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| how does a 9400 compare in capacity to a 6600? Considering replacing the old girl |
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Breckenridge, Michigan | I'd say its closer to a 7720. I have a 9400 and moved into that from a late model 6600 with the N/A 404. The only advice I have for you is stay away from the earlir 9400's like mine with the 359 engine and get one with the 414's. I had crankshaft problems with it and it was a well documented issue. I think they made the engine switch in 1994. Overall I like mine and would never go back to the 6600. |
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68340 | I also have a 9400. A 9400 is about the same as a 9500, except for the cleaning section in the rear. Something like 20 inches shorter than a 9500. Same feeder house, same size cyl. in dia. and width. Not sure about grain tank size. Very comfortable cab. Just keep the incoming cab air filter clean. You might have to clean it more than once per day in soybean dust to keep the a.c. working. I think mine was using about 1.2 gallon of fuel per acre harvested. |
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| They changed to the bigger engine in 1992. Only the 1989 and 1990 models have the 5.9L. The bigger engine surely would be nice, but you will likely pay a premium for it. When I was looking to upgrade from a 7700, the ones with the bigger engine were at least $5-10k more. I got one with the smaller engine. The dealer told me there was a "PIPS" on the crankshafts and should have been fixed along time ago under warrenty. My dealer looked up the serial number and indeed the update had been done.
I really like mine. Only spot where I've run short on power in combining beans in 2 gear on the hydro. Running in the field is fine, but when I get to the ends I like to push the hydro forward to make the turn faster. If you do that turn going uphill with a full tank, the engine will drag right down. Otherwise, no problems with the small engine.
Good combine. I was going 3.7mph on the flat in 200bu corn with a 6 row head and not loosing a kernal and I did not have to worry about plugging elevators and auger like I did with the 7700. Probably could have went quite a bit faster but I can't haul it away that fast so I don't push it. Plus, I did not have to stop for the daily repair sessions like with my 7700. Buying my 9400 made the fall fun for me again.
Edited by sparrell 7/6/2009 08:16
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Beresford SD | Ditto on being equivalent to a 7720 for capacity, but when you look at operating convenience and ease of service the advantage grows. The one we had was a 359 (5.9L) which ran fine, but had the damper pulley replaced early in life. Deere folks will say that is a heckuva engine and I agree, the glitch was an unfortunate big black eye on what was otherwise a good machine. 9400 shares a lot of parts with 9500, availability is still good far as I know. |
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| The 9400's are a awesome replacement for a 7720 or 6620, I agree stay away from the 89-90 models, 91 and newer have the 414cuin. engine, revised feederhouse angle, really only difference between 9400vs. 9500 is mechanical engine, two speed throttle, shorter rear hood and walkers, everthing else is the same as a 9500. |
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Beresford SD | Everything else the same....not quite. Might be trivial to most folks, but the 9500 does have larger feederhouse lift cylinders than the 9400 and a larger hydraulic pump to match. 9400 cylinder drive belt is the extended range version although some early production units got the dual range setup like the bigger machines. The separator clutch on a 9500 has more discs than the 9400 clutch, due to increased power transmission requirements. There might be other items, these are the ones I am aware of. |
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Central IL | Tremendous step up in operator comfort over the 6600 machine.
Ditto the comments on the 359 engine. I know of two machines with the 359 that are on their 3rd crankshaft because of the dampener coming loose. And in both cases mother Deere helped cover some of the costs but the owner paid a sizable amount each time it broke. |
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Leesburg, Ohio | We've had three 94x0 series machines, and never had engine problems. The first one replaced a 7720 and was an '89 model 9400 with the small engine. I would notice that it could use more power when unloading on the go, or in mud with a full tank. Other wise it did just fine, and was a step up from the 7720, especially in operator comfort and ease of use. Neighbor still has it and doing fine with it. Second was a brand new 1994 model 9400 with the bigger engin...sweet machine...traded it on a used '98 9410 and regretted it. Traded that one on a used '03 9550. Lots of power and capacity with 8 row corn head, but have had several hydraulic issues. Just finished wheat last week with no new problems.
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? about JD 9400 combine
