D2 3J676U HELP!!!

I just aquired this 1941 D2 3J. The hydraulic pump is mounted to the L/H fender......What drives this pump?

You can see the blade control sitting on top of the fender in this photo

The blade control and hydro pump mounted to the fender here along with hydraulic tank.

the pump is on the lower left side in the last picture.

PTO unit on the rear? Open hole, since this appears to be a top seat machine (cruiser) the PTO assembly is missing and that would be the key to driving the pump if it is mounted below the left fender. Your photos do not show the pump or rear of the tractor. What a "battle" to work the rope for the starting engine. I do not recall a fuel tank extending that far to the rear nor on the right side. They were bad enough before adding the "attachments". -- good luck --- cts

I cannot tell from the photos, but it almost does look like it ran off of a PTO and drive chain? A person could modify it and have live hydraulics running from the front right where the generator used to be. My former 5J was set up as so, and it was fairly tidy. For a moment, I thought it ran off of an old LePlant Choate pump at the end of the machine, but you have one at seat level?

Not to knock your project, but that looks like you will never have to see your wife much!

What are the details of your acquisition? Thanks for sharing.

I sure hope the modifications all fit the operator of that dozer. Is my mind not seeing the picture clearly? The blade control is on the left side? That just boggles my mind..........................run the blade and clutch with the same hand. Went to a lot of trouble to move the fuel tank rather than put the hydraulics on the left. But as long as the operator felt it fit his needs better OK.

I once tried driving a IH TD 18 of a guy that was much Shorter than I. He had modified the brake petals to fit his shorter legs. Very glad it was only an hour to do what was needed. But understand the idea having raised the seat about 3 inches on several of my old 9u D6's. Levers need to be where your hand natural finds it. Not off someplace that was just handy because it had a hole to put a bolt through.

Back story on the machine..... Prior owner bought this for parts was a running unit but blade was chained up and had a winch on the rear. 2 years ago he threw a track on the R/H side and couldn't get it back on so he parked it and removed the winch for his other machine, never to mess with this again, he gave me the PTO to close up the rear end and when we loaded this on my trailer and tried to drop the blade for my 700 mile trip the blad wouldnt move, even when we tried to push it down with a skid steer. I am missing the PTO engaugement cog from the transmission shaft to the PTO unit and there is nothing off the face of the hydraulic pump to indicate what/how it was powered. Should I remove all this blade and hydaulic stuff and source out a different blade and hydro unit for it? More pictures to follow in a couple hours. Thanks for all your inputs!!!

Many dozers of this vintage have the pump up front of the radiator with a small drive shaft that runs through the crank hole in the radiator and connected to the front pulley with some kind of drive coupling arrangement. The early J series D2 also had a double grove front pulley one pulley ran the water pump and fan and the other pulley ran the generator. That pulley could be used for a hydraulic pump as well. The only other option would have been a winch that had some kind of hydraulic pump drive option / modification.

Hi Thorin, some winches had an auxiliary drive on the left and since your tractor had a winch previously, maybe you could ask the previous owner if he still has the winch? By the way, do you still have the long track frames you bought (you and I traded private messages)? I'm very interested.

So the prior owner used this machine? Or it was just mobile under its own power. I ask because the flat bar stock on the left side (but is only connected on one end on the right side) looks like it locks the blade on that position. Which might not be true, as a lot is not showing in the pictures.

The dozer blade does not care where the hydraulic power comes from, just that there is pressure going to the ram. So no reason to look for a different dozer.

I have a question about what we are seeing in the pictures of the left side. It is below what I take for part of the hydraulic tank on the rear. It looks as if it could an electric motor with a small pump direct coupled to it. Which is not making any sense to me, but whats new with me being confused.

In my experience putting the pump up front as CR was explaining is the best option. If the engine is running, you have hydraulic power. Very desirable for blade operation, not near as important for lifting towed tools. That being the reason so many ag tractors have the rear mounted pumps. Only making power when the clutch is engaged.

He said he used it for skidding logs, not sure exactly how he was doing it as hes abit eccentric now( 76+ yrs old) . That flat bar is part of the blade pivot (lift lower stabilize system it pivots at both ends and has greese zergs)

Neil...yes i do pictures to follow...

Thanks Thorin. I'll private message you and you can send the pictures to my email - they don't appear on the forum for some reason