Hydro 86 hydraulics/hydro sucking air

Matt Compton · Apr 25, 2014

Good day I own a hydro 86 that seems to be sucking
air causing the hydraulics to be noisy especially
when cold, I am from Canada the tractor is stored
in the barn all winter and not used but periodicly
started and moved outside to keep the batteries
charged etc. On cold days the tractor is very
sluggish to move and sometimes will not move until
the oil starts to warm up. Once warmed up
everything works as it should. but all hydraulics
apear to be affective as the steering is spurtatic
also when cold. You can hear the pumps airating
when engine speed is incresed. Hydro was rebuilt
less then 1000 hours ago by a qualified tech that
has done many of these. Charge pump was replaced
at the same time.
Thanks Again
Matt

Janicholson · Apr 25, 2014

Even a small amount of water in the Hytran will crystallize and the tiny crystals will circulate and be stopped by the filter. This plugs the filter and restricts the flow, cavitating the pump. Draining out H2O from the drain plugs (if it has set unstarted for a week) might get some out, but heating it through real work might be the best solution. If the oil has 1000 hrs on it I would change it. Jim

Allan in NE · Apr 25, 2014

Change the filter and clean the screen. A thousand hours is a heck of a long time ago.

Allan

Allan in NE · Apr 25, 2014

Hydraulic filter.

Allan

Matt Compton · Apr 26, 2014

Thanks for the reply guys but this problem still exists after the filter change. what about the o-rings around the suction manifold? see as how its causing issues on both hyd pumps? if so how hard is it to get at and do you have to drain all the oil? Also i"m sure you guys will scold me but our case dealer is over an hour away and the deere boys are 2 minutes down the road. so we use JD Hy Gard for hydraulic oil............. Could that be the problem too?

erik dekeyser · Apr 27, 2014

Well i think you should be using hytran because that oil is made to be used in IH tractors. I have a hydro and a 686 and i had that problem with noisy hydrolics. What i did was add about 3 extra gallons of hytran to the transmission and the noise goes away. It might not work for you but it works for me and its a cheap fix.

IH fan · Apr 27, 2014

Good chance it is ice, but if it works after it warms up, it could just be the cold oil. How cold is it when this happens? If it's well below 0, the oil is about like molasses and it takes a while to thin out. If it never works right after warming up, get some Hy-Tran. I wouldn't mix the oils, mixing or the wrong oil can cause problems with seals, just drain and re-fill.
We used to test down to -40 and if you don't let them idle until the hydraulics are warmed up, you can have real trouble. We ran some Olivers at -30 in our cold chamber (capable of -60)because the drivers that loaded the tractors in Charles City were revving the engines when cold and ruining new pumps because of cavitation. They changed their policy to starting them and letting them idle a few minutes before driving.

T in NE · Apr 27, 2014

We run the one (JD or CIH) that's cheaper (or more appropriately, less expensive) when the tractors are in need of a fluid change. That's 3 Magnums and 3 Steigers. I wouldn't worry too much as long as you are running a good quality (not store brand) hydraulic/transmission fluid. If the CIH, JD, Pennzoil/Valvoline/Shell oils are half again the price of something else, I wouldn't run the something else in anything but a trailer queen.

Saving $100 on a refill for a $5000 transmission just doesn't seem all the economical.

IH fan · Apr 27, 2014

(quoted from post at 13:12:14 04/27/14) We run the one (JD or CIH) that's cheaper (or more appropriately, less expensive) when the tractors are in need of a fluid change. That's 3 Magnums and 3 Steigers. I wouldn't worry too much as long as you are running a good quality (not store brand) hydraulic/transmission fluid. If the CIH, JD, Pennzoil/Valvoline/Shell oils are half again the price of something else, I wouldn't run the something else in anything but a trailer queen.

Saving $100 on a refill for a $5000 transmission just doesn't seem all the economical.

Brand name does not always mean quality and store brand does not always mean it's not as good. An example is K-Mart used to sell an oil under a store brand name, don't recall right now what that was, but it was made by Amoco and was the exact same oil as Motorcraft (Ford) or Amoco's own brand. In the testing we did in our oil analysis lab, it was one of the better oils made. By the same token, some of the "big name" oil company fluids weren't nearly as good. Amoco, Phillips Trop-Artic and a few others rated very good, but some brand names were worse than oil from the local farm stores.
As for the JD vs. IH oils, it's not necessarily the quality , but the additives being compatible with seals in the components. Just as in transmission fluids, mixing fluids does not work. You wouldn't add or mix Type F with Dexron would you?

Hydro 86 hydraulics/hydro sucking air

Matt Compton

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Janicholson

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Allan in NE

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Allan in NE

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Matt Compton

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erik dekeyser

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IH fan

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T in NE

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IH fan

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