L3010 lugs down

[JFP]

I am looking for some input My L3010 lugs down really easy, I understand how to run a hydro , I know its not a fuel petal. this will happen in mid range and even in low. I have checked or replaced all the normal filters , boost pump ran fuel cleaner , blue out the fuel lines. I even had it checked with a local mechanic who doesn't like hydro's and thinks the engine is just to small. he did boost the fuel up and claims its up to rating at the pto But that is not working the hydo at the same time right ? I really find it hard to believe my b9200 can outwork this all to hell ! I am convinced its some thing with the fuel its fine until you try to back up with the wheels turned to hard or slight incline or soft ground as soon as you need it to make HP it drops the rpm bad,. Could this be bad injectors is there a way to test the pressure or maybe a bad hydo pump? any help would be appreciated FYI the tractor was used with only 350 hrs when I got it 5 yrs ago

 

[North Idaho Wolfman]

I am looking for some input My L3010 lugs down really easy, I understand how to run a hydro , I know its not a fuel petal. this will happen in mid range and even in low. I have checked or replaced all the normal filters , boost pump ran fuel cleaner , blue out the fuel lines. I even had it checked with a local mechanic who doesn't like hydro's and thinks the engine is just to small. he did boost the fuel up and claims its up to rating at the pto But that is not working the hydo at the same time right ? I really find it hard to believe my b9200 can outwork this all to hell ! I am convinced its some thing with the fuel its fine until you try to back up with the wheels turned to hard or slight incline or soft ground as soon as you need it to make HP it drops the rpm bad,. Could this be bad injectors is there a way to test the pressure or maybe a bad hydo pump? any help would be appreciated FYI the tractor was used with only 350 hrs when I got it 5 yrs ago

Make a video with audio of it doing what your talking about, Post it on YouTube, and give us a link to see / hear it.

 

[JFP]

Okay Thanks I will but I won't be there for 2 weeks its at my cabin

 

[Tx Jim]

Check to be sure fuel tank vent is open/not clogged. Many yrs ago I had a M4900 that lacked power. After I performed most common fuel diagnostics procedures the local Kubota dealer service manager advised me to closely inspect gallies in water separator housing. I found a small screen on fuel shut-off valve on WS housing clogged. Cleaned that tiny screen & lack of power problem was solved.

 

[JFP]

Check to be sure fuel tank vent is open/not clogged. Many yrs ago I had a M4900 that lacked power. After I performed most common fuel diagnostics procedures the local Kubota dealer service manager advised me to closely inspect gallies in water separator housing. I found a small screen on fuel shut-off valve on WS housing clogged. Cleaned that tiny screen & lack of power problem was solved.

 

[JFP]

Thanks mine only has one filter but I will try running with the fuel cap loose to see if it makes any difference. I am certain that something is wrong it's not just too small a engine

 

[JFP]

Make a video with audio of it doing what your talking about, Post it on YouTube, and give us a link to see / hear it.

Hi heres a link i am not sure if I did this correctly But lets see Thanks

https://drive.google.com/file/d/15Dcw_0AObgifZre64kzyEy6xDAWZL_24/view?usp=gmail

 

[North Idaho Wolfman]

You don't have the file set to share, so we can't view it.

 

[JFP]

sorry I will try again shortly

 

[JFP]

I am not sure how to do this i will have to get my son to help when he's available

 

[North Idaho Wolfman]

Open google drive, right click on the file, then set to Anyone with link, and viewer, then click on copy link and share that new link.

 

[JFP]

PXL_20260522_222038681.mp4

drive.google.com

 

[JFP]

LMK if this works now ? watch the whole thing as the engine rpms drop with out the PTO I do have it in mid range 4 wheel and I believe the steering uses hydraulics but this is a slight grade not a hill it will do the same under any load in the mud with the wheels strait no PTO but The hyd seem strong when using the loader ? Can I test the fuel pump pressure somehow and the hydro pump ? I am ready to take it to the dealer but afraid they will charge me a fortune without correcting the problem ! Thanks'

 

[Grandad4]

The L3010 was the smallest of the Grand L10 series and at 30 hp, was considered by some to be underpowered for its weight. I test drove a new one back then - a Glide Shift one instead of HST - but still it did seem to work hard. There was definitely not much power to spare.

Yours does sound pretty normal to me - just an amateur - until you make it work. Then it acts like the brakes are set.

So questions arise about how your 3010 is set up. Do you know if the tires are loaded with ballast? What's on the 3 point in back? Is that a loader with a grapple up front? If you have a 30 hp HST lugging around 5,000 lbs of tractor and gear, it ain't going to be zippy.

About that HST. Has it been serviced lately and what fluid was used? Filters OK? Fluid level OK?

Is the 3point adjusted and working correctly?

Just some of the non-engine things to think about. The experts here will have more. Good luck figuring out what's happening.

 

[JFP]

The L3010 was the smallest of the Grand L10 series and at 30 hp, was considered by some to be underpowered for its weight. I test drove a new one back then - a Glide Shift one instead of HST - but still it did seem to work hard. There was definitely not much power to spare.

Yours does sound pretty normal to me - just an amateur - until you make it work. Then it acts like the brakes are set.

So questions arise about how your 3010 is set up. Do you know if the tires are loaded with ballast? What's on the 3 point in back? Is that a loader with a grapple up front? If you have a 30 hp HST lugging around 5,000 lbs of tractor and gear, it ain't going to be zippy.

About that HST. Has it been serviced lately and what fluid was used? Filters OK? Fluid level OK?

Is the 3point adjusted and working correctly?

Just some of the non-engine things to think about. The experts here will have more. Good luck figuring out what's happening.

Yes the tires are loaded, in the picture its a finish mower, 3 pt is fine, the hst was serviced before I got it has about 100 hrs since. I think they used other fluid because the filters are Baldwin not Kubota? Can that possible be the problem?

 

[Russell King]

The use of poor fluids in the HST could be a problem. Most people here recommend the SUDT2 fluid to help reduce noise and strain on the HST system. Do you have any idea what fluid is in the transmission system at this time?

It sort of sounds like the hydraulic system is getting loaded up like there is a blocked passage between the pump and the return to sump. If it was me I would start by disconnecting all quick connects in the hydraulic lines and cleaning them and then reattach them and check that they are all well connected.

You can probably get a Work Shop Manual (WSM) and perform some diagnostic testing on the hydraulic systems on the tractor. This site Kubota Books dot com has it listed. Just use the blue links in the index to download it- don’t open any pop up ads that may appear (that may want you to pay for what is offered free/donation requested at the site.

I think the power steering uses one pump and then the rest of the hydraulic systems use a separate pump and then there is a HST pump involved. The power steering and hydraulics pumps are probably tandem pumps externally mounted while the HST is internal.

@TheOldHokie and @North Idaho Wolfman may be along to provide more expert opinions.

 

[North Idaho Wolfman]

Any smoke when it's bogging down?

 

[JFP]

Any smoke when it's bogging down?

no the rpms just drop right off , I did check to be sure the brakes weren't draging

 

[JFP]

are you able to see the video?

 

[Russell King]

Yes the video can be seen, at least I can see it.