Rust Prevention

Tnbshr · Nov 15, 2020

Good afternoon,
Im restoring a 47 John Deere D. Im doing a complete restoration and want show quality end product. I will be having the paint and body work done by pros. My question is, as I assemble the parts like covers after rebuilding the engine and transmission what should I do to prevent rust from being able form between bolt/washer and the cast covers Im installing? Everything is sandblasted to bare metal including the old bolts.
I want this to be as perfect as possible and last as long as possible it top condition.

showcrop · Nov 15, 2020

The strength and longevity of paint is determined by the prep. Sandblasting does not guarantee rust removal. If you really want it to last the rust needs to be "killed" with rust converter. If this is done, the primer will be able to hold and prevent rust at the spots where bolts scuff the top coat on the finished sheet metal.

showcrop · Nov 15, 2020

The strength and longevity of paint is determined by the prep. Sandblasting does not guarantee rust removal. If you really want it to last the rust needs to be "killed" with rust converter. If this is done, the primer will be able to hold and prevent rust at the spots where bolts scuff the top coat on the finished sheet metal.

Tnbshr · Nov 15, 2020

Im using a metal prep Rust inhibitor on the metal. Im worried that when I bolt a unpainted part on to the tractor what will prevent rust from between the bolt head and the part.

Stephen Newell · Nov 15, 2020

You might find out what primer the body shop will be using. Likely they will use epoxy so you could get some and prime around the holes. Epoxy primer would prevent from rust more than the topcoat. It would just be prudent to involve the body shop. If they see primer
they might think rattle can and be apprehensive.

Tnbshr · Nov 15, 2020

I will give that a try. Thank you for the help

FBH44 · Nov 17, 2020

Use only hot dipped galvanized washers. Keep her indoors, out of the weather.

dpendzic · Nov 17, 2020

it really depends to which sspc level your sandblasting to. I had picture cards that I gave to my engineers so they had a visual picture to match what the contractor blasted to

Tgrasher · Nov 25, 2020

I clean/wire brush all bolts, nuts and washers and then paint with red oxide primer, followed by a color coat. Any nicks/ scratches from tightening I touch
up with an artist brush.

showcrop · Nov 26, 2020

(quoted from post at 21:14:34 11/25/20) I clean/wire brush all bolts, nuts and washers and then paint with red oxide primer, followed by a color coat. Any nicks/ scratches from tightening I touch
up with an artist brush.
<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto64527.jpg">

I did a fair amount of that on a Ford 961. I didn't like the look of the modern fasteners and sourcing the ones that looked good was a pain. I used new lock washers however and gave them a dip in acid in order to etch the plating.

bweb · Dec 1, 2020

Something else you can do with nuts, bolts and small parts is to paint them and bake them at about 180 degrees. When I restored my 69
Firebird I bought a toaster oven at a resale shop for a few dollars and it worked out well.

ASEguy · Dec 7, 2020

I use Picklex-20. It's expensive, but is a great product.

GordoSD · Dec 28, 2020

What he said, DuPont "Metal Prep".

Rust Prevention

Tnbshr

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showcrop

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showcrop

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Tnbshr

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Stephen Newell

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Tnbshr

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FBH44

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dpendzic

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Tgrasher

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showcrop

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bweb

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ASEguy

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GordoSD

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