Freeing rusted parts

[customcutter]

I've been working on the Super AV for several weeks now. I finally figured out why the front right lifting arm was only lifting the tool bar 2-3", instead of the foot of travel that it should have. The bottom arm was rusted into the bracket that connected to the top arm and also clamped the cross bar between the 2 sides. We were able to get the bracket and the lower arm removed from the tractor. I used a torch and was able to free the nuts and bolts that were severely rusted, but after 2 days of heating the cast iron bracket and cooling with water, then picking out chunks of rust with several different dental picks I was still unable to free the rusted pieces.

I finally decided to try using the 4000psi pressure washer after I had removed all I could reach with the dental picks. I started out with the 25* tip and washed in between the gap of the round rod and the bracket from every possible angle and direction for about 1/2 an hour. I tried moving it and still nothing. I decided to use the 0* tip and went at it again for another 30 minutes. I could see water blowing through from one end to the other at several different angles and locations. I braced the part on the bed of the 1 ton truck and was finally able to get it to move.

Obviously this wouldn't work for freeing bolts etc. But there was probably 1/16" gap between the bracket and the 1" round rod arm. It was so badly rusted that rust had actually fractured the cast iron bracket on the bottom, leaving about a 3/4" crack in the piece.

Just thought I would share this in case it helps someone else.

[ajhbike]

Never thought about a pressure washer, thanks. Just had a battle with a through pin on a Higgins articulated bale spear...it almost won.

[inairam]

I have rust suddenly jam the steering support on a cub loboy. One minute I could turn the wheel the next I could not. Now the rust is out oil and grease are your friends! A much better friend than paint.

[customcutter]

I have rust suddenly jam the steering support on a cub loboy. One minute I could turn the wheel the next I could not. Now the rust is out oil and grease are your friends! A much better friend than paint.

Yes, I even thought about drilling a tapping a grease zert in place.

[inairam]

I have some grease injector needles I use on areas like the steering support or on a fast hitch that may not have a zerk

https://www.amazon.com/LockNLube-Grease ... B0779J6HTX