[jcronk69]

I got my early 316 kohler up and running.
The used transmission out of my 317 parts tractor worked perfect.
I took it out and used it a little today, and after running a few minutes to purge the air out of the hydro unit, I took a break and checked the fluid in the sight tube. It was a little low, so I removed the fill plug, and it burped a bunch of fluid out all over the place. There was significant pressure built up in the differential. I topped off the fluid, but was wondering how these are supposed to vent. I know the 110/112 tractors have a vent on the top of the transmission case, but I saw no such vent anywhere on this one.

 

[vinnie110]

There is supposed to be a vent device, looks like a small fuel filter but has no filter element ant it has a small hole in the side of it, mounted in the high spot of the clear plastic fluid level line. Shows up in the owner's manual pictures or JD Parts diagrams.

 

[jcronk69]

You are exactly right Vinnie!
I replaced the sight tube and "filter"!
I used a standard small engine fuel filter that looked just like the old one that was on it.
I pulled the old one out of the trash and wiped all the dirt off it, sure enough, had a small hole drilled in it.
Just drilled a tiny hole in the new filter, all vented!
Thanks so much for your Help Vinnie!