HELP!! Please!! Pic or description of LOCATION OF HