3-Point Hitch New Holland TC45DA hydraulics issue

[VOL54]

Good morning,

I have a New Holland TC45DA with a hydraulic leak somewhere. Both the bucket and the rear 3 point hitch will lose pressure and lower over time. Recently, as a test, I left the bucket up approximately 18 inches at night and next morning, bucket was on floor. Also after completing mowing, I left the mower up with engine off to clean mower. The entire time I was cleaning, I could hear the mower popping and could see the mower gradually dropping. I have done a visual inspection of the entire tractor and find no evidence of a hydraulic fluid leak anywhere. Does anyone have any ideas as to what is going on and what to do to fix it?

Thanks.

 

[Greenland South]

I have the same tractor. My hydraulics also bleed down over time. I have looked for a leak for three years, haven't found one yet. Regarding your other question you posted, my dealer suggested the same course of action. I'm changing my filters spring and fall.

 

[STx]

My tractor bleeds down also, I think it's the cylinders themselves leaking fluid past the o-rings and internal seals. Rebuilding them would probably solve the problem, it doesn't bother me enough yet that I've wanted to tear into it. My 3 point bleeds down fast (in under a minute), the loader takes longer but having something heavy on it definitely speeds it up.

 

[Greenland South]

The cylinder thing makes sense on the loader arms. My 3 point does not move, even with the flail mower on it.

 

[VOL54]

Thanks guys for the quick replies. I have a 1300 lb. Woods finishing mower and I can stand back and watch it drop a fraction about every 10 seconds. I will be removing the mower blades for sharpening shortly. Of course I will have the mower deck blocked, but I would still feel better if the hydraulics were in better shape.