Just roll or brush yellow on John Deere 50 rear cast hubs?

andy r

Member
I have heard of more and more people spraying the sheet metal and brushing the course cast iron castings on a tractor. Cleaned the rear hubs that go from the axle to the rim today. Metal is fairly course/grainy. How does a brush work? Is a primer necessary under the new yellow? Did John Deere originally prime them? Any other ideas appreciated. Thanks.
 

I'd spray some rattle can primer on it. Then just brush the yellow on. You can kind of dab it on to eliminate the brush marks. I usually use a regular brush first, then after it dries hit it again. One of those foam rubber brushes works nice for this, especially the second coat. Again, use the brush to dab the paint on. Afterward, you'll never know it wasn't sprayed on.
 
If you're going to spray the primer you may as well spray the color too.

The whole point of brushing the paint on is to avoid all the hassles of masking.

I have had very good results with a QUALITY foam brush (not the 50 cent ones, they last 30 seconds) and multiple coats of paint. After the first couple of light coats you can lay the paint on pretty thick, and then it will flow out. Gives you a nice "candy coat" finish.
 
(quoted from post at 16:14:08 12/21/20) I have heard of more and more people spraying the sheet metal and brushing the course cast iron castings on a tractor. Cleaned the rear hubs that go from the axle to the rim today. Metal is fairly course/grainy. How does a brush work? Is a primer necessary under the new yellow? Did John Deere originally prime them? Any other ideas appreciated. Thanks.

Just grab the can of yellow and a decent brush and have at it. Do not thin the paint. Cast iron soaks up a LOT of paint. You'll never get enough paint on by spraying.
 


I agree with most of what others have said. Prep is still the key! no rust or loose paint or grease or silicone. The paint vehicle (solvent) can attack prior paint and after a few years start lifting it. To prevent this and just plain peeling, you should prime any part where you want your new paint to last.
 

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