d8 2u hyd

Yes they did....used a front mounted #44 pump....along with cable dozer to run hydraulic blade tilt cylinder and optional hydraulic rippers. Kind of a rare bird to find now😊

Hello I have a front hydraulics set up that a farmer made and later removed from his tractor. I then bought it to use on something else but had a change of plan. It is a bee gee 1000 hydraulic pump that mounts to a plate and has the drive shaft to run off of the front of the pulley. I will dig it out of my garage if you have any use for this type of set up. I payed $100 for it you can have it for that if you like. Thank you and good luck, Paul.

Hi Sandcreek,

I rigged up a hyd system for my 2U to tilt the cable blade. I used the gear driven gen. drive that is over the water pump. So it pumps all the time. It would not be enough flow for a hyd blade or ripper but it works very well to tilt the blade even when dosing. No V belts to worry about. firpitch

Yes lots of the older D8s had hyd. on them and I can,t just remember for sure but OM didn,t the D8s use the 46 hyd. system. I have a 46 book and it shows the 46 hyd. was used on D6-D7-and D8s.

Hi SJ,
If it's the standard hydraulic blade set up you are correct the #46 was used on the early D8's and the D6 & 7. I Probably should have asked what the 2U's owners intentions were. Problem is the #46 is a single circuit system...with big pumps...70 to 100 gpm's and if you wanted additional (smaller flow) hydraulics for blade tilt, rippers or implements, things got messey.
If you had the #25 ccu it was possible to use the #44 front mount hydraulic controls in either 1 or 2 valve configurations and about 40 gpm pumping.

If you had the #24 ccu or #46 front mounted controls, it's possible to mount the #44 to the rear in one or two valve configuration....but it is not live power.

Starting with the 14-15A's Cat also had the #48 hydraulic controls for the same service of rear mounted hydraulics for rippers, tilt and implements at about 33 gpm.

I have a small tile plow made for the three point on a tractor. Sometimes it takes 2 wheeled tractors hooked together to pull it (3 when things get bad). I bought this d8 2u for $500 because I would get it running and keep it. The previous owner did not want it scraped. The d8 spent it's life running a rock crusher, so the undercarrige is in very good condition. It has no hyd or cable units. Will the front hyd off a ht4 loader work? Does any one pics?

The HT4 unit would be a good candidate, it is a two valve 37gpm unit but could be reduced to 25 gpm with a cartridge change out. I haven't found any pictures other than a 14a/15a mounting but I know they got mounted on the 2U.

What is your intended use? The Cat hydraulics of the time were all high volume, low pressure and intended for intermittent use, not continuous loads such as running motors.

If it is just for opening & closing a disc the lower pumping rate would be preferred and you would only need a single valve unit.

I want to pull a tile plow used to put drainage tile in the ground. It has two 6 inch cylinders used to raise and lower plow into the ground

For two six inch cylinders you may want to go with the #46 hydraulic controls same as used on the dozer. I can't seem to find the cylinder size for the 2U but the D6 uses the 70 gpm pump with 5-1/4. in cylinders. Might be a little fast with the 100 gpm pump on the D8.

You would at least be working with a standard configuration system that is quite common.....but you will still have only one hydraulic circuit.