Two weeks ago I pulled a couple of pine trees out with my 2305 through a combination of pulling with a chain and pushing with a blade. Sadly when pushing one of the root balls I drive over a stick and took out a the transmission fan. Ut oh! I had not done much research on replacing the fan but I did recall somewhere seeing that you needed to split the tractor to do so.Needless to say I was scared and didn't want to split it for such a visible part.
After some additional research I found this thread that made drive shaft removal not too bad so that the fan could be accessed.
Removing the shaft was really as simple as a set of snap ring pliers, and two different drifts to knock out a cotter pins, with a little shimmy and shaking to actually get the shaft removed. Really this process didn't take more than 30 min if you have the right tools around.
Now the part why I am happy. This is a new to me tractor, I did the basic service when I got it of oil, filters and lubing it, including the drive shaft u joints with a needle adapter. Once I had the shaft removed I found that the front U joint had seized in one of the two directions of movement. The joint was stuck!
If I had not screwed up the transmission fan I would have never pulled the driveshaft. Now I am replacing two parts a ~$30 fan and a ~$50 u joint. If I would not have broken the fan I would have probably blown the drive shaft and been out the $550 for a complete new shaft....and probably in the middle of mowing season too boot. At least now the tractor has been down for ~2 weeks in a shoulder season where it isn't a problem.
Of note...when I did order the JD joint for my tractor ( LVA803335) it did not come with the associated snap rings...those are separate. I destroyed my snap rings when removing them since the have corroded shaft, itself and they needed to be pulled out by pliers.
To summarize....If you have not greased your u joints on a 2305 regularly, it may be time to pull the shaft and check them for movement before you break the shaft all together. Removal, repair and re installation of the shaft is the the low end of the moderate skills needed. The big call out it so have the parts needed at hand or be sure your dealer has them in stock so you don't find yourself waiting. I needed to stop and wait for part to arrive, which I didn't plan for, but if you have everything the whole R&R should be less than two hours.