Oil & Fuel Hydraulic oil and filter change, no lift,air in oil

[dan1948]

My 2500 Yanmar became very slow lifting a 4.5 ' disc. Decided to check filter screen. Oil came out very dark amd filled with metal particles. Screen was not as clogged as I have seen, but, pretty bad. Drained all oil and removed and cleaned screen. Replaced oil with same volume as I removed (+-) used universal fluid from TSC. 3 point will not raise nor will loader, oil on dipstick shows air bubbles. I closed all cylinders on loader but now I don't remember if I lowered the 3 pt. Anyway any input is needed and appreciated. Thanks. Dan

 

[Inspector507]

Dan,
It takes a few cycles of all the cylinders to get rid of the air that may have been introduced.

 

[Reg]

I'd guess you're sucking the air in - somewhere.
Without knowing your particular tractor, if it has a spin on filter that is "sucked through" I'd DOUBLE check that the old gasket came away with the old filter.

 

[dan1948]

Dan,
It takes a few cycles of all the cylinders to get rid of the air that may have been introduced.

How do I get the cylinders to cycle when nothing happens when I attempt to raise 3ph or loader? Dan

 

[dan1948]

I'd guess you're sucking the air in - somewhere.
Without knowing your particular tractor, if it has a spin on filter that is "sucked through" I'd DOUBLE check that the old gasket came away with the old filter.

Tractor has a metal screen that is cleaned and replaced. kinda wish I had a spin-on. Thanks for your reply. Dan

 

[kenmac]

You may have to check the punp. I've changed my fluid several times & had no air problems to deal with

 

[Gary Fowler]

You definitely have a problem. There should not be any metal particles in the hydraulic oil. THose particles have been worn off off something, likely the hydraulic pump.

 

[dan1948]

Turned out to be the shear key on hydraulic pump (.83) With new gasket about 3-4$ total. Plus, I got to practice getting up and down on my creeper. Thanks for the help guys. Dan

 

[Inspector507]

Glad you got it fixed.

 

[Onthesauk]

Good for you! Always nice to hear when it turns out to be $3 or $4 rather then $1,000.