Hydraulic fluid foaming

[spanky2380]

Turned tractor off after mowing and pulled dipstick right away and noticed the hydraulic fluid was foaming. It dissipated in 10 seconds. Is this normal to have this happen? Bx2380.

 

[JonM]

are you using the correct fluid and not some special secret recipe

 

[spanky2380]

are you using the correct fluid and not some special secret recipe

Kubota fluid and filters.

 

[North Idaho Wolfman]

Yes, quite normal.
By the time the fluid gets to the suction the bubbles have dispersed.

 

[spanky2380]

Yes, quite normal.
By the time the fluid gets to the suction the bubbles have dispersed.

Do you mean by the time the fluid gets to the suction is with the tractor running?

 

[GeoHorn]

Do you mean by the time the fluid gets to the suction is with the tractor running?

Yup.

 

[North Idaho Wolfman]

Do you mean by the time the fluid gets to the suction is with the tractor running?

Yep

 

[spanky2380]

Yep

Out of curiosity what causes this to occur?

 

[North Idaho Wolfman]

Out of curiosity what causes this to occur?

Just normal operation of a gear pump, gears in the transmission and the way fluid is moved it entrains air into it.
This is why the suction is on the bottom and why there is so much fluid in the system.

 

[spanky2380]

Just normal operation of a gear pump, gears in the transmission and the way fluid is moved it entrains air into it.
This is why the suction is on the bottom and why there is so much fluid in the system.

Thank you for the explnation. I'm trying to better understand hydrolics and there is a lot to learn.