hydraulic add-on to d69u

The self contained hydraulics you mention....is that the front mounted #46 pump??? I recently learned that there is/was a rear supply option availabile (never seen one) that places two diverter valves controlled by a single lever in the #46 system. Uses two valves much like the D2/D4 diverter valves but plumbing is a bag of snakes, original application was for the #6 ripper and dozer.

Also in the day there was a #44 2-valve pump front mount option for the D6 that supplied hydraulics to the rear but not applicable to front mounted dozer.

Another option would be a belt drive hydraulic pump off the fan/waterpump belt. Late D6's actually changed to a double belt and tensioner but rarely ever see them either.

If none of the above I think I'd go with the separate engine drive you mention which would give you portability. What pressures/volumes are you wanting to run? Don't cut the hp to close.

We are in the process of gathering/building a trailer ripper and would like to purchase a Kello-built heavy disc. not sure what weight the ripper will come in at but the dics are 6000-10000 lbs depending on the model.

The pump on my 6 is the #46 and have never seen any other ports on it. I was thinking the electric pump for the reason its one less motor to run and maintain. Electric packs I have seen are .9- 1.2 gpm and 2500-3200 PSI. But the gas pump I could remove and use in the back of the truck or remotely to run augers-what not. nothin is decided yet, 3-4 feet of snow around the d6 and its going to sit till more snow melts.

There are no ports involved with the #46 rear hydraulics. It's all done by taping in with diverter valves and hoses. At 66-70 gpm capacity you'd need to be running pretty big cylinder/s.

You might not be able to use the #46 unless you had the large diameter cylinders like OM mentioned. I'm not sure what the pressure setting on the 46 was, but the 44 and 41 were low, maybe 1000 psi. Most modern hydraulics are going to be over 2000 or even higher, so the cylinders will be sized for high pressure unless you change them out.

Any chance of using a block and the towing winch like a CCU to raise the ripper. I know our Rome offset disk had that option, but it was run with a double drum rear CCU.

You might also look at a 12 volt alternator conversion in place of the generator. There are some direct drive conversions available, but sometimes folks gut the existing 6V generator and use the housing and drive gear to mount an accessory shaft which is used to belt drive an alternator, and even AC compressors etc.

Our tractor hydraulics that I have tested are 2500-3200 PSI and all our cylinders have held up fine. If anything the cylinders on the 6 would not hold up to modern hydraulics and not vice-versa.

I had first planned on building the ripper with the winch as the lifting device. But I cannot run the winch on the fly, have to stop and engage the control. That is why I thought to run with hydraulics. Also if the implements are built with hydraulics our tractors could be used to move them around.

Thanks for the input.

Here's another variation. How about using a diverter valve controlled by an electric solenoid to build a circuit to the rear.

Unless your 46 hydraulic unit is in excellent condition you will not be happy with the lifting power on modern ag equipment.I have the set up OM shows,and attempted to us it on ag equipment. The performance of the blade was not terrible with 46 unit I have( would lift the front of the tractor up)it really struggled to get a field cultivator out of the ground.Of coarse it did not help that the control valve had as much if not more ware than the pump did.Another thing these are high volume low pressure ware modern ag is high pressure low volume.
As I had many other used parts available I removed the Cat unit and used a Hydreco pump and control valve. A very clever friend built a joy stick control that is very sweet,since we also added a tilt cylinder to the blade.But after 20 years the Hydreco pump is now very tired as well.
Ray

Our tractor hydraulics that I have tested are 2500-3200 PSI and all our cylinders have held up fine. If anything the cylinders on the 6 would not hold up to modern hydraulics and not vice-versa.

I had first planned on building the ripper with the winch as the lifting device. But I cannot run the winch on the fly, have to stop and engage the control. That is why I thought to run with hydraulics. Also if the implements are built with hydraulics our tractors could be used to move them around.

Thanks for the input.