Combines JD7800

I am not sure exactly what gears you are referring to, but I have a 7800 I got last year and I was shocked at how harshly it shifts. It has been calibrated, correct JD fluid, etc but it is unbelieveably rough shifting from forward to reverse. `It actually works pretty well under load if you are simply shifting up or down going forward. There are 2 shifts even going forward that are a little rough, believe it is 11-12, and maybe 6-7. I think it is just their nature. Have you had quite a bit of trouble with the electronicsIJ I have had a number of things go wrong on mine, dealer always says "we really don't have much trouble", but I've heard that line before. It is nothing serious, but with the electronics you have to get the dealer and the way they charge today it gets pretty expensive. I am pretty disappointed with the electronic controls.

I know 2 farmers with the same complaints about harsh shifts, dealer could not fix ,1 traded for 7810 and the other sold his

You can get the shifting better but it takes sorting through FEMA valves and getting the calibration done well. The early 8000 series have the same thing, the tens are better and the twenty's are sweet and the tech can do much more to tweak the controlers for the trans. Make sure the calibration is done well, this seems to fix most.

I presume the transmissions are much the same as on my JD 8100 FWA. The book explains that from 6 to 7 and from 12 to 13 there are two hydraulic clutches involves whereas other shifts only involve one. I don't do any real work involving changes from 6 to 7, and 12 to 13 is mostly road work. The only thing I pull in 13 or 14 [there are 16 forward gears on the 8100] is a rolling harrow or prickle chain.

green4ever, depending on your year model, the early 7000's did have aggressive shifts. a accumulator hose can be added to the shift housing for not alot of money. contact your dealer to check dtac case for list of parts and instructions for installation, i did it to mine made alot of difference. hope this helps you

The 7000-series powershifts are pretty much a different animal than the 8000 tractors use. Similar in operation, but quite a bit different in construction and design. The 7000s have 19 forward speeds and seven reverses. But yes, whenever you're dropping one directional clutch and are picking up another the shift tends to be rougher. In the earlier powershifts such as a 4960, 4850 etc, the roughest shifts were always where you were dropping C1 clutch and picking up C2, or vice versa. The same thing is true with your 8100. The electronics add a lot more fine-tuning ability, but can't take all the roughness out of them.