3400 Steering Gear Leak

[SuperSam]

The seal on both steering arms on my 3400 weep oil. The felts are completely soaked and have been that way long before I owned this tractor. The steering gear seems to work properly. But I'm curious to know how much lubricant is in the gearbox yet. I have the Service Repair Shop Manual, but I have not been able to find information on how to check the level of where to add lubricant.
I've been told that if I add some Corn Head Grease to the gearbox that it might stop the leak. I've read the entire chapter on how to overhaul the gearbox. But I'm not sure if I really want to try to tackle that job. Can anyone help me out on trying to solve this problem?

 

[Laneman]

I once used cornhead grease on a leaking posthole
drill, it worked great. I have also read somewhere
here that it works in our steering boxes. On my 3000
there is a fill plug on the left side of the box. I
need to do the same thing on mine, it recently
started leaking. I found the grease at our local
John Deere store for about $4 a tube a few years
ago, probably around $6 by now.