1680 hydro replacement

What ever was pumped by the pump went thru the motor.
Been working on CNH since 1985 and JD the 10 years before that.
You will be money and time ahead to replace both.

Amax

I agree that it would be better to replace them both as a new hydro is no good with a worn out motor. If the hydro is shot it's likely that the motor is not far behind. I have replaced the hydro on my 1660 without replacing the motor but that was because the hydro was fine, only the input shaft was stripped out. You may get by by only replacing the hydro, but it is very likely that it will cost you more down the road because if the motor goes out it will likely take the hydro with it. And since it's a HEAVY son of a gun, I would only want to replace it once

If you have had ether a hydro pump or motor failur both should atleast be striped, inspected, cleand and re sealed as they are a closed loop system that only bleeds of leakage and cooling oil to case drain so if ether the pump or the motor has failed/made metal it will of been past to the other component. A inspection of the case drain fillter should give a indication of what has failed (brass of seal faces and slipers, hard steel of pistons and bores, aluminum off housings)and how much metal has been made.

Madsnake

Definitely want to change both the pump and the motor. Can cost you big time if you have to do it again while harvesting. You need to flush all of the lines also. If there are any shavings they may be in those lines also.

3300 hrs may wanna have it rebuilt or somthin

we ( my dad and i) rebuilt the box on our 1440 the gears just stripped in it and we bought used ones from a wrecker rebuilt it over the winter and put it back together in the summer and sold it that year the combine only had 2800 hrs on it

still runs strong and no problems over the 2 years

a matching set for 3 g`s is a sweet deal I`m sure that includes your core exchange . go for it and get whatever guarantee he`ll give you

there is a hydro tranny place out of tupelo, mississippi that quoted me 2500 and that was upgrading the pump volume 50% and the motor 25% so i could get more torque and speed.

Farminflyboy, what do they do to give you more hydro capacity? Do they life flow and/or pressures? Maybe what our 2588 needs? We have a real issue with ground speed losses.
Do you have a web address for the set up that will hone injectors for more power? would work on our mx180 a treat I think.

Madsnake

On your 2588 you might just need to have the clutch pedal shimmed, i've been told that will fix your problem 99.9% of the time. But if you want more power and torque i talked to http://www.hydrostatic-transmission.net/ . I asked for a 50% increase in displacement for the pump and 25% for the motor, which in combination should give more speed and power. The company that i had do my injectors was http://www.dynomitediesel.com/ . You can find more info on the process at http://www.gethoned.com/diesel.php . I settle on dynomite because extrude wanted just the nozzles, and dynomite takes the whole injector, disassembles, hones, reassembles, flow tests and pop off tests. For the $13 more per injector i think it saves money in the long run to go with dynomite. Your only taking $50 for them anyway. Their sight has a limited amount of what they do, you have to call for the more unique things like 8.3l cummins.

What did it cost you to get this done?

didn't have it done yet but they quoted $2500

What is wrong with the hydro pump? Usually around that many hours the splines tend to wear out. If this is what happened you can replace the shaft with parts from your local dealer.

Our 08 2588 gets worse every year for hydraulic traction. 2000 engine hours. The mechanic has shimmed up the clutch relief a few times with minimal results. It also runs on the warm side of normal. It runs beside an 06 2388 with 3000 hours which is a strong traction machine that runs considerably cooler. Other than that they are basically sister machines. 2588 has been sent to the dealer for a once over and guessing a traction system change. It will be interesting to see what they come up with.

schraefel said:

Our 08 2588 gets worse every year for hydraulic traction. 2000 engine hours. The mechanic has shimmed up the clutch relief a few times with minimal results. It also runs on the warm side of normal. It runs beside an 06 2388 with 3000 hours which is a strong traction machine that runs considerably cooler. Other than that they are basically sister machines. 2588 has been sent to the dealer for a once over and guessing a traction system change. It will be interesting to see what they come up with.

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One of the things that I would do on this machine would be to take the filters off and take them apart and look for metal fragments as it sounds like it has a hydro problem and something is wearing compared to the other machine . And oil test would also show some irregularities .