JD310SG transmission oil level too high after change

[rScotty]

I've got a 2006 JD310SG w/powershift. It's the later serial number run. Pretty much a standard construction package machine with 5000 hrs. and no real problems. Works great.
Today I changed the transmission oil and filter. Let it drain for an hour until empty. Looked like several gallons or more. Spec calls for 4 gallons on an oil and filter change. I put in 3 gallons of Hy Gard and checked it.....Wow! It is way overfull on the dipstick. Running at idle it is about 2" above the full mark on the dipstick. What's going on? I was expecting to have to put in another gallon but now may have to drain one gallon out. I check it in the normal way by inserting the dipstick fully at low idle.
Thanks for any help,
rScotty

 

[tbrooks26]

Not sure on your model, but could there be a lower drainage point? When ever I change any fluids, I warm it up good first, it lets all the fluids drain out easier, but you may already know that. Even still I would think it could hold a few quarts after draining, but I wouldn't think it would still hold a couple gallons

 

[rScotty]

Not sure on your model, but could there be a lower drainage point? When ever I change any fluids, I warm it up good first, it lets all the fluids drain out easier, but you may already know that. Even still I would think it could hold a few quarts after draining, but I wouldn't think it would still hold a couple gallons

IT'S FIXED!
Thanks for the help. I wouldn't have thought it kept that much fluid inside either. There is a note in the manual that for the manual transmission model when you pull the tranny filter and drain it through the drain plug it only drains out 8.5 to 9 quarts out of the 4 gallons - with the remainder left in the system. But this one is a powershift rather than the manual tranny, so my thought was the note didn't apply.
Anyway, it's fixed now. What I did was drained out a gallon. Checked the level and it didn't even show on the dipstick. Then added about a pint at a time checking it as I went.... Slow, but I wasn't about to repeat the messy drain process. After a quart was added it began to show on the stick and by the time I had put 2 quarts back in it was at the full mark at an idle. Took it down the road going through the gears for a mile and ran it hard in all gears, F&R, and 4wd too. No change to the level now.

Then I got to wondering about the dip stick itself. It sure is a complicated piece for a simple dipstick, but it looks box stock. Checked the parts book and it turns out that early and late run 310SGs had the same dipstick but a different dipstick tube. That didn't surprise me. There were lots of changes in the early and later model runs of the 310SG. Little stuff mostly...like the dipstick tube having a different connection to the tranny. Back under the tractor again, and yep, it has the proper dipstick tube. It's all stock.

Sooo.....the manual that came with it is wrong. After a new filter and proper drain with warm oil it took almost exactly 2.5 gallons i.e. 10 quarts to fill back up to the full mark on the dipstick and it seems happy and stable there. Apparently the 4 gallon spec isn't right for mine.

Running fine now. Tomorrow I'll change the hydraulic filter and fluid.
Wonder what we'll find?
thanks, rScotty