What causes hydraulic fluid to foam up?
The causes of foaming are many, but the most common include water contamination, solids contamination, mechanical issues (causing excessive aeration of the fluid), cross contamination of the fluid with the wrong lubricant, contamination of the fluid with grease and too much antifoam additive, either by incorrect …
Why does gear oil get foamy?
Operational Causes If lubricating oil mixes with other lubricants or contaminants such as dust or water, foaming can result along with oil aging, which leads to the formation of polar oil-aging products, an increase in viscosity or filtering out of anti-foam additives by bypass filters.
Why is there so much foam in hydraulic fluid?
The amount of foaming in a fluid depends upon the viscosity of the fluid, the source of the crude oil, the refinement process, and usage. Foam depressants are commonly added to hydraulic fluid to expedite foam breakup and release of dissolved air.
What to do if air gets into your hydraulic fluid?
To troubleshoot air entering the pump through the shaft seal or suction line, squirt oil around the possible leak paths. If the pump momentarily quiets down, then the source of the leak has been found.
What should I do if my oil is foaming?
It is important that degassing techniques are used to prepare the fluid prior to the particle count. If you have a foaming problem, the air bubbles in the fluid would otherwise trigger an abnormally high particle count, and that could lead to attempting an incorrect solution.
When is hydraulic oil foaming up with air bubbles?
My tractor hydraulic oil is foaming up with air bubbles when… My john deere 9410 tractor starts and runs well for about a half hour. I’m pushing corn silage into piles for storing and feeding fairy … read more
The amount of foaming in a fluid depends upon the viscosity of the fluid, the source of the crude oil, the refinement process, and usage. Foam depressants are commonly added to hydraulic fluid to expedite foam breakup and release of dissolved air.
It is important that degassing techniques are used to prepare the fluid prior to the particle count. If you have a foaming problem, the air bubbles in the fluid would otherwise trigger an abnormally high particle count, and that could lead to attempting an incorrect solution.
To troubleshoot air entering the pump through the shaft seal or suction line, squirt oil around the possible leak paths. If the pump momentarily quiets down, then the source of the leak has been found.
My tractor hydraulic oil is foaming up with air bubbles when… My john deere 9410 tractor starts and runs well for about a half hour. I’m pushing corn silage into piles for storing and feeding fairy … read more