I have a new holland tc 29d with what looks like water in the hydraulic oil.I have had this tractor for about 7 years and this has never happened.I have about 2200 hrs on it. I change the fluid and filters every year. When I drained it this time it is cream colored. I cant figure were it got in the system.What to do?

Hi

Oil test and check if its recurring as may have been a one off,
Regards


Rob S

Is it a hydraulic drive or a gear drive?
If it's a gear drive you could do this: Dump the oil and put in some diesel or kerosene. Then slosh the oil around by driving forward, stopping suddenly and then backwards. Don't move it far, diesel/kerosene doesn't lubricate well, but 10 feet won't hurt. Then run the lift up and down to clear the cylinder,if the trans and hydraulic lift use a common sump. Then drain the diesel/kero. Pour in some lube oil to flush the diesel/kero out and add your oil.
Another way is to use a pump up garden sprayer filled with diesel/kero and use the wand to wash it down inside and out the drain plug.
As for where it came from, check your gear shift levers rubber boots for cracks and replace them. Or it could be from temperature changes and high humidity. Damp air can still seep in.
If it's a hydraulic drive unit, you'll have to drain and refill, maybe a few times.

TAN of hydraulic oil new should be always less than 1.
Our DNR Corp HYD oil68 has TAN of 0.00022 means if it gets mixed with metal working fluid than also it will not contaminate MWF.Hence life of MWF will increase drastically. In case of injection machines this oil will outperform because to reach tan of more than 1 it will take around 10000 hrs.

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Use a high vacuum hydro fluid oil filtration systems to clean/purify it.