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Best way of preparing cast iron tractor housing for paint

L

Lynny

Member
Wanting to paint mf 135 what is recomended way of preparation sandblasting, paintstripper, steam genny, to get ready for priming sheet metal is no prohblem. I was told by a old timer not to sandblast as u will have sand in places u never wanted it.
 
That's the way a man in Ohio does when preparing a tractor for painting. Soda blasting may be a better way. Here's a tractor he sand blasted. Hal
a48368.jpg
 
Thanks eltoro i have a pressurerised tank i going to look around to see if i can run soda threw it if not i will sand blast carefully.Do you know what kinda primer he uses.
 
He uses an epoxy primer. He always uses Martin Senours CrossFire paint so probably uses their primer and hardener. Hal
 
Keep the sandblaster far away from assembled components - or you run a high risk of being sorry later.
 
I remember CNKS talking about using oven cleaner. I just painted a C farmall and used oven cleaner then pressure washed it. Most of the paint came off and sand blasting was a lot easier and quicker. Use expoxy primer on the cast and paint in the time frame. Use the primer/paint/reducer and harder (if using) from the same company.
 
The problem is the fines from blasting are really bad if they get inside the engine. If you hit some of the old seals or gaskets you may blast right thru them and/or they may already be gone letting grit inside. Going to need to be real careful.
 
Oven cleaner is used to aid in getting the oil and grease off. I am starting a Super M and did not use oven cleaner, just pressure wash. I don't sand blast intact tractors, this one will be wire wheeled and repeatedly washed with soap and water, etc, then repeatedly cleaned with wax and grease remover. I can't use a pressure washer inside my building. Tractor will be stripped of all parts before cleaning.
 
Yes and there is sand in every joint of that 3 point and in every recess anywhere on the tractor. I hope it is disassembled and cleaned up before painting or that sand will be there forever.
 
(quoted from post at 08:25:50 09/02/11) Thanks eltoro i have a pressurerised tank i going to look around to see if i can run soda threw it if not i will sand blast carefully.Do you know what kinda primer he uses.
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Harbor Freight sells a cheap soda blaster. I haven't read the reviews yet.
 
Thanks everybody i gunked and pressure washed i am just going sand it best i can and sandblast what is removable.This paint job dont have to be perfect as i am going to use it to brush hog and finish mow with it and some other chores around the home front.I would rather not have the perfect paint job th have a tractor full of sand to cause more prohblems down the road.
 
be sure to use an acid wash before priming unless you plan to sell it in less than three years. Any little pits in sheet metal or depressions in the cast iron will hold onto little flecks of rust which will slowly grow under the paint. The phosphoric acid converts rust to inert iron phosphate.
 
be sure to use an acid wash before priming unless you plan to sell it in less than three years. Any little pits in sheet metal or depressions in the cast iron will hold onto little flecks of rust which will slowly grow under the paint. The phosphoric acid converts rust to inert iron phosphate.
Click to expand...

Decide what primer you'll be using first...a lot of Epoxy primers do not behave well on top of acid washes. On something like cast, it may be virtually impossible to completely neutralize the acid...causing you tons of heartburn down the road.
 
(quoted from post at 06:49:01 09/07/11)
be sure to use an acid wash before priming unless you plan to sell it in less than three years. Any little pits in sheet metal or depressions in the cast iron will hold onto little flecks of rust which will slowly grow under the paint. The phosphoric acid converts rust to inert iron phosphate.
Click to expand...

Decide what primer you'll be using first...a lot of Epoxy primers do not behave well on top of acid washes. On something like cast, it may be virtually impossible to completely neutralize the acid...causing you tons of heartburn down the road.
Click to expand...
You need to follow the instructions with the acid wash. The little bubbles under the four year old paint on hood panels that had pits and didn't get acid washed give me heartburn.
 
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