PointyHairedBoss
Bronze Member
I'm about to change the hydraulic oil in my new-to-me 2004 Kubota B21TLB for the first time (this is my first tractor). I don't know the condition of the existing fluid so I decided to start fresh as part of the machine's makeover. I have the 2 filters & oil - ready to go.
My question is about draining. Old oil will remain in the cylinders when I drain the system.
Is this anything to worry about?
Should I crack some of the hose connections to allow the oil to drain back to the sump?
Is there a position I should put the cylinders to assist draining (extended or retracted)?
I didn't see any details in the service manual regarding this.
My question is about draining. Old oil will remain in the cylinders when I drain the system.
Is this anything to worry about?
Should I crack some of the hose connections to allow the oil to drain back to the sump?
Is there a position I should put the cylinders to assist draining (extended or retracted)?
I didn't see any details in the service manual regarding this.