foaming hyd fluid

MoMac · Mar 17, 2014

Hello. Has anyone had the problem with hyd. oil foaming so bad on a VAC that it pumps the oil out of the sump vent? I'm thinking it's sucking in air somewhere. Thanks, Mike.

Bill Tankersley · Mar 17, 2014

Mike
I have the same problem. Let me know if you get a fix.

maxwell99 · Mar 17, 2014

http://www.machinerylubrication.com/Read/1765/foaming-in-oil

good article on hyd fluid foaming, apparently it is a common problem and can have many causes.

when you solved the problem, please post what steps solved the problem.

1031D · Mar 17, 2014

Part of the problem is just cheap oil. The higher grade brands such as Hytrans and HyGuard have anti-foaming agents in them to keep this from happening. Our local TSC has some generic hydraulic oil that's usually $40 a bucket but doesn't have a lot of the additives to prevent foaming and wear. One year the farm budget was shot and I used TSC universal hydraulic fluid and it foamed out the shifter on a couple tractors I had.

One other thing is moisture. It will make the oil milky and cause it to foam up much like a whisk does in the kitchen. Beat the oil enough with the gears and it'll turn into a big white foamy mess.

foaming hyd fluid

MoMac

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Bill Tankersley

New User

maxwell99

Well-known Member

1031D

Well-known Member

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