Bad Hydraulic Pump???

[ba.edwards-HT]

I think that my hydraulic pump is consuming itself. My 2610 has 56hrs on the meter and in the last 10 hrs or so I have been experiencing a lack of performance; the front bucket basically will not pick up more than maybe 10 lbs (my guess). I decided to change the Hyd Fluid this morning and after letting it drain for a while I noticed small particulates on the internal filter. since there is a small amount that remains within the "drainpan" I inserted a small magnet and moved it around the remaining fluid and boy was it covered with large, curly-Q metal shavings. Large meaning that if i straightened them out they would range between 1/4 and 3/8 inch.

Once I find the culprit (I think it is the Hyd pump) I still need to flush the entire system to remove any large shavings that may still be floating around in the system.

Does anyone have any thoughts or similar experiences???

Brian

 

[winston-HT]

Bottom line to me is metal shavings in transmission case and possibly in hydraulic lines cannot be tolerated. There is a post just down from here from GAPAWN concerning flushing out his hydraulic system. Good reading if you haven't and you will see different opinions. Here is my opinion on your situation. 1. If you are right and pump is bad (sounds likely to me) I would disconnect hydraulic lines as much as possible to facilitate blowing thru them. This may be a messy situation but with a little thought surely you could make a way to blow into a container with a lid on or something to catch most of the flushed material. Those metal shavings could only get to your case thru these lines if it is the pump. Once this process was complete I would fill the transmission case with diesel, drain out, take long air nozzle and blow around in case as much as is possible, thinking of going thru the dipstick hole. I would then run a quart or two of your fluid of choice thru there. Then I would intall new filter, clean strainer, fluid of choice and go for it. "If" it's not your pump the whole senerio changes! Don Meredith once told Howard Cosell "if ifs and buts were candy and nuts, we'd all have a Merry Christmas". You guys are probably to young to remember those two. <E>:lol:</E>

 

[Carey-HT]

Blah Blah blah!!! With that size and amount of metal don't waste you time trying to make it work. If 10 pounds is all it will lift then the pump Most likely is already Gone and you will just be wasting your time. If you go pouring Diesel ( Bad Advice opinions are like a holes) into Your hydrolic system you are going to Screw something else up. <E>:?</E> Change your Hyd. fluid and Filter and if that does not help then start to disassemble it and most of the Metal debris wil come out when you drain and repair it <E>:roll:</E>

 

[GaPawn-HT]

I'm certainly NO guru, but if you do decide to disconnect your hydraulic lines, let me pass along a tidbit that I learned in college about 30 years ago. Yeah, that makes me way old enough to remember Meredith &amp; Cosell! <E>:lol:</E>

I took a course in "Hydraulics and Pneumatics" that was 90% hands-on lab work stuff. On the first day we were warned by the professor to always wear old clothes to class because the question was WHEN, not IF, we would disconnect a line with a load on it and spray ourselves plus a few nearby buddies with hydraulic fluid! I made it halfway thru the quarter before I took a bath in fluid, and I guarantee you that not a single one of us didn't screw up at least once before we got out of that class.

Make sure that your front end loader bucket and three point hitch are lowered all the way to the ground and/or supported before you start pulling those hoses! Hydraulic fluid can squirt a LONG way, and make a Major mess if you disconnect a hose that has a load on it! Been there, done that, more than once! <E>:roll:</E>

I had planned to change my hydraulic fluid/wannabe-milkshake this weekend, but I forgot it was Easter, so I'll have to update ya'll on that later.....

Good luck getting to the bottom of your problem, are you sure you didn't just have a low fluid situation or blocked filter? It may be wishful thinking, but those are very likely answers, and the shavings could possibly be left over from the manufacturing process? Or even from the gears in your tranny? It's a long shot, but if your filter is working properly, none of the particles should have entered the system (ie: lines) unless the particles came directly from your pump.

Oh, and for what it's worth, I have decided to drain the white, water contaminated fluid, clean the screen, then refill with hydraulic fluid, run it for a few hours, then see if I still have a milkshake mess. If so, I'll repeat the process. I decided 2+ gallons of diesel is ~$5~ vs. ~$12~ for the 303 hydraulic fluid. It just ain't worth screwing up a bunch of seals trying to save $7 by flushing the system with diesel. Yeah, I know, I often come up with some pretty dumb ways to save money! <E>:wink:</E>

 

[winston-HT]

I don't really think diesel will screw up these oil seals. I'm not sure but I think the o-rings and seals used here are most likely buna-n (nitrile) material. I would guess the fuel bowl o-ring to be nitrile. Aaron might know what material the seals are. I just know nitrile is most commonly used in these areas beacause of cost and compatibility with petroleum products including diesel.

 

[runningbird-HT]

only 56 hours on a 2610? i'd be asking the dealer to fix this for free.

 

[Carey-HT]

Organic seals on a 75-80 Model tractor I doubt it. As for the fuel bowl that is the only seal I have had to replace when I changed my filter and tried to reuse it. I change both at the same time now it's happened twice <E>:?</E>

 

[ba.edwards-HT]

Guys,

I am still leaning towards the hydraulic pump as opposed to the tranny. I have no problems with any of the drive gears Creeper through 4th... In fact right now the only thing I can use is the back hoe, since it is a separate system. I can use the tractor to pull around a trailer for hay rides....if i had a trailer, and hay and grand kids.... <E>:lol:</E>

Brian

 

[Norm-HT]

It's not likely those particles came from the pump. That means they would have to travel through the loader, pto, and the entire system to get back to the screen, which is the last stop before the pump.

 

[Carey-HT]

Still Leaning that way myself. Back to clean you Screen and Hyd. fluid and go from there. I doubt that much metal came from the pump also but could be possible.

Carey

 

[ba.edwards-HT]

Well, it will be another couple of weeks before I can get to it, but I can drain the fresh fluid. I think that i will take the time to purge the hydraulic lines as well. I have ordered the pump, seals, etc....

Should there be any more symptoms i need to keep on the look out for???

Brian

 

[alan-HT]

If you recently bought this sitting on a lot as refurbished with zero hours, maybe somebody had spiked the reservoir with metal shavings.

 

[ba.edwards-HT]

Yep it was the pump. It was just plain wore out.

I swapped it out with a new one from Hoye. I replaced the RTV gasket that was leaking like a sieve. I also, as par for the course, blew out the front bucket lines with air just in case.

Got it all put back together today and it is working like a champ. I looked at the hydraulic pump and i believe that it just has a serious amount of hours on it. I did notice that after I cleaned it up that the pump had a coat of OD green paint and not the gray that the motor has been painted.

 

[winston-HT]

Glad everthing worked out for you, good luck. <E></E>

 

[alan-HT]

Sounds like in its former life somebody ran the pump dry and installed a low-quality rebuild.