Hydraulic oil foam - is it normal?

[powerscol]

Just a question. After hooking up my hoses to the front and installing the grapple, everything worked fine once I got fluid pumped through everything. But when I disconnected the grapple, there was a small bit of pressure left and the hydraulic oil that leaked out was foamy - lots of small bubbles. It cleared up quickly when leaking out. Is this normal?

Just wondering.

Next time I will remember to operate all the levers when off to bleed down.

 

[davesl708]

Probably foamed from the pressure forcing it out. If it is foamy when you relieve pressure then it could be a leak is letting air in the lines.

 

[Mace Canute]

Air Contamination of Hydraulic Fluid