3rd function valve on Kubota

Fromjim · Dec 28, 2008

Hooked_on_HP said:
Jim, take the plastic nut off, remove the magnet, take a wrench and unscrew the valve. When you get the valve out look for anything sticking in the ports of the valve. Also make sure all tho o rings are intact. Sometimes you find the problem and other times you don't find anything and put it back together and everything works fine. The valve itself can be taken apart further, but since it is under warranty I wouldn't.
Bill

Thanks Bill,

I will give it a try and let you know how I made out.

God bless you
Jim

Fromjim · Dec 29, 2008

Hooked_on_HP said:
Jim, take the plastic nut off, remove the magnet, take a wrench and unscrew the valve. When you get the valve out look for anything sticking in the ports of the valve. Also make sure all tho o rings are intact. Sometimes you find the problem and other times you don't find anything and put it back together and everything works fine. The valve itself can be taken apart further, but since it is under warranty I wouldn't.
Bill

I went to my dealer today, not a good day to do so, almost everyone was off, except the owner, he offered to send a man to my place, 50 miles away, to look at the tractor, but advised he could not get parts until next week, even Kubota has taken a vacation at this tiime of the year. I offered to take the valve apart and clean, and replace to see if this helped, then called him back to report that I found nothing foreign in the valve and it looked clean to me, he said he will send a man up here with a new valve when he gets it, I don't mind waiting, I can still use the blade to back scrape and the blowrer for large amonuns of snow.

The valve is definately sticking, the angle function needs power and when I press the button to angle my test light, lights and the plow angles,after I release the button the blade should tilt, the test light is out and the plow still angles. not much doubt that the soleniod is sticking or binding.

The dealer seems to think the valve body is warped and causes binding of the piston, he is probably right.

I'll keep you posted, it may be only next week sometime.

Thanks

Jim

rdpowell · Dec 30, 2008

Jim:

Can you do a pic of this valve ?

Fromjim · Jan 2, 2009

rdpowell said:
Jim:

Can you do a pic of this valve ?

Sorry about not answering sooner, I didn't notice the second page, I'll try and get a photo Monday, I won't have time Saturday or Sunday, I'll be busy doing the timing for a local Biathlon competition.

Thanks

Jim

Fromjim · Jan 7, 2009

I posted a complete detailed with photos and where did it go to???

Thanks

Jim

Fromjim · Jan 7, 2009

Hi Everyone,

I sent an email to ALO, Sweden, the maker of loaders for Kubota, they call them Quickie S40, Kubota calls them M40 loaders, after explaining my problem I asked for help in finding out the problem with my hydraulics, this morning I received a phone call and their troubleshooter asked me a few questions and came up with this response, the third valve is usually installed by the factory but sometimes it is installed by the dealer, installing a third function valve simply involves installing a servo valve and the plumbing for the hoses that would angle my plow, also connecting one of four plugs for electric control from the joystick. The problem comes when the servo valve is installed, it is round and has two possible ways of being installed, if you are not careful making sure the ports on the servo valve match the ones on the hydraulic spool valve you have a problem like mine, I was told to remove the servo, check the matching of the ports and if not matched to rotate the servo valve, each part has 5 ports, two on one side of the face and three on the other, seems simple if you know what you are looking for, the problem is that the wires come from the left when facing the valve and one would assume the Solenoid would be on the left, which if done this way causes the ports not to be in allignment, the reason my valve had limited use, is because two of the ports are slightly oval and when installed wrong will still partly cover the three holes but will not operate properly.
I removed the servo valve, rotated it 180 degrees, re-installed and now everything works perfectly.

If anyone needs more information just post or email me.

Thanks for your interest and help

Jim

Hooked_on_HP · Jan 7, 2009

I glad you finally got things straightened out. I am also impressed with ALO having a tec give you a call to help solve the problem. So many companys want to do everything by email nowdays. When I am having problems I want to talk to a real person.
Bill

Fromjim · Dec 24, 2018

Fromjim said:
Hi Everyone,

I sent an email to ALO, Sweden, the maker of loaders for Kubota, they call them Quickie S40, Kubota calls them M40 loaders, after explaining my problem I asked for help in finding out the problem with my hydraulics, this morning I received a phone call and their troubleshooter asked me a few questions and came up with this response, the third valve is usually installed by the factory but sometimes it is installed by the dealer, installing a third function valvI am back to ree simply involves installing a servo valve and the plumbing for the hoses that would angle my plow, also connecting one of four plugs for electric control from the joystick. The problem comes when the servo valve is installed, it is round and has two possible ways of being installed, if you are not careful making sure the ports on the servo valve match the ones on the hydraulic spool valve you have a problem like mine, I was told to remove the servo, check the matching of the ports and if not matched to rotate the servo valve, each part has 5 ports, two on one side of the face and three on the other, seems simple if you know what you are looking for, the problem is that the wires come from the left when facing the valve and one would assume the Solenoid would be on the left, which if done this way causes the ports not to be in allignment, the reason my valve had limited use, is because two of the ports are slightly oval and when installed wrong will still partly cover the three holes but will not operate properly.
I removed the servo valve, rotated it 180 degrees, re-installed and now everything works perfectly.

If anyone needs more information just post or email me.

Thanks for your interest and help

Jim

Back to view this old problem, today, Dec 24,2018 I decided to try and find out what is wrong now, having not used this plow since 5 or 6 years I now find that my plow will not angle, so decided to read and see what the original problem was, the valve body at that time had to be rotated and my problem was solved, this time nothing works using the switch and buttons to activate solenoid that diverts the hydraulic oil to angle the blade, my problem has to be, either electrical or mechanical, I need help details in doing both, I am getting old and need help using this forum, I lose my place and have a heck of a time getting back to where I was, I'm not going to quit, but it sure slows me down. Thanks for your help and patience, God bless all and have a Merry Christmas, Jim