My thoughts on the 990 after 7 months, 50 hours

   / My thoughts on the 990 after 7 months, 50 hours #1  

BGL990

Gold Member
Joined
May 15, 2004
Messages
379
Location
Near Edmonton, Alberta, Canada
Tractor
John Deere 990 4x4
There have been a couple of threads lately where someone has considered the 990 alongside the fancy hydro machines when shopping for a new tractor. Since there will always be someone struggling with a similar decision and I just crossed the 50 hour/first service interval with mine, I thought I would post my impressions of the 990 (with 430 loader).

Keep in mind that while I have sat on the 4000 Ten series and similar machines at the dealer, I have not operated them. I have operated many tractors throughout my life, but they have primarily been antique AG tractors – JD model 70, Ford 9N, Case DC4, and the like, so my reference for comparing the 990 may be somewhat different than someone who has operated primarily newer equipment. In any event, here is what I think of my 990 …

The Tractor Overall:
I have found the tractor to be very easy to drive, maneuverable for it’s size, and comfortable. The controls and pedals are easy to reach and operate, and visibility is pretty good all around. If you come from a history of using “old iron” like me, this thing is a dream to operate. If you have never driven a tractor before and aren’t spoiled by air-ride seats and computer controls, I don’t think you’ll find much to complain about with the 990.

The Size Thing:
Of course there is no such thing as the perfect size of tractor – it depends on what you need it for. Someone used to a garden tractor or 2210 sized machine will think a 990 is pretty big. Most “real” farmers would probably consider it a cute little toy. My uses include quite a bit of front end loader work, light landscaping, breaking up and spreading horse manure in the field, toting trailers around the yard sometimes, lifting and moving stuff (more loader work I guess), pulling the occasional stump, and so on. I do not mow with my 990. For my uses, the 990 is as close to ideal as you are likely to get. There are definitely times that I wish for more loader lift capacity or more weight, but there are also times that a smaller machine would be more convenient, so I think it is a good compromise for me. I think if I could change anything it would be to make the machine heavier. I have all 4 tires filled, plus the loader and a rear blade brings the total weight to something around 5500 lbs. Even with this weight, however, I can spin all 4 tires easily if the rear blade hooks on something, for example. Having said that, I will also say that even before I loaded my tires, I could leave some pretty nasty ruts in the yard after a rain, so extra weight isn’t always a good thing – just most of the time /forums/images/graemlins/smirk.gif

The Loader:
I have always thought that the 990 should have gotten the 460 loader instead of the 430. If you look at the axle load specs, it should be able to handle it, and I think it is close enough in size to the large frame 4000 Ten series tractors for the 460 to be a reasonable match. I have not, however, ever used a 460 loader, so I could be mistaken. As it stands, the 430 loader works well with the 990 - I just wish for more lift capacity sometimes. Without weight on the back, even the 430 can get the back end of the tractor pretty light, so maybe it is just as well I don’t have the 460. I’d probably have the back end off the ground a little too often! One thing I both like and dislike is the loader mounting mechanism (which isn’t unique to the 990 – all JD compact tractors and loaders share the same system I think). While it is a very slick system and putting the loader on and off is very easy, you do need a nice flat spot to do it on. Two or three times I have taken the loader off on uneven ground and had it sort of hang up on it’s mounts when putting it back on. Everything looked OK and seemed to be lined up, but something wasn’t quite right and while lifting the front part of the frame up into it’s proper place, there was a horrendous cracking/breaking noise as something popped into place. /forums/images/graemlins/blush.gif Twice I thought for sure I had broken the cast fingers at the bottom of the mast where they rest on the square support posts. The left mast is in fact loose and I’m sure it is because of this problem – the hydraulics are strong enough to bend things if everything isn’t perfect when putting it back on the tractor. I think some slight modifications where things need to be lined up might help the loader seat itself a little easier.

The Throttle:
Several people have said that the 990’s foot throttle is very sensitive, and I guess it is. When I first got on, I did indeed find the throttle quite sensitive and got into a funny oscillation where I was bouncing the throttle up and down just from the jerkiness of the tractor (which was of course from bouncing the throttle …). After a short time, however, I started getting used to it and now I don’t find it too sensitive at all. It’s just part of the learning curve when operating a new piece of machinery – don’t worry about it.

Gear vs. Hydro:
OK, I know this has been beaten to death a hundred times, and I don’t want to re-ignite that debate again, but the collar shift tranny is probably the biggest fear many people have of the 990. Here are my thoughts on that whole issue (warning – personal opinions to follow ….)
I like gears. I also like hydrostatic transmissions. I am very mechanically inclined and know exactly how each of them work, the potential effects of long term wear, the maintenance involved, etc. I have a hydrostat in my garden tractor for mowing the grass and I love it. I also have a hard to define trust in basic gear transmissions that isn’t quite there with a hydro. I won’t get into which one is better for any given job or which might last longer, but I will share my feelings on some other reasons people give for choosing a hydro over gears.
Some have said that a clutch is harder to operate with arthritic knees, bad ankles, or other medical conditions and I would agree, especially when it’s cold out. I have no particular issues with my legs but after an hour or two of clearing snow in –20 deg. temperatures, my left leg and knee definitely know that a clutch was involved. If you have any physical issues that might make a clutch problematic, then a hydro is no doubt a better choice.
Some say that a hydro is much more productive than a gear transmission. If you actually did some long term timing tests, maybe it would be slightly faster doing loader work with a hydro, but for the average person I very much doubt it would make enough difference to worry about. I’m not sure about other tractors, but on the 990 first and reverse are in line with each other and the shift between the two is very smooth. For loader work where you are going slow anyway, I can clutch, brake to a stop, shift, and be going the other direction literally within a “one-thousand-one” count. Like driving a standard car, after a few hours of using the tractor your shifting becomes so automatic (pardon the pun) that you barely even notice you are doing it. In my opinion more time is spent operating the loader itself (lifting/curling to fill the bucket, raising the bucket out of the pile, etc) than shifting so the tiny difference in productivity should not be an issue for a homeowner looking for an acreage or yard tractor.
Some say that a hydro is easier to use for beginners – the “my wife can drive it too” argument. To that I say your wife probably deserves more credit than that. Almost anyone can drive a standard (even if they are scared to try at first) and tractors are geared so low that there should be plenty of time to react when learning. On hills it is true that just taking your foot off the pedals of a hydro will stop you, but is it really that much harder for a beginner to “push all the pedals on both sides if you get into trouble”? If you or a relative don’t drive a standard then I would suggest looking at it as a minor challenge to overcome and think of how good it will feel to learn a new and very worthwhile skill. Case in point – I recently had a friend from work over and made him drive my tractor. He is a tried and true city slicker and has never driven a tractor or a standard car before, but he wasn’t afraid to try. He jumped on, I quickly told him what to do and 2 minutes later he was digging dirt from a pile with no problem. Don’t let trepidation about that gear shift affect your purchase decision too much.

Well, I’ve probably set a TBN record for the longest post by now, so I’ll wrap it up. I have no regrets buying my 990. It is a good, solid, no frills tractor that should last a lifetime for the average acreage owner. In my opinion the collar shift tranny is almost a non issue. The size, weight, horsepower, your intended use, and cost (most important to me at the time) should dictate your decision regarding the 990. If you have tons of spare cash, buy whatever you want. If not, don’t dismiss the 990 too soon for reasons that probably won’t matter once you own it.
 
   / My thoughts on the 990 after 7 months, 50 hours #2  
Excellent review.

I had tried a 990 and was very pleased,
I wound up with a 4720, because I WANTED it.

The 990 would have been fine too, But I like the bells and whistles and the TURBO... as if I needed that.

It may well be the last tractor I ever buy and so I just went for what I wanted.

Anyhow,,

nice job on the review. 990's rock
 
   / My thoughts on the 990 after 7 months, 50 hours #3  
Brad,

Thank you very much for taking the time to write such an informative post. I’m thinking of buying a 990, and your review will make my decision a lot easier.

Steve
 
   / My thoughts on the 990 after 7 months, 50 hours #4  
Nice job Brad!
This will help a lot of people I'm sure!
Your very right about becoming acclimated to your particular piece of equipment! Practice, practice and before long the training wheels come off! /forums/images/graemlins/wink.gif /forums/images/graemlins/wink.gif
 
   / My thoughts on the 990 after 7 months, 50 hours #5  
Sorry but you started it /forums/images/graemlins/wink.gif
I'm glad you like your gear tractor but reality as I see it is anything you can do with gears I can do with the Hydro, plus I can do some things you can't. I know "some" people that were sorry they got the gears but "none" that were sorry they got the hydro. So to quote Homer Simpson " I made my decision". /forums/images/graemlins/grin.gif
 
   / My thoughts on the 990 after 7 months, 50 hours #6  
</font><font color="blue" class="small">( with the Hydro, plus I can do some things you can't. )</font>

OK, I'll bite, what things can you do with hydro that you can't do with a gear tractor?
 
