How to D950 Kubota governor disable?

[klondikekid]

I have a D950 3 cylinder Kubota in my Harley diesel build, and the one thing I would like to do is disable the governor, I know some guys have left it as is, and think it's fine, but I would like to have full throttle control. I have looked around a little but I don't find any real good info. Has anyone here done it? I've had the pump out before, and I could probably figure it out, but I would rather do it right once. Let's hear what you think.

[Nanko]

A diesel engine without a working governor does not keep a stable idle speed.
Or it stalls or it runs 2000 rpm or so.
And even with a governor you will have full throttle.
What you can do is increase the max rpm which is factory set on 3000 or 3600 rpm (50 or 60 Hz)
I guess 4000 rpm max is harmless, but maybe somebody else has more reliable figures

[sbrumby]

Think twice, a governor = cruise control, its what petrol bikes dream about and only a few top bikes have.

[klondikekid]

Good points, I heard of guys with the governor saying it worked fine, just took awhile to get used to, Read about a guy with a diesel bike, saying he just basically held full the throttle full on, since it was governed, and just used the gears to choose his speed? I guess I'll find out soon enough, I hope to go for a first ride very soon, just have to finish up some wiring. I Just wasn't sure if there was a tried and true way to set up a diesel governor for varying throttle/load application, over a strictly generator type/set throttle application. Cruise control would be nice, for sure, but most my riding will be 80% around town, where I would like to have full control of throttle, not the governor. Has anyone ever ridden a bike with the governor disconnected??

[coachgeo]

Good points, I heard of guys with the governor saying it worked fine, just took awhile to get used to, Read about a guy with a diesel bike, saying he just basically held full the throttle full on, since it was governed, and just used the gears to choose his speed? I guess I'll find out soon enough, I hope to go for a first ride very soon, just have to finish up some wiring. I Just wasn't sure if there was a tried and true way to set up a diesel governor for varying throttle/load application, over a strictly generator type/set throttle application. Cruise control would be nice, for sure, but most my riding will be 80% around town, where I would like to have full control of throttle, not the governor. Has anyone ever ridden a bike with the governor disconnected??

Some in here have detailed how they redid there governor but these were for 1cy, maybe 2cyl Chinese Clones. Not sure they used the term "Governor" may be why a search of this forum has not come up with anything for you.

Here is some. I'll add threads as I find them:

viewtopic.php?f=21&t=2569

http://www.expeditionportal.com/forum/a ... 91667.html

http://ecomodder.com/forum/showthread.p ... 049-7.html

apparently some have fly weight governor and not ball "Kubota Diesel Super Mini Series

Kubota's engineers work hard to create compact, fuel efficient, and clean exhaust engines.The Super Mini Series is a family of 2-, 3-cylinder , indirect injection liquid-cooled diesel engines with emission levels far below the set standard according to California Air Resource Board (CARB) Utility, Lawn and Garden Equipment (ULGE) regulations. The Super Mini Series represent Kubota's commitment to work towards a more harmonious way to coexist with nature.

Cleaner Emissions - Compared to conventional Indirect Injection and Direct Injection engines in the same class, Kubota's Super MINI Series has attained cleaner exhaust thanks to E-TVCS (Three Vortex Combustion System--Kubota's highly efficient combustion system produces an ideal air/fuel mixture by creating 3 vortexes in the combustion chamber. This results in better cross flow of air and exhaust gases, lower air intake temperature, and improved combustion efficiency.) All engines in this series will meet CARB ULGE regulations.
Low Noise - Noise levels during load and no-load operations are kept to a minimum with Kubota's renowned low-noise diesel engine technology and E-TVCS.
Large Capacity, High Speed Flyweight Governor - Instead of the conventional ball type governor, a large capacity, high speed flyweight governor is used. This ensures stable operation at a low revolution speed, and assures a high torque rise, and Steady State Governor Regulation.
Quick Start Ups - "Quick Glow" system comes as standard equipment to shorten preheating time and quicken engine start up in cold temperature.
Highly Reliable Engine - Based on Kubota's original sturdy design, the engine promises great reliability and long service life with advantages to meet most any application.
Asbestos Free Design - In addition to the excellent features such as clean exhaust and low noise, we have also designed them against asbestos pollution.
Accessories / Options -A full range of accessories / options are available to meet customer's requirements."

http://www.orangetractortalks.com/forum ... php?t=6419 hmmm.... the D950 was also used in bobcats, Kubota tractors etc. so parts may be available. Hard part is searching for part number. Kubota is PITA. You need to come up with a Model tractor and serial number of one that has the type governor you need

[coachgeo]

Started a thread for you over at Orange Tractor to see if anyone has a suggestion see: http://www.orangetractortalks.com/forum ... post122579

[klondikekid]

Thanks, coacheo, spelling is a sore spot with me, no wonder I don't get anywhere sometimes, LOL. thanks for the info, it looks like the adjustment/disconnect could be connected, I'll have to get a look at a Kubota manual and see if I can see a diagram or something.

