I would be careful about putting on too much (multi-layered thick coats) of that primer. Too thick a paint film is actually more prone to chipping when struck by flying objects (stones). 'More' is not always better.
Dam most of you guys are always one step ahead of me and right too. I put two heavy coats of the red rust primer. At first I wire brushed the deck and then used a welding chipping hammer to get the swollen hard rust off the surface too. Now i'm painting a good solid surface. In the past with rust i have had very good results with the alumimum spray paint. I also notice its slippery too on the finish. My chimney pipe in VT since '87 is still rust free and i used the single wall pipe but i have a few coats of the alumimum paint on it. I need to avoid rocks for sure. I have a few land mines that stick up in the high grass that i can't see until i clobber them. Being new to mowing machines with just 6 years experience with mowing now right now i'm mowing with my cadet 108 and my cadet 1200 and i'm learning to keep the deck one click higher than normal so i don't hit the land mines. Its working and no rock grinding yet. Now i need to setup my 3260 deck the same way with the trailing wheels set higher than normal. It doesn't matter where the grass is at height wise as long as the land mines don't get hit.
I wish they made a brush on plastic coating for inside the decks.
Right now the spindles are all assembled and bolted in the deck housing. My next step is to sharpen the blades, check the balance and install them and then adjust the bearing preload on the three spindles and grease them again. Then i need to paint the top side of the deck next. Between installing new bearings in the 3260 deck and in the PTO i shouldn't hear anymore of that nasty growling.
At some point in time i need to drop what i'm working on and get my snow removal stuff ready for the winter. Then i can return back to my repairs. I'm hoping to be done with everything so i can get back to my FEL project. I figure to put it in the garage so i can work on it all winter if it takes that long.
I have one more problem all my 3 int154's are different. My first int154 has the 3260 mower deck with the 3pt hitch, my second 154 is my fel/back hoe project but i'm installing a creeper in it too and my third int154 has the creeper with the IH 54" blade. Number 1 154 is a newer one while the number 2 & 3 are the older 154's. My point is i wish i had a creeper with the 3pt hitch then i can use the bigger 154 tiller on it. Having one int154 with all the options would be nice and more vesital. (spelling sorry) Plus i have my eye on a two stage snowblower too. After last season i figure the snow this comming season we will measure it in feet, many feet i'm sure.