1810 Hydro leak I need your help
 

I am new to the older type Hydro, I have a leak where the speed control shaft come though the outer side of the hydro pump, I guess I am saying that right, I have pictures for you to look at, how and what is the easy way to fix this. I am use to all gear drives, any help would be great. thanks

There's a seal in there, and you have to disassemble the whole hydro to get that shaft out to get to it. It's not a small job.

If you're going to replace it, you'll want to replace your gasket between the hydro and the diff, as well as the o-ring on the front of the hydro while you're at it.

The service manual will guide you through the job.

The right side trunnion seal does not require disassembly of the hydro unit; simply remove the snap ring and washer, pry out the seal, install a new one, and put the washer and snap ring back on.

I will add to the correct reply from Matt, it is also wise to clean the shaft a bit with fine emery paper removing any rust that might be there.
Using a ice pick to start a hole into which a sheet metal screw in inserted, makes a nice prying head to remove the seal with.
It is a relatively easy job unlike the other side which does require hydro disassembly.
Take care to not nick/damage the bore that the seal lives in.

Thanks Guys, I will try and get this done. where would find the number for the seal, thanks

seal on 1810
 

Does anyone know the number for the right side trunnion seal for the 1810 pump or where I could find it, thanks

From cubcadet.com parts list for the 1810: Seal# SU-9008000-6701 $11.69

Thanks, Dwayne

No problem :)

So Matt, you can remove the seal with the shaft in place? The reason I answered as I did is because I was looking into replacing those seals on my 1650 project, and assumed I'd have to get the shafts out to get to the seals...