   / My thoughts on the 990 after 7 months, 50 hours #7  
1. Stop on a hill with 4 wheel braking
2. Inch the tractor with the hydro pedal from ground level
3. Change directions while mowing , blowing , loading faster and safer.
 
   / My thoughts on the 990 after 7 months, 50 hours #8  
</font><font color="blue" class="small">( Sorry but you started it /forums/images/graemlins/wink.gif
I'm glad you like your gear tractor but reality as I see it is anything you can do with gears I can do with the Hydro, plus I can do some things you can't. I know "some" people that were sorry they got the gears but "none" that were sorry they got the hydro. So to quote Homer Simpson " I made my decision". /forums/images/graemlins/grin.gif
)</font>

I don't think there is anything you can do with the hydro that can't be done with gears, and also nothing that can be done with gears that can't be done with a hydro.

In the gear/hydro tractors that give you the tranny option the capabilities of the tractor do not change just because you choose a different tranny option.

There are different reasons people choose different transmissions, and those are individual reasons. Those individual reasons do not make either transmission better than the other for all.

The lamest of all reasonings for choosing the hydro that I have seen is that it is expensive to replace a clutch. A clutch just isn't that hard or expensive to replace. It also isn't done very often. My father-in-law's 1975 Ford 4000 has its original clutch, with about 5,000 hours on it, the tach quit working a decade ago so hours have to be estimated. He also has a 430 Case, about a '66 model I think, that tractor has had the clutch replaced once. I have no idea how many hours the Case has on it, as its non-functioning tach was showing about 3000 hours when I married my wife and began driving the tractor more than twenty years ago. Balancing the cost of the clutch with the thousand dollars up front you are spending extra for the hydro option and you are going to break even, or come out with money ahead, if you do the work yourself.

For me I would rather save the extra costs of the hydro tranny and get a geared tranny, because that is what I am used to and what I like the best. In other words, it is a personal preference. You chose a hydro tranny for your own personal reasons. Neither my nor your personal perferences make it the best choice for everyone.
 
   / My thoughts on the 990 after 7 months, 50 hours #9  
</font><font color="blue" class="small">( 1. Stop on a hill with 4 wheel braking)</font>
In 4 wheel drive a gear tractor does the same thing

</font><font color="blue" class="small">( 2. Inch the tractor with the hydro pedal from ground level )</font>
Not exactly sure why I would ever need to do that /forums/images/graemlins/confused.gif

</font><font color="blue" class="small">( 3. Change directions while mowing , blowing , loading faster and safer. )</font>
Safer /forums/images/graemlins/confused.gif Why ?? how ??
 
   / My thoughts on the 990 after 7 months, 50 hours #10  
<font color="red"> 1. Stop on a hill with 4 wheel braking
</font>

<font color="black"> By their very nature a four wheel drive will have four wheel braking. If you are descending a hill you simply do not push your clutch in and apply the brakes to slow the tractor. I can stop a tractor going up a hill without touching the brakes and using the clutch only. I've taken two wheel drive tractors up some very steep Eastern Kentucky hills with loads on the back of them and been able to stop and start without any problems at all. </font>

<font color="red">2. Inch the tractor with the hydro pedal from ground level. </font>

<font color="black">If you are talking about actuating the forward or reverse movement of the tractor while you are on the ground, that is something that should not be done. The newest tractors have safety switches built into the seats for a reason. BTW, I have seen that done with a clutch, and it is still dangerous and ill-advised. People run over by their own tractors can end up just as dead with either gear or hydro trannys. </font>

<font color="red">3. Change directions while mowing , blowing , loading faster and safer. </font>

<font color="black">I have no problems changing directions quickly, and safely with the gear driven tranny tractors I run. I can generally go forward to reverse almost as quickly as a quick hydro user, and faster than some hydro users. Quicker is definitely not safer, as the safe way to proceed is to come to a complete stop, then reverse, no matter what type of tranny you have, or what operation you are performing. You never know when a child, neighbor, spouse, pet, etc can come up behind you and you don't want to find out they are there the hard way. </font>
 

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