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Complicated dozer lift mechanisms

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16 years 8 months ago #13150 by MikeA
Old Magnet,

Yep, I'm the guy who owns it and gets to do all the upkeep and maintenance. Right now most of my time is spent keeping as much of it as possible running and generally kept from getting any worse than it already is. I try to restore something once and awhile, but much will have to wait until retirement (not all that far off!). House building slowed things down for a year or more and there's more on that to do before I can get serious on the old stuff again.

I put some more detailed photos of the Anderson blade on the website: groups.msn.com/MikesRustyandShinyStuff/shoebox.msnw

A few people have been interested in the Anderson blade before. It's a nice design.....simple and strong.....just how I like it. No relation to me though. Ha!

MikeA

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16 years 8 months ago #13153 by Old Magnet
Thanks for the picture....that's the first time I've seen one open to where you could see the hydraulic tilt mechanism....really is a good design.

Is that a "48" Studebaker sedan? My folks had a "47" which I seem to recall had a slightly different grill. I'm sure you've heard the term "Steadybreaker"....it was one of them;) ;)

This is the blade that I would like to combine features on.
I am curious as to how the push arms attach underneath. Have you ever seen one of these? They have parallel springs and I can't tell if they took advantage of the spring mounts for the blade or if the arms go all the way back to the track truck pivot shaft.

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16 years 8 months ago #13181 by MARCOTEN
hi, i want to mount a blade on my fifteen, but without hydraulics, what is possible??
i have a alternator on it so i thought about a 12volt cable winch., has anyone better ideas?? hand operation is not a option i think.:D

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16 years 8 months ago #13183 by ccjersey
Just depends on if you want to go hydraulic with a 12V hydraulic power unit or cable with a 12V winch.

I think the resevoir on the usual hydraulic unit would be a little too small, but maybe not. After all, if you took some time filling the system, once you got it full, your resevoir would only have to hold the difference between the stroke volume on the front and back (around the rod) of the piston in the cylinders. So absolute minumum tank capacity equal to the volume of the cylinder rods. The units are available in double acting or single acting valving and can either use a separate lever operated valve or usually integral electric solenoid operated valves you would operate with a double throw, momentary contact toggle switch.

Then you would have to worry about cooling the oil:)

D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time:D

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16 years 8 months ago #13197 by MikeA
Hey Old Magnet,

I put another lot of pictures on the website, I think on page 4 of "Construction Equipment. I think they show a little better how it's mounted. There is a weldment on each side that bolts to the frame, the front of the weldment has the attachment for the upper end of the cylinder and the lower rear has the mount for the push arms. Again, a neat little bolt on package!

The photo you sent shows how small the cylinders were on a larger machine. Clearly an advancement of seals and pumps, I'd say. Higher pressures surely were required to operate such small cylinders.

If you'd like, I can email larger format photos that you can blow up a little more. I took a million when I did the restoration. I'll take some photos tomorrow of the other blade with the hydraulic angle adjustment. I've only used the angle adjustment insert on the HG a few times, but found that it was awkward, at best. Unless the bite of the cut is totally level it will, of course, cut at different depths at the front and back of the blade. Even when trying to level or grade loose material it causes problems. The blade also can be removed by just pulling the two large pins at the front part of the blade mount.

Hope this helps.

MikeA

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16 years 7 months ago #13879 by MikeA
Old Magnet,

I posted some more photos of the angling Anderson blade on my website: groups.msn.com/MikesRustyandShinyStuff/shoebox.msnw I'll leave them in the new folder for awhile.

I hope this helps shed a little light on how they did the angling with hydraulics.

MikeA

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16 years 7 months ago #13885 by Old Magnet
Hi Mike,
Thanks for the photo's.....I believe I got it.
Fabricated the two pusher channels some time ago but never got to the tilt mechanism....another of those back burnered projects. Have both a D4 straight and angle blade dozers but something smaller would also be nice.
Looked over your utility project pics.....had pretty much the same drill with some 1200 ft runs. Like that SS tank:) Did you have to put sprinkler system in the house to???

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16 years 7 months ago #13890 by MikeA
Hi,

Yeah, it was as they say, an interesting time. They didn't require sprinklers on the approved plans and I thought they were there buried in documentation too confusing to understand. I had heard they were required on all new construction here in sunny So Cal. At any rate, I had them installed while everything was open. It turns out the local Rural Fire Protection District DOES require them. We put sprinklers on top of the roof too. They are just manually turned on. All would have been a nasty thing to have to put in after the place was finished.

The tank is galvanized, 10,000 gallons. Just new and SHINY! It is also required and most of it is dedicated to the RFPD. I don't remember the length of the runs. They could have been shorter but I wanted the tank as high as possible and out of site. I hate the look of those things.

I hope the photos do help when you get to your project. I know how that whole thing works..........rarely enough time to get it all done. Let me know if there's anything else that would help.

MikeA

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16 years 7 months ago #13893 by Oz22
Hello MikeA
Just been reading this thread about early hydraulic systems and the complicated leverage arms. The low pressure was one problem but the low flow of hydraulic oil was the main problem. If the cylinders were mounted direct to the nose the blade speed would have been to slow because of the low flow rate of the early hydraulic pumps, with the linkage the blade speed was increased but the cylinder was also bigger to compensate for the loss of leverage that the linkage created. With todays high flow pumps the cylinder can travel greater distances at higher pressure and can be smaller and directly fitted to the blade. Hope this answers some of your question.
Oz22

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16 years 7 months ago #13900 by Old Magnet
Hi Oz22,
Can't say as I agree with your interpretation.....at 25 gpm for the D2, 37gpm for the D4, 65gpm for the D6 and 100gpm for the D7/8, these were not low flow systems. It's the 1000 psi pressure that was the limitation along with some strange linkages that drives the cylinder sizing .

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