painting advice

I have a John deere 4230 and a 3020 I also have a jd 105 combine. I need some advise from this group, I plan on painting them I don't need show quality but I want them to look nice.Someone told me that if I use John Deere paint all I need to do is powerwash them good and paint them. I've also been told from another person that I need to sand them, I just can't see how Im going to get the entire combine sanded. So what advise do you have for me Thanks in advance Dave
 
Not knowing specifically which paint you have I'm assuming it is a oil based alkyd enamel. For this you will at least need to go over it with a scotchbrite pad to scuff it up so the paint will be able to get a bite on it. Any place that is slick and glossy the new paint will not want to stick. First though you will need to wash it and go over it with a wax and grease remover because any residue of oils on the surface will cause the paint to fail. Any spots where it is rusting should be sanded down to bare metal and primed.
 

You don't need to sand the whole thing. Only the places where you want the paint to stick. LOL. But seriously, somewhere here in the northeast there is a JD dealer that sprays clear lacquer all over tractors to make them shine for prospective buyers. My neighbors bought one that way, and after about three years it was all peeling off. They show up at auctions all peeling too.
 
for the combine, go to the dollar store and get a bunch of dish washing sponges with the scotchbrite on one side. also get a half dozen cans of comet sink cleanser. pressure wash the combine to get all the grease grime and chafe off of er, scrub it with comet and the scotch brite, wash again with car wash soap and water, rinse, blow it off with an air gun and shoot it.
 
I have painted a lot of tractors, I would sand blast all parts that can be removed off of equipment to be painted. the engine parts I would use a solvent of some kind and spray and clean and then use 80 grit sand paper to sand everything else that cant be blasted. Then I would use a itching primer and then I would use a good urathan paint, I use base coat clear coat dupont products. My thing is, if you are going to spend that much time to paint it I would use a good paint that will last. you dont want it to peel or fade. pay me now or pay me later and just do it right the first time. i have restored a 1937 JD B, 1951 MT, 1939 B, 66 Oliver row crop, and working on a WD allis, complete restoration. go to the pic on this web sight and look up Don Knight on the photes and see my work.
 

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