Sloppy Dozer Blade. Pins and Bushings on a John Deere 450B 6405 PART 2.
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- เผยแพร่เมื่อ 6 มี.ค. 2024
- Making custom pins and bushings for the angle cylinders, as well as custom bushings for the main pivot pin. Getting closer to having a nice tight dozer.
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It’s so cool that 2 of your very different interests (bagged out dozer and milling equipment) align so well. What a fulfilling project and accomplishment.
If I wanna buy junk I need the machines/tools to fix them! Thanks for watching.
Nice work
You do some good work , Keep knocking it out !!!
Awesome job man killing it
I know you probably won't read this but if you do I'd like you to know my week has been long, my plans were to watch the idiot box for the evenin, I opened youtube and saw your video, I ended watching through the entire video series of the dozer blade repair as I found it so enjoyable wau too much binging but oh so worh it, you now have a new subscriber
Thanks man!! I read and appreciate every comment. It was a lot of work but the blade is now the nicest part of this old clapped out 450B
great progress, well done :)
Nice job young man. Dive in and work with what you have! 🙂👍
Impressive machining there
Lots of time nice job
Gonna work like new😎
You inspired me to work on my JD 450B blade. I thought my pins and bushings were okay and most of the slop was in the curved wear plates that retain the blade on the angling frame and the wear on the back side of the angling frame. Unfortunately, some of the bushings and pins had a good bit of wear and I'll need to replace them as well, the worst being the lower main blade bushing in the angling frame. Fortunately, the bushings in the cylinder eyes are not worn through, so I can just replace these (seems to be a split bronze bushing). The tilt pin you welded up and machined with the modified boring tool on my machine was not as badly worn as yours, but I'll still try to weld it up some and grind it back to somewhat round and close to the correct size.
One thing I found is that the center plate on the blade frame and the center plate on the angling frame are worn at an angle (about 1/8" on the blade frame and 1/16" on angling frame) with the bottom being worn most, tapering to no wear at the center of the pin. Makes sense as the highest blade loads are typically at the cutting edge. Unfortunately I'm not as well equipped as you, so I'm welding and grinding to build it back up close to flat. Did you find these wear surface to be tapered as mine were?
On the main blade pin, I was wondering what material you planned to use for that, and how are you planning to retain the pin? An aftermarket is $215 plus tax and shipping. The bearing surface is 12" long and the original looked like it had a washer welded to the top with the castellated nut and cotter pin on the bottom ( I had to grind the washer off to get the pin out). I'm looking at buying some linear motion shafting from McMaster-Carr (item 6061K38, around $80) which is case hardened 1566 carbon steel, then drilling and tapping holes in each end, and using an oversized zinc plated steel washer (maybe 5/8" with 3" OD for a little over $6 each).
Looking forward to more videos on the 450B.
I didnt notice any taper on the center pin plate... but I wasnt really looking too hard at that. There likely is some extent of wear there.
For the main pin I am just using regular 1018 steel. Its not ideal because its soft and I wouldn't recommend it for a commercially used dozer. However, with the big surface area bushings I made and the use I expect to put on this, I think it will be plenty good. I have another video coming out soon where I make that pin and show how it is retained. I made some changes to the JD design that should make servicing it much easier in the future.
Thanks for watching! I have plenty of 450B stuff coming out in the next 2-3 months as I finish up repairing this entire machine.
Dude JD definitely wanted that to be a pricey wear item😂...... Why is it when you go to a John Deere equipment dealer they expect you to open your wallet at the door and make it rain😂😂😂😂 nice job, don't pick on your old lathe too much it's still a good one , get some more rigidity at your tool post will help get rid of some of the chatter . My first lathe was a little grizzly 19x20 , I made a bunch of mods to it , got it to where it was super accurate and it would survive 50 thou cuts on steel , I miss that little machine but lathes are like a pair of boobs you just ain't satisfied with a pair of A cups
Don't forget about us 350 c guys I went through the same thing
quality joi
What material did you use for the pins and bushings you made.