Hyd fluid screen cleaning, MF1105

I am having trouble with the hydraulics maintaining pressure after running tractor awhile, it is a MF 1105.

I changed the hyd. fluid filter, but that did not seem to help. I am thinking that the screen might be clogged-up.

My questions is this: Can the plate be dropped off from the bottom of the tractor to access the screen without dumping all the hydraulic fluid. It sure looks clean and I really don't want to change 20+ gallons if I don't need to.

Thanks for any help!!

Would you consider the New Holland "multi-gard 134" acceptable to put in a MF1105? that is what I use in my JD and my Ford and I would like to keep the same in all.

Also, I noticed the bolt directly under the rear end yesterday, does this have Hydraulic fluid in it? and then the next question is: will it refill from the main Hyd. fill port or does the rear end have its own fill port?

THEN if the fluid change make NO difference what was the fix to the problems you have encountered.

This tractor seems to have slow hydraulics right from the start but seem to get much slower and weaker the longer it runs. After an hour or two of mowing hay it will barely lift up the disc mower.

If I can get a good idea on what the problem is I definately want to fix it.

As always thanks for your help!