[coachgeo]

Thanks, coacheo, spelling is a sore spot with me, no wonder I don't get anywhere sometimes, LOL. thanks for the info, it looks like the adjustment/disconnect could be connected, I'll have to get a look at a Kubota manual and see if I can see a diagram or something.

Check out the Orange Tractor thread linked above. There has been a response that looked interesting.

As to "governor" spelling in this case was not an issue. Just my memory; which is usually poor" remembered similar threads on the topic just that they didn't seem to use the word "governor" in their discussion

[coachgeo]

Now that I think about it the D950 may have also been used in diesel RTV and ATV's. check some manuals and part books on those too.

[klondikekid]

Had a look at what was said, and that is exactly the way mine is set up..one screw for low speed and one for high speed, with a throttle lever, between the two, that I modified a bit to connect my throttle cable to, I have set the idle speed, and played with the high speed for revs, then I figured I better wait till I can do road tests, so I can adjust the fuel supply screw as well, since I put a turbo on I'm pretty sure I'll need some more fuel, and it might affect top revs etc, if I'm holding at 1/2 throttle and start going up a steep hill, I'm pretty sure the engine will still hold the same revs, without twisting the throttle any more, with the governor hooked up, Thanks again, coahgeo, I'll have a look around Orange Tractor, looks like the place for Kubota

[pietenpol2002]

Here's a service manual with a nice description of the governor mechanism. Just have to live with the French and German portions of the manual.

http://truckroadservice.com/barth_attac ... Manual.pdf

And if you're needing the parts numbers, go to the Kubota tractor site below and follow these steps.

https://www.kubota.com/part/partsList.aspx

1. Accept and open the terms and conditions
2. Punch in model # B8200 (which uses the D950) and search
3. Any of the 4 options that open use the D950 engine. So just click on one
4. When the separate window opens, click on the engine option in the menu at the left.

[coachgeo]

Here's a service manual with a nice description of the governor mechanism. Just have to live with the French and German portions of the manual.

http://truckroadservice.com/barth_attac ... Manual.pdf

And if you're needing the parts numbers, go to the Kubota tractor site below and follow these steps.

https://www.kubota.com/part/partsList.aspx

1. Accept and open the terms and conditions
2. Punch in model # B8200 (which uses the D950) and search
3. Any of the 4 options that open use the D950 engine. So just click on one
4. When the separate window opens, click on the engine option in the menu at the left.

yes but if Im not mistaken when you go to order a part.. well at least from kubota, after you give them the part number they still want Model number..... which you can lie about such as B8200 in this case, then they also want a serial number off the tractor/ATV etc.... which you can't provide so they can't/wont place the order. May not be the case when you order from others who carry kubota parts. Least that has been my experience when dealing with kubota direct.

[pietenpol2002]

Must be unique to the dealer. The ones in this area are very accommodating. It helps that they carry a number of non-Kubota lines that use Kubota engines. They simply ask what engine it is and then choose a manufacturer that uses that engine. They're not particularly interested in the Kubota tractor model unless you specifically ask for parts unique to that model.

[klondikekid]

Thanks for all the help and info guys, When i first got this engine that's one of the first things I found out is, you can't just ask for d950 engine parts, even with engine ser.# it doesn't make alot of sense, but like what was pointed out is the engines were used in Onan generators to skidsteers, The one good thing about that is they made 3-4 different intake and exhaust manifolds, for all the different applications. I just kept a eye out on flea bay, and got a intake that pointed up instead of away from engine, and a exhaust manifold that exited straight up as well, made the turbo install and plumping a snap, between the turbo and exhaust manifold I used a washer, I think 4" round x 5/8" thick with a hole to match turbo size, then used countersunk bolts to hold it down, and tapped treads for studs to bolt turbo to, ordered the washer thru McMaster Carr, pretty cheap adapter, saved alot of work, the turbo hoses are from flea bay . I think I have a grip on how to disable the governor now, I'll up date this thread for sure after trying it out, hopefully soon. And I will do a build thread, I have pics from the beginning. You can see the washer/adapter if you look at the bottom of the turbo, it's a bit bigger than the exhaust manifold flange and turbo flange.