641 no lift power, tilt works fine

[mkash002]

Hi there, I recently bought an old bobcat 641 for $1000. It had been sitting for at least 10'yrs. So far, I've : -rebuilt lift cylinders -rebuilt tilt cylinder - repaired leak in oil cooler - replaced 1 dry rotted hydraulic line . The bobcat drives fine ( a little jerky). The tilt seems to work fine and can raise the front wheels off of the ground. The lift, however, has very little power. It can barely lift the bucket and is very slow I tried adjusting the relief valve , but no luck Any help would be much appreciated

 

[SkidRoe]

Are the aux hydraulics locked on? Try pulling the right stick all the way to the left and then let it return to center.
Cheers - SR

 

[mkash002]

Are the aux hydraulics locked on? Try pulling the right stick all the way to the left and then let it return to center.
Cheers - SR

Let me give that a try. thanks!

 

[mkash002]

Let me give that a try. thanks!

so tried seeing if the aux hydraulics were on. No difference was noted. One thing that I have noticed is that the more I try to make it lift, the harder it becomes. Could this be an issue with the filter on the port block?