Too Much Hydro Oil?: Kubota Review  -- Kubota Tractors Discussion Forum and Review Too Much Hydro Oil?: Kubota Review -- Kubota Tractors Discussion Forum

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 07-19-2004, 10:17 Post: 91305
beagle

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 Too Much Hydro Oil?

Finished the 50hr service on my 7800 last week. Added the amount of hydro oil recommended along with all the filter changes. The dipstick reads overfull by about 2". Is this cause for concern and should some oil be drained? I have put a couple hours on the tractor since the service, but the dipstick still reads high. Drain some? Please advise.






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 07-19-2004, 11:44 Post: 91309
AnnBrush



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 Too Much Hydro Oil?

Drain some. Filter specs (and capacities) change over time and filling volumes are approximate. Also the last drain may not have removed all of the oil (some cannot be removed) so residual oil will now be occupying some of the stated volume.






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 07-19-2004, 11:50 Post: 91311
beagle

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 Too Much Hydro Oil?

Thanks, pretty much what I thought, but the dipstick reading is somewhat ambiguous depending on the position of hydraulic components when it's checked. Draining seems like the right thing to do.






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 07-19-2004, 14:14 Post: 91327
Murf

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 Too Much Hydro Oil?

Beagle, are you sure you don't have some big airlock somewhere in the system taking up a bunch of space?

It would be a shame to drain some back out only to have the air work it's way into the reservoir and then have to pour it back in again.

Best of luck.






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 07-19-2004, 14:54 Post: 91332
beagle

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 Too Much Hydro Oil?

I had the same thought when I checked the level after the service, so I decided to run it a for a few hours and see if it worked it's way out. I have used the 3-point, rear remotes, and the FEL since the service, still reads high. I am hesitant to drain any fluid, but not sure the risks to the system for being overfilled. I re-checked the amount drained, and come up a lttle over a couple quarts short. I attributed that to filter retention. From using the tractor, it seems I have good exhaust fluid flow based on the performance of the hydraulics. Are there other risks to being overfilled I haven't thought of.






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 07-19-2004, 17:26 Post: 91351
beagle

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 Too Much Hydro Oil?

Can too much fluid cause excessive foaming from the exhaust fluid flow?






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 07-20-2004, 06:17 Post: 91411
jarndt

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 Too Much Hydro Oil?

You might blow a seal or have some other form of leakage from overfilling. The best policy is to relax all of the hydraulics and make sure you are on a TOTALLY level surface when adding hydro oil. If you put too much in, use a turkey baster to suck some back out. A little fluid makes a huge difference on the dipstick. Then run the machine and cycle all the hydro circuits. Bring it back into the garage and recheck the oil level. That should be it, except for an occational spot check between service intervals.






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 07-20-2004, 07:34 Post: 91418
beagle

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 Too Much Hydro Oil?

Getting a little concerned. Drained about a pint last night from the mid pto plug. Ran the tractor, cycled all the hydraulics, did a little loader work, then re-checked. Still read high on the dip-stick. I know I added 3.8 gallons of fluid when I serviced. Any thoughts, keep draining?

Any thoughts would be helpful. I may even break down and call the dealer.






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 07-20-2004, 08:03 Post: 91420
Murf

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 Too Much Hydro Oil?

I don't suppose you did something silly like marking the point the fluid came to on the dipstick so you could see how much of an effect that pint had did you? I know I always remember to do that, usually about 5 minutes late mind you, but I always remeber, Laughing out loud.

Every machine is a little different but generally the only real hazard if it is a little overfull is that the fluid reaches a spinning gear or something which cause the fluid to foam up bad, this can of course cause cavitation and other air entrainment problems.

On the other side of the coin there is some logic to the arguement that slightly over-full is just fine since you never work the machine with the FEL and 3PTH all the way down anyways. FWIW, my dealer suggests checking the fluid with the FEL & 3PTH in the 'normal operating position' that way there is the proper amount of fluid in the machine when it's working, and the more fluid, the more cooling capacity. Mind you I think my machines work a little harder than the average too.

Best of luck.






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 07-20-2004, 08:53 Post: 91430
beagle

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 Too Much Hydro Oil?

Murf, I've been thinking along those lines too, especially since I added the rear remotes. Silly question, should the tractor be running when the level is checked, or doesn't it make a difference? I am tempted to check the level with the tractor idling and see where I am at. I will cetainly try it in the operating position as you suggest. The last tractor was always checked with everything in the retacted position, since the allowance was built into the fluid level. What about checking with the tractor running? Any thoughts there?






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Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

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