The output seal is not a difficult job.
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Like @Lifelong40Fan said, you can change the seal easily. The rest requires disassembly since the bearing is pressed in. Once you disassemble you need to rebuild and check backlash and mesh patterns. No point in doing that unless you're gear swapping or like to create extra work for yourself.Hard to tell, for example, if the slinger and bearing that is circled will move with the shaft or are they pressed into the housing and onto the shaft? Please forgive my ignorance. Just not something I have dove into before. Also, it's not a must do; more a nice to have.
I disassembled the axles on my '85 4Runner maybe 15 years ago, wire wheeled everything down to bare metal, and then used POR15 metal prep followed by POR15 paint. Not a single issue to date and it has been used extensively in the woods for hunting. I did have access to a steam cleaner during that process and, between the steam cleaner and Simple Green, I got everything degreased very well. Or at least it was well enough. Ideally you should put a top coat over POR15 as it's not entirely UV stable but this 4Runner was garaged when it wasn't in the woods so the paint is still fairly glossy.At some point I’ll probably have to re-paint a lot of the cast iron that I painted. The porosity holds on to a lot of the oils and contaminants which in turn greatly hinder adhesion. You’ll know right away when you go to tighten a bolt to a part and all the paint around it cracks out and chips off.
I won’t go through the trouble of painting parts like steering arms, knuckles, diff housings, etc… without a really good solvent/acetone bath and sandblasting. Unless you’re just going to paint it with spray paint, then never mind what I just said.
I don't know yet. Tempting though since it lays down pretty smooth with a brush. Would have to figure out the topcoat. Maybe something like Eastwood 2K chassis black. An alternative would be the Mastercoat products. They have the complete line from metal prep to topcoat.Are you going to use POR15 again?
I think the difference there is the acid-etch step in the prep? Might be a better option than the standard primer and paint routine, especially if everything is going to be black.
Well it might...if I had a timeline. Guessing I would have eventually talked myself into pulling the axles and thirds but a little encouragement never hurts. Of course some of the decision making is around prep and painting. If I wanted to have the axles and thirds media blasted, for example, the only way to do that without taking the guts out of the thirds is to keep everything together.This far into why not just rebuild the axles? I get it there has to be a stopping point but I think you past that awhile ago. And now you’re all the way there. If you pull knuckles to rebuild and paint you might as well pull axle shafts and then drop third. It’s only a few more bolts. Then you can see what the gears look like. Just seems like your kinda all in on this one to me seems like one more day or tearing down isn’t gonna hurt the timeline.
Look at it as a wonderful opportunity to learn everything there is to know about setting up Landcruiser thirds! You could be the next authority!a little encouragement never hurts.
Just seems like putting that much time and effort back into a rig and then putting it all on old bearings and seals is a tough one. I mean I guess if you don’t touch em you atleast know where the next possible project is once you start driving it.Well it might...if I had a timeline. Guessing I would have eventually talked myself into pulling the axles and thirds but a little encouragement never hurts. Of course some of the decision making is around prep and painting. If I wanted to have the axles and thirds media blasted, for example, the only way to do that without taking the guts out of the thirds is to keep everything together.
Yup, easy enough to crack it open after it’s primed.. If I wanted to have the axles and thirds media blasted, for example, the only way to do that without taking the guts out of the thirds is to keep everything together.