I built a three point hitch for my JD450C. The pics on Image shack mentioned above are of my loader. I copied my comments for the pics below from another site I belong to. I used the backhoe brackets to attatch everything. I was lucky enough to have an extra valve for a winch or a droit bucket on the loader so I just used that to power the lift cylinder. If I had to do it again I'd make it much more heavy duty.
Posted: Mon Nov 01, 2010 1:45 pm Post subject: 3-point hitch for 450C Loader
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Hello all - I've been a member of this site for a little while now and I'm still impressed with some of the outrageous stuff you guys come up with, really pretty cool!! I especially liked Lavoys trencher vidio. Earlier this year I was inquiring about a 3 point hook up for a 450 loader, interestingly the response was underwhelming. I found a place that makes such things for older wheeled tractors but that would have been expensive and required serious modification to work on a loader so, I came up with my own version. Admittedly the lift bars I bought (cat-1) are not up to the job and I had to re-inforce them. I don't think they're strong enough yet. Most of the pieces I fabricated are made from 3/4" plate and 1/2" 2.5X2.5 angle. Took some pictures I thought I'd share.
ImageShack Album - 10 images
If you click on the first picture on imageshack it will give you a little larger picture in a slideshow format.
Image 1 & 2 show the overall appearance with a box blade hooked on.
Image 3 is a view of the cat 1 pin I used bolted onto the backhoe attatchment plate.
Image 4 shows the double action lift cylinder and the bracket I built that is welded to the 1/2" angle I used to bolt it to the back of the loader.
Image 5 shows a couple of the 3/4" cap screws to attatch it, I used three on each side. It also shows the 3/4" plate that supports the angle for the top link connection.
Image 6 shows the system I used for the lift assembly. It will lift and let it down with out downforce and if I put a pin in that hole then I can apply downforce.
Image 7 shows the 1 1/2" shaft I used for a pivot point, one on each side, again using the holes in the loaders attachment bracket. It also shows how I had to reinforce the 2" - 1/4" wall square tubing. I had to strap the lift bars as well. The stress was too great, without the reinforcing it actually put a stress crack in the tubing.
Image 8 is the top link connection. It is 1/2" - 2.5X2.5" angle welded to 3/4" plate which is welded to the brackets bolted to the loader. Everything fits nicely under the top plate of the loaders backhoe bracket. I can take the whole thing off in a few minutes by pulling the cap screws and sliding the 1 1/2" shaft out of the 2" tubing.
Image 9 shows the anti sway chains - they are 1/2" links connected to the drawbar with a 7/8" pin. I used the extra controll valve which was unused on my loader to power the lift cylinder - it's probably intended for a winch.
Image 10 shows the bottom lift arm which I also had to reinforce. I bent two of them into pretzels before I reinforced them. The welding isn't the prettiest but solid. I really should paint it!
That's basically it. It works well and the loaders hydraulics will lift it in a hurry. I need to be carefull of lifting too high, I should put some sort of a limiter on the cylinder or I will bend/break my lift links. The box blade isn't real heavy but I'm sure it will lift some pretty heavy stuff. I read somewhere on here that Digitup, Lavoy, or some one used the 1000 rpm pto on some 540 equipment saying that some JD ptos run considerably slower than the rated 1000 rpm, any comments on that? The lift will lower the arms to several inches below grade and to about 38" above the ground.
Thanx for looking!
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Smokey
