1830 o ring at drive pump leak question

[Guinter810]

Hello everyone.

I have a good condition 1830 and I pulled the hydraulic pump assembly a couple months ago and resealed it.
I can not for the life of me get it to seal at the O-rings at the drive pumps where the control lever attach on the side of the pump. I’m not sure how to attach a pic from messicks

Is this due to a worn pump is there some other issue like over pressure? I have a mechanical background but not much hydraulic background. Is rebuilding the pump something I can do if that’s the issue or should I send it to a local hydraulic shop?

 

[Guinter810]

2nd new O-ring and still leaking.

 

[Guinter810]

No replies but I’ll update : believe the leak is from the O-ring on the swash plate shaft where the control arm mounts listed in the picture. I’ll update again after install

 

[haymaker]

Thanks, Good luck

 

[Guinter810]

UPDATE : the smaller O-ring on the arm for controls at the swash plate fixed the leak. The old Oring was flat and weak.

 

[haymaker]

great ty

 

[Guinter810]

Ran my machine about 3-4 hours and the belly pan is dry! So that small Oring in the above pic #36 fixed my leak. Was leaking mostly after the machine was shut down.

 

[haymaker]

Nice to know. Congrats.