1925 hyd return line leak

patclem · Jan 1, 2023

I’ve changed #11 twice and I can’t get it to stop leaking. Very little is leaking through the weep hole. Any advice is appreciated before I start spitting the tractor.

BTW if anyone needs a page photo out of any of the service manuals, I have them all for the 1530/1630/1725/1925, etc.

kirkawilson · Jan 1, 2023

I have never succeeded, on first try, with replacing a worn tractor hydraulic o-ring with a new one that 'looks' just like the worn one. I get multiple sizes and thickness of o-rings that are close to the worn size and try each of them until it stops leaking.

TractorTech · Jan 2, 2023

Are you sure the line isn't bent slightly?

patclem · Jan 11, 2023

Sorry for the delayed visit back here. The hydraulic line is not perfectly positioned. I've tried to bend it to relieve any strain on it. Do you have any tips on how to get it perfect?

patclem · Jan 11, 2023

kirkawilson said:
I have never succeeded, on first try, with replacing a worn tractor hydraulic o-ring

Thanks for that. The first time I used the genuine $9 o-ring from NH. The second try I found it's a P16? or something like that. I don't have the size handy. I think I have the right size.

TractorTech · Jan 11, 2023

patclem said:
Sorry for the delayed visit back here. The hydraulic line is not perfectly positioned. I've tried to bend it to relieve any strain on it. Do you have any tips on how to get it perfect?

Remove the end with the banjo bolt and try with Channel locks or another wrench to bend until it fits squarely on both ends. You could try some heat towards the middle to get it to bend easier. Heat at the fittings might loosen up the solder/braze joint.

patclem · Jan 11, 2023

One last question if you don't mind me asking, which way does the fluid flow? Could the filter be stopped up and causing back pressure at this fitting (if it flows towards the filter)? I haven't changed the filter since all this started.