Can anyone identify this pump

I am looking at this rear mount PTO pump that supposedly came off of an 8N with rear back hoe.
Can anyone identify it?
Is the fixture that the pump is mounted on, some sort of RPM increaser? If so it is this piece that I am interested in.
TX


mvphoto15428.gif
 
(quoted from post at 16:35:37 01/24/15) I am looking at this rear mount PTO pump that supposedly came off of an 8N with rear back hoe.
Can anyone identify it?
Is the fixture that the pump is mounted on, some sort of RPM increaser? If so it is this piece that I am interested in.
TX

More likely a mounting adapter of some sort. What does it look like from the flanged end?

TOH
 
It's a planetary speed increaser to get some serious GPM's out of a little pump driven by a 540 RPM PTO.

My Ford Major with a Sherman backhoe has a similar but NOT identical setup.
 
(quoted from post at 19:34:00 01/24/15)
(quoted from post at 16:35:37 01/24/15) I am looking at this rear mount PTO pump that supposedly came off of an 8N with rear back hoe.
Can anyone identify it?
Is the fixture that the pump is mounted on, some sort of RPM increaser? If so it is this piece that I am interested in.
TX

More likely a mounting adapter of some sort. What does it look like from the flanged end?

TOH

Dan this is the only other pict I have. Not very clear. But the female PTO coupler is not in direct line with the pump shaft. Rather it's off center which leads me to think that it may be increasing the PTO rpm output.
Really don't think it is reducing the RPM's since all of the back hoes that I have seen require about 750 rpm to sufficiently pump enough fluid.
For instance the Sherman backhoe pumps require a Sherman combo or step up tranny to increase PTO RPM.
Was hoping to put off splitting the tractor this year to install the Sherman combo I picked up.

I have gone through all the PTO manuals that I could get my hands on but havn't come across this setup.

Btw it is an 1 1/8 which is what my PTO shaft is.


mvphoto15444.jpg
 
(quoted from post at 19:37:30 01/24/15) It's a planetary speed increaser to get some serious GPM's out of a little pump driven by a 540 RPM PTO.

My Ford Major with a Sherman backhoe has a similar but NOT identical setup.

Bob thanks. That was what I was hoping to hear. Just wish I knew how the pump is actually mounted to the planetary gear assy. Meaning is it shaft coupled or is it some type of direct gear drive.
 
(quoted from post at 19:37:30 01/24/15) It's a planetary speed increaser to get some serious GPM's out of a little pump driven by a 540 RPM PTO.

My Ford Major with a Sherman backhoe has a similar but NOT identical setup.

How serious can you get given the size of that pump? A .75 CID pump is only going to give you 5+ GPM @ 2000 RPM.

TOH
 
(quoted from post at 20:05:26 01/24/15)
(quoted from post at 19:37:30 01/24/15) It's a planetary speed increaser to get some serious GPM's out of a little pump driven by a 540 RPM PTO.

My Ford Major with a Sherman backhoe has a similar but NOT identical setup.

Bob thanks. That was what I was hoping to hear. Just wish I knew how the pump is actually mounted to the planetary gear assy. Meaning is it shaft coupled or is it some type of direct gear drive.

One would assume shaft coupled via the gearset - e.g. the sun gear is mounted on the pump input shaft, the annulus (ring gear) is held fixed, and the planet carrier is driven by the PTO. That results in a overdrive ratio of (Na/Ns +1) where Na is the number of teeth on the annulus and Ns is the number of teeth on the sun gear.

TOH

F3T7OUMHINOB4Q3.LARGE.jpg
 

I have seen that gear setup in some old reduction units that were connected to large electrical motors.

Reached out to the fella who is selling it but he has no info at all on it except it was mounted on an 8N. Seems like the planatary unit is dedicated to a certain pump mount and will not accept an after market pump.

I liked the idea of speeding up the rear PTO rpm's.
 
Since you added added the info that the pump is offset, I would GUESS that the drive gear has internal teeth and it's NOT a planetary setup.

<img src = "http://www.beam-wiki.org/w/images/5/5d/Annular_Gear_-_1000px.svg.png">
 
(quoted from post at 12:44:54 01/25/15)
I have seen that gear setup in some old reduction units that were connected to large electrical motors.

Reached out to the fella who is selling it but he has no info at all on it except it was mounted on an 8N. Seems like the planatary unit is dedicated to a certain pump mount and will not accept an after market pump.

I liked the idea of speeding up the rear PTO rpm's.

Aside from the relatively small size of that pump the big downside is it is "permanently" mounted (bolted on) and you lose the use of the PTO for other implements. If you really want a high flow PTO pump a modern 540 RPM pump mounts like any other implement, is easily removed when not needed, and on an N-series can produce hydraulic flow rates on the order of 20+ GPM. Expect to spend $500+ for a new one.....

TOH
 
Hey Grey, Did you get the pump?
See the pop up pistons went for a pretty penny ($137.50). Hope
they work out good for who ever got them.
 

No I decided not to.
Did not know the condition of the pump and the pump mount did not look like a typical setup. So getting a replacement pump if even possible would have probably cost a few hundred more.
 

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