How to Flush Tractor Hydraulic Fluid: Kubota Review  -- Kubota Tractors Discussion Forum and Review How to Flush Tractor Hydraulic Fluid: Kubota Review -- Kubota Tractors Discussion Forum

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 01-02-2012, 09:40 Post: 181855
Stoneyoo



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 How to Flush Tractor Hydraulic Fluid

I was changing fluids in my New 1990's. L2550 kubota the second bucket had some contamination (probably water/condensation)
Site level clouded over tan, dealer recommended draining mix and running kerosene. Warm it up and drain it. Tried it and site level still cloudy and a bunch of crap came out. Lookin for suggestions. Keep rinsing? The dealer also said I should Manuely move loader to get fluid out of piston?
Thank in advance for your help.






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 01-02-2012, 12:06 Post: 181856
greg_g



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 How to Flush Tractor Hydraulic Fluid

Keep rinsing, the stuff's probably clinging to the inner walls above the fill line. The procedure I recommend involves a screen or cheescloth to act as a strainer when you're draining the kero. That permits you to re-use the rinse. I also recommend filling well past the level mark on the dipstick AND exercising the hydraulics while driving around. That will splash the kero up on the sump walls, and clean out the hoses/cylinders/fittings at the same time.

//greg//






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 01-10-2012, 21:27 Post: 181973
billtreat



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 How to Flush Tractor Hydraulic Fluid

brendan Cassy;hydraulic genus said it all just because the oil is new does not mean it is clean, filter it, and change the filter.






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 01-16-2012, 10:40 Post: 182097
Art White



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 How to Flush Tractor Hydraulic Fluid


I don't recommend using kero for this as it has no lubricating ability and will soon take away what is residual from the oil. There is no way to really rinse the sight glass other then removal and cleaning other then eventually if left with good oil it would clear.

We use a cheaper tractor supply oil or any other type oil not to hurt the pocket book to much. It often takes two or three type flushes to remove the bulk of the moisture from the build up. The lower grade oils do not give the same protection as the Kubota oil but it does leave the tractor useable for five to ten hour periods to be able to better purge the whole system of the water. After the drained oil is coming cleaner then go back to a good grade of oil.






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 01-16-2012, 11:32 Post: 182099
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 How to Flush Tractor Hydraulic Fluid

Quote:
Originally Posted by Art White | view 182097
I don't recommend using kero for this as it has no lubricating ability and will soon take away what is residual from the oil.

I haven't found that to be the case, if recommended procedure is followed. I'm almost positive kero is more hygroscopic than "cheap oil". Plus, kero splashes better - which means it will clean sump walls better than cheap oil. Clearly you want to get as much kero out as possible before adding the new hydro. But that's not the end of a competent kero flush. Kero and hydro have different specific gravities, and after a short period of inactivity the kero will settle to the bottom of the sump. At that point you remove the drain plug, let the residual kero out, close up again.

Given that you're in the business Art, perhaps the labor involved doesn't make this method cost-effective. But for the do-it-yourself guys, kero only makes economic sense. Five gallons of kero at the pump = $20. Five gallons of cheap (and thick) TSC oil = $30

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

Thread 181855 Filter by Poster:
Art White 1 | billtreat 1 | greg_g 2 | Stoneyoo 1 |




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