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Best way to clean whole underside to prep for painting?

sheepdog_tx

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I want to treat the undersize with rust convertor, but its pretty caked up under there. Besides jacking it up for a high pressure wash what other tps you recommend?
 
Knock off all the mud and loose dirt with the hose. Get your favorite degreaser and spray the underside and let it sit for a bit. Get a good cleaning brush and give it a good scrub. Rinse with high pressure wash at the car wash station. That should get most everything off.
 
I used a 4-1/2" angle grinder with a twisted wire wheel to make short work of it, then I used rust converter and spray on liner (rubberized paint).

* be sure to use goggles, long sleeves and pants *
Those wires hurt when they hit you at high speed

Here's a pic of the first section I did before putting the transmission back in.
image-110.jpg
 
I used a 4-1/2" angle grinder with a twisted wire wheel to make short work of it, then I used rust converter and spray on liner (rubberized paint).

* be sure to use goggles, long sleeves and pants *
Those wires hurt when they hit you at high speed

Here's a pic of the first section I did before putting the transmission back in.
image-110.jpg

How many pieces of wire did you find when you were scrubbing in the shower?:eek1:
 
Before I get to a wire brush what chemically would be advisable? I'm looking at 3/8" of grease and junk caked on around on average down there. Really baked in too, 30 years of it.
 
With it that thick you'll probably be better off power washing it w/ a good cleaner/ degreaser first.
 
A putty knife or paint scraper, to knock off the heavy stuff then just get after it with the wire wheel. You'll find high speed wire wheels are very effective at removing rust and getting down to bare metal. Chemicals like degreasers and solvents can make a big mess.
 
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