parked kubota

[wesleyw]

I just got my hands on a B7300 that has been parked for about 3 yrs. Someone just changed all of the fluids (except fuel) before they thought they were going to use it. It is really hard to start, which I figure is the glow plugs (light doesn't come on) and when it is finally running, at high rpms (3000), it bogs down and tries to die as soon as the transmission is engaged (forward or reverse). As if this isn't enough, most of the time it doesn't want to idle back down when the throttle lever is backed off. Could this just be a problem with the governor sticking?

 

[KennyV]

Wesley…
I trust you have fresh fuel in it. Also fresh fuel filter.
You may want to run a lot of diesel conditioner/injector cleaner.
Your problems may be in the injectors, or the injector pumps. Or both.
Glow plugs are easy enough to check, are they getting voltage?
Good luck and welcome to TBN… post back with your findings. KennyV.

 

[ccsial]

Was is stored with the clutch hold down engaged? If not, the clutch may be stuck.

 

[wesleyw]

To tell you the truth, I'm not sure about the fuel. I will drain it and replace it and add some injector cleaner, as soon as I can get it home. Hopefully today...

 

[wesleyw]

No, I'm sure the clutch hold down wasn't engaged. It was my grandfather's tractor and he didn't let anyone mess with it, unless I was discing his garden for him. Anyway, you may be on to something. I was messing with it yesterday and with the throttle in the full open position, it would run right at 3000 rpms, but when I pushed in the clutch it would gain about another 2000 rpms and then go back down to 3000 rpms when I released the clutch. If the clutch is stuck, how can I unstick it?

 

[ccsial]

If it is gaining RPM when you push the clutch in it does not sound like it is stuck. It sounds like something on the transmission side of the clutch is taking a lot of power. I'm no expert on these things. It may have more than one problem. I'm not familiar with the 7300 but if it is an HST a hydraulic valve might be stuck.

 

[wesleyw]

Ok, if we go ahead and suppose that some kind of hydraulic valve is stuck, does it seem likely that trying to go ahead and work it, my "unstick" said valve? The only thing that seems to drag it down (aside from steeping on the forward or reverse pedal) is raising, or lowering the 3 point hitch, with an implement on it, and that isn't nearly as much of a drag as trying to make it move.

 

[wesleyw]

Kenny,
I checked today and the guy did drain all of the fuel and replaced it when he replaced the fuel filter. I'm still going to go ahead add a bottle of injector cleaner to it, especially since I know it has never been done before. Can't hurt, right?

 

[ccsial]

I sounds like either the hydraulics are overloading the engine or the engine is not making power. If you have a mower try engaging the PTO. If that tries to kill the engine I'd say look at injector pump or injectors. Since you mentioned that the engine does not want to idle down it might be something sticky in the injector pump.

 

[wesleyw]

I guess it's looking more and more like a bottle of injector cleaner may be the most likely remedy. This is an HSD with only 70 hrs on it, but since it has been sitting so long, is it very likely that some of the seals in the fuel system may have dried out or dry rotted and is letting air in?

 

[ccsial]

I don't know if the seals would dry up in 3 years but sitting is never good for these things. Was the tractor sitting outside? I'm sure you checked for water in the fuel.

 

[KWentling]

The park brake isn't set or stuck is it?

 

[btolle]

To mention the obvious, have you checked the hydraulic fluid? Look at the fluid and see if it is discolored. If it looks milky it could have gotten water in it while it was stored.

I would try running it for a while and run the 3PH up and down. If you can get it to move drive it around for a while. It might be possible to unstick a stuck valve by using the tractor for a while.

Bill Tolle

 

[wesleyw]

I hope all of you guys don't think I'm being rude by answering all of he last three posts at once but, here goes:
First, I would like to thank everyone who responded to my post and tried to help with my weird problem.
Second, She's up and running like she should be. The problem was that she was only running on two cylinders. Some kind of debris had gotten into the injector pump and was clogging the little orfice in the fitting that the line connected to. After cleaning that out and adding a bottle of injector cleaner, I have already run the whole tank of fuel out of it and put a real serious hurt on some of the yaupons around here. I love it! It's like my riding lawnmower on steroids!!!
THANKS AGAIN EVERYONE

 

[ccsial]

Terrific Wesley! Sure glad that is all it was. I know you'll have a blast with the tractor.

 

[wesleyw]

Yeah, blast may be the right word. Even if it isn't, this sure beats the pants off of trying to bush hog with the old 8N. Now, if I can just break myself from stomping on the clutch every time I want to stop, or change directions...

 

[JimCald]

Some of us only have 2 cylinders! Glad you got it running and I am sure you will have a lot of fun using it.
Jim

 

[LBrown59]

</font><font color="blue" class="small">( Kenny,
I checked today and the guy did drain all of the fuel and replaced it when he replaced the fuel filter. I'm still going to go ahead add a bottle of injector cleaner to it, especially since I know it has never been done before. Can't hurt, right? )</font>
=========
What Guy .
I thought you got it from your grandfather?!

 

[wesleyw]

Not to cause any hard feelings but, If you'll read the posts you will see that I never said that I got it from my grandfather. I said that I got my hands on this tractor and later I said that it was my grandfather's. Grandpa had Parkinsons really bad and couldn't drive the tractor when he bought it in '98 but he would get my uncle and then me to disc up his garden every year ( approx. 75' X 60') and he would plant whatever he wanted and wouldn't let anyone have anything out of the garden, even when he couldn't pick, or use everything he grew. Grandpa was notorious in San Jacinto county for being tight and burying money all over the county because he didn't trust banks. For the past several years he has lived with my mother and then he died in January '05. He had $29,000 in cash hidden in his room. If he could have seen the funeral that bought, he would have died all over again. It may sound like I didn't like my grandpa, but I really did. He was just odd in his own way(s). Anyway, my mother inherited all of his stuff, including the little tractor and she took this long to make up her mind that she really wasn't going to do anything with it. Meanwhile, a couple of my younger sisters have been trying to talk her into letting them have it, so they could play around with it, even though they both have considerably larger tractors, as I have my old 8N. One of my sisters lives next door to my mother and that sister's "significant other" is the "guy" who changed out the fluids and filters because he thought my mother was going to let my sister use the tractor to mow his rental properties. This irritated my mother because, he has 3 or 4 tractors, a trac hoe, a couple of trucks, trailers, and various other equipment. My mother remembered that I have been wanting to restore my old 8N and she figured that I could get more real use out of the Kubota and so she gave it to me.
That should answer any questions anyone might have but, if not, just let me know...
Sorry it was so long but, I wanted to cover all of it. /forums/images/graemlins/wink.gif

 

[ccsial]

Your Grandpa made me think of the movie "Second Hand Lion". If you have not seen it, you should.