Problem with new L3130 HST

Anonymous Poster · Jun 16, 2003

Hi all,

My L3130HST has a problem that I can't figure out. Don't know if I'm missing something obvious. Here's the deal. Bought the tractor with a loader and the Kubota backhoe (4690). For the first time this weekend, I went to take off the backhoe, which went OK. But my 3 point hitch does not lift at all. I opened, then closed the control valve under the seat several times, and cycled the draft control lever for the 3 point hitch, but the arms do not move. They are in the lowest position. The only other info I can offer, is that the tractor was purchased with one set of dealer installed remotes on the rear. Perhaps something went wrong during the installation. I will be calling the dealer later for tips, but I purchased from out of state, so I'm looking for any help I can get here.

Thanks

markie61 · Jun 16, 2003

If it is any comfort, I know that my NH has a "diverter" valve on the manifold block that has to be in one of two postitions depending on the hydraulic outlets. It's use is illustrated in my owner's manual (not just the service manual.)

Perhaps it's just one of the those types of adjustments.

Mark

_RaT_ · Jun 16, 2003

Did you get it with the hoe attached, ready to go? My guess would be that if you did then there is a diverter valve to turn.

CTyler · Jun 16, 2003

My 3pt will not work if I have the valve open for the remote.

Anonymous Poster · Jun 16, 2003

CTyler,

Not sure what you mean about the valve to the remote. Do you mean the lever projecting from the fender. Is there a separate valve to allow oil to go to the remote that can be opened or closed. I looked on my L30, but honestly I'm not really sure what I'm looking at.

If anyone can tell me where there would be a remote valve to turn the 3pt hitch on/off it would be appreciated. To answer previous posts, yes the tractor was bought and delivered with a backhoe, but the backhoe has it's own hydraulic pump and system. Perhaps some valve got turned off anyway by the dealer? I don't know.

CTyler · Jun 16, 2003

On the right hand side there are three slots where you can have up to three levers(valves) for remote items. I have one installed for my backhoe to run off the tractor hydraulics. If the lever is moved forward to open the valve for backhoe work the 3pt will not raise.

Do you have anything installed in those slots?

Anonymous Poster · Jun 16, 2003

Yes, I have 1 handle poking up through those three slots, for the 1 remote rear valve. I tried raising the 3 pt hitch with the remote in the middle position, as well as either forward or back on the remote valve and nothing.

I just spoke with the service technician at the dealer where purchased. They said there is a shut off valve on the hydraulic manifold right under the right side floor board. They said there is a slotted screw that needs to be turned 90 or 180 degrees, that will let oil got the rear of the tractor. They said they shut the oil off to the rear of the tractor when mounting the type of backhoe I have. I will look tonight, if I have time, but it sounds like I know what my problem is. Will report back tommorow or wednesday after I check it out.

Thanks again all for your help.

MarkV · Jun 16, 2003

I believe I would be a little PO'ed if my dealer had shut off the hydraulics to the 3pt and not explained that in advance to me. /forums/images/graemlins/mad.gif I would also be interested in why that is required if the backhoe has its own hydraulics.

MarkV

Anonymous Poster · Jun 19, 2003

Ok,

Here's an update. I looked for and could not find a valve as the dealer described over the phone. Again, remember I purchased out of state, approx 400 miles away, so right now I'm trying to resolve this over the phone, with me doing the work. I am a competent mechanic, but never owned or worked on a tractor before.

So yesterday the dealer faxed me a technical service bulletin which requires the removal of an inline strainer or filter for the rear hydraulics. This affects certian serial numbers of the L30 series tractors. I performed the service as required last night, and still not hydraulics to the rear of the tractor. The screen removed was approx 50-60% obstructed with metal filings/drillings. Mind you this is a small screen, about 3/8" diameter, so it doesn't take much to obstruct it, but this has not solved my problem yet.

I'm about to call the dealer service department now.

