PTO Pump

[SPYDERLK]

My pump has numbers. Main section 4085 and 60121609. P/S section 4028 and 50121509. Nothing visible on the mount flange. It looks much like Brandis. Do you know how to get specs?
larry

 

[MtnViewRanch]

Since you guys love to figure this hydraulic stuff out and Larry figures that I have some sort of a problem with my system, can you tell me what raising time that I should have with my hydraulic self leveling system? There is a lot of fluid that goes to the dump cylinders to keep the bucket level.

Does any of this stuff really matter, I suppose that it might if your sucking air. Does a tenth of a second make that much of a difference, even a full second. Isn't that why stuff is built with certain spec tolerances? There are tolerances set and the machining is done. But every piece may be just a little different and everything still works, just not the same.

Oh well, I've given you guys something else to think about if you want, no big deal either way.

 

[Dougster]

My pump has numbers. Main section 4085 and 60121609. P/S section 4028 and 50121509. Nothing visible on the mount flange. It looks much like Brandis. Do you know how to get specs?
larry

Hi Larry - I gave it my best shot and came up blank. These numbers don't seem to mean anything. I mean... I'm sure they do mean something... but I can see no relation to the pump ordering numbers. All I know for sure is that they are Eaton pumps... as evidenced by both the name and certain external markings... but beyond that I am lost.

BTW, the pump number should contain lots of letters... not just numbers.

Dougster

 

[Dougster]

Since you guys love to figure this hydraulic stuff out and Larry figures that I have some sort of a problem with my system, can you tell me what raising time that I should have with my hydraulic self leveling system? There is a lot of fluid that goes to the dump cylinders to keep the bucket level. Does any of this stuff really matter, I suppose that it might if your sucking air. Does a tenth of a second make that much of a difference, even a full second. Isn't that why stuff is built with certain spec tolerances? There are tolerances set and the machining is done. But every piece may be just a little different and everything still works, just not the same. Oh well, I've given you guys something else to think about if you want, no big deal either way.

It's a mystery Brian... something for us folks with no work to sit around and try to solve!!!

No clue on your self-leveling bucket... other than the fact that I would LOVE to have one myself! Maybe on my next 7520... yes?

Dougster

 

[bindian]

See, I knew you had some sneaky way to make it work... ...but can those braided lines be used on the suction side too?

And if you are satisfied at 2,000 RPM with the 36 inch bucket... running somewhere between 8.1 and 9.1 GPM I figure... imagine how well you will do at full RPM and 11.4 GPM with that 12 inch bucket! Those stumps better run for cover!

Dougster

Our planes' return lines are 1 inch diameter. Planes use them on a permanent basis were flex is needed and a banjo fitting will not work. So they will do if I need them.
I need to reinstall the 12 inch bucket in 7 more hours and see what 2500 rpm does. I will most likely be so excited I will have to shut it down and run to the bathroom. I dug some more sandy, loamy clay today. I accidently dug too deep and pulled up wet clay. The boom wouldn't rise until I hoed the stick in. That wet clay is way heavy. Next sunny day, I will take the side panel off and use two mirrors and look for markings on my pump again.
hugs, Brandi

 

[Dougster]

Our planes' return lines are 1 inch diameter. Planes use them on a permanent basis were flex is needed and a banjo fitting will not work. So they will do if I need them. I need to reinstall the 12 inch bucket in 7 more hours and see what 2500 rpm does. I will most likely be so excited I will have to shut it down and run to the bathroom. I dug some more sandy, loamy clay today. I accidently dug too deep and pulled up wet clay. The boom wouldn't rise until I hoed the stick in. That wet clay is way heavy.
hugs, Brandi

Wet clay is certainly heavy... especially when dealing with a 36" bucket and possibly marginal flow for a 511 for now... but is it all about the weight? Or is there a bucket "suction" problem here too? I sense the latter plays a significant part.

Next sunny day, I will take the side panel off and use two mirrors and look for markings on my pump again.

I wouldn't sweat this too much. Doing my research last night on Larry's numbers, it occurred to me that there may not be any meaningful numbers showing after all. Several possibilities: First, I'm sure they were built in India... Eaton has several plants and builds hydraulic pumps there... and as OEM parts, could have easily been ordered without labels or with temporary, removable labels only (removed during/after assembly). Second, while similar to USA aftermarket Eaton pumps, they do have a few confusing differences... especially in the mounting flange area where the pumps are supposed to be permanently marked. Makes me wonder if the numbers are covered or would have normally been on parts that are not needed or used by Mahindra. Third, there is some question whether the Eaton hydraulic component catalogs available on-line include the pumps manufacturered in India. I cannot seem to link directly to an "Eaton-India" components catalog... very odd.

I have gone through Eaton's obsolete/out-of-date catalogs and Eaton-Vickers catalogs with no real luck beyond a few odd clues. In the end, the most valuable info for figuring out the specs on these pumps might be external dimensions including connection locations. No matter what Mahindra may have ordered or done on the drive end, the pump sections should still be matchable to the standard aftermarket pump sections.

Dougster

 

[SPYDERLK]

MtnView. I dont think you have an suction leak since you reported no jerkiness ever.

Assuming your loader is exactly the same as mine I could probably give you a pretty good number if I assume there is no waste of pressured oil in the equalizing scheme. If you want to report the full amount of travel of your lift cyls and related extension of you (un) curl cyls during a raise, then the tolal fluid use would be calculable - and hence gpmvstime. Doing this with mine would require more work up and down ladder to duplicate bucket angle.
larry

 

[Dougster]

My pump has numbers. Main section 4085 and 60121609. P/S section 4028 and 50121509. Nothing visible on the mount flange. It looks much like Brandis. Do you know how to get specs?
larry

Hi Larry - Those great hi-res pix you just posted clearly show (once magnified) the same number: "50121509" on both pump sections... presumably a serial number or model series number of some sort. But the interesting part is the other set of numbers: "4028" and "4085"! I'll bet anything those numbers relate to either cavity dimensions or displacement... in metric units no doubt... or perhaps a specific pump component number.

Now I've just got to find the "link" to what's offered out there by Eaton.

Dougster

 

[SPYDERLK]

Hi Larry - Those great hi-res pix you just posted clearly show (once magnified) the same number: "50121509" on both pump sections... presumably a serial number or model series number of some sort. But the interesting part is the other set of numbers: "4028" and "4085"! I'll bet anything those numbers relate to either cavity dimensions or displacement... in metric units no doubt... or perhaps a specific pump component number.

Now I've just got to find the "link" to what's offered out there by Eaton.

Dougster

You got em?! i couldnt open them myself so i deleted the post thinking to try again later. The post doesnt show on my display of the thread.

Anyway, I really thot those 5s were 6s on one of the sections. Glad youre on it.

Now i have to learn how to post pictures i can see!
larry

 

[Dougster]

You got em?! i couldnt open them myself so i deleted the post thinking to try again later. The post doesnt show on my display of the thread. Anyway, I really thot those 5s were 6s on one of the sections. Glad youre on it. Now i have to learn how to post pictures i can see!
larry

I'm old and going blind... but computer magnification is a wonderful thing!

Yep... the post itself is gone... but the two pix are in your TBN photo album. I got the notification email (before you deleted your post... we all did) and that's what got me to them. Yes, these are great photos and excellent clues. I will probably have to call Eaton to decode, but that's okay. Heck, maybe I'll even call India directly... or any tech support line... and then I'll ask them to patch me through!

Dougster