear end to reduce the troughs.
 
Jim, look again, That is a rigid frame non angle adjust disk so it cannot be any of the KB series and the KBA was a drag tupe disk with a wheel carrier designed later that could be bought and added to the drag disk you already owned or bought as a new wheel disk and the gangs were carried with chains on the outer ends and the angle was adjusted by pulling pins and moving then to a dillerent hole in the bars that attached to the toung that pulled the outer ends of the gangs. I had several KBA disks and liked them That problem he is having is why I would not own one ov that model disk. And the KBL is a 3 point hitch version of the KBA. The only way for him to get a halfway level field is to have the furrow filler disks attachment on the ends of the back gangs with the 3" smaller blade. I don't know if his particular disk has sealed bearings or the grease type. The other poster is correct in that it is an R model. I have had 2 different fixed angle disks and they were disgusting, took more power to pull than an adjustable gang and left that furrow and you very seldem wanted that full angle cut. I never did find out what model that is that I was asking about somebody posting the pictures for mr but I am sure it is in the KB series but have no idea jusy what the model is but it is not the KBA as the hitch is way different.
 

Leroy
Thanks for correcting my typo. Danged "oldtimers" is acting up again not to mention poor proof reading! I don't know why I typed KBA when I meant to type RWA.
 
Good info. It does have provisions off the back but someone cut off whatever was attached. To get it that smooth I had to go over it with the dic just an inch or two in the ground - if it was all the way down it was bad with the furrows on one side.

Man, going to cost an arm and a leg for bearings. It needs at least 6... Not sure if its worth it.
 

Put a good Spring-Toothed Harrow about 2' wider than the disc on the final pass over the field and there will be no marks left..

Others used a simple Drag or maybe a Cultipacker between the Disc and the harrow..
 

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