CTyler · Jun 19, 2003

Hmmm...Well that screen was going to be my next suggestion cause I had the same problem. My 3pt stopped working(lifting) unless I reved the RPM's up to 2700. Then it slowly started to lift. It kinda worked it way through it though after about 20 min of screwing with it.

Anonymous Poster · Jun 19, 2003

CTyler,

I suspect that I have a chip or piece of debris which has jammed up somewhere, preventing the valve from shifting or oil from flowing. Maybe I'll get lucky and it will work loose, otherwise I will most likely have to pay to have it hauled to a dealer, and sit for a few weeks till it gets fixed.

Thanks for the help.

Anonymous Poster · Jun 20, 2003

Loughman, I've got a 3130 with the BH90 backhoe. When I remove the backhoe I have to connect the male and female hydraulic couplers together or the 3 point will not raise. If you are standing at the back of your tractor looking forward the hoses are on the upper right hand side. I know that you have a different backhoe that uses it's own pump, and most likely your tractor does not have these hoses plumbed to the back, but I'd hate to see you have to ship your tractor back if this was the problem. I was also thinking that if your backhoe is a 3 point mount wouldn't there be a shut off/safety valve that would shut off the hydraulics to the 3 point so you couldn't accidentally bump the lever and raise the 3 point while the backhoe was attached? I wish I could be more help, but that's all I could come up with. I hope you get it figured out before you have to ship the tractor back.

_RaT_ · Jun 20, 2003

Funny hntr, I was thinking the sane thing. My L48 had a lockout latch.

Anonymous Poster · Jun 20, 2003

Based on several discussions with the service department at the dealer where purchased, I summarize as follows:

There is no shut off or diverter valve on L30 series tractors. There is a screen, which is required to be removed on certain serial number tractors. Kubota has issued a TSB for this. My tractor fell in the serial number range. I found and removed the screen.

Kubota service in Georgia, who my service tech has spoken with says that the tank port and the power beyond port hoses on the hydraulic block under the right floorboard of the tractor may be swapped. They say if these hoses are swapped, the loader will work fine (mine does) but you will not get oil flow to the back of the tractor, which I don't. I'm at work and they faxed me the page from the service manual, and from memory, I would say they are correct. I will check this evening, and if swapped, correct. Hopefully that will resolve my problem.

Also, I do not have the hydraulic couplers that hntr refers to. I have a set of couplings, but they are for a rear remote valve, and not "live", which I think is what you have for the BH90 hoe.

Thanks all, will post with further updates

Anonymous Poster · Jun 23, 2003

Problem resolved.

It turns out two of the hydraulic hoses for the front loader, where they connect to the manifold block under the right fender were swapped. This apparently causes the loader to work fine, but diverts hydraulics from the rear of the tractor.

I swapped the hoses per the tech manual, now everything works fine.

Thanks again all.

grainger12002 · Jun 23, 2003

Good for you,glad to hear it was not a problem at all.Enjoy it,sounds like a great tractor ! Now how about some pics

CTyler · Jun 23, 2003

I bet the dealer is thrilled that you fixed it yourself.
How many hats and tshirts is he sending? /forums/images/graemlins/laugh.gif

Anonymous Poster · Jun 24, 2003

Way to go loughman! I'm glad you got your dealer's problem figured out. I hope he's sending you some tubes of grease on the house, Dang there's a lot of fittings on these little tractors /forums/images/graemlins/smirk.gif

icat · Jun 24, 2003

Sounds like it's time to mark those hoses so the problem doesn't occur again. Isn't there a color coded "tie wrap looking" hose labeler? I think I recall seeing something like that before.

Anonymous Poster · Jun 24, 2003

icat,

The hoses that were swapped, were connected by the dealer when the mounted the loader on the tractor. These hoses are not normally disconnected, they should stay connected until they have to be replaced. I know I won't switch the hoses, so I won't be marking anything. If I had to replace a hose, then maybe I would mark them, or just change out one at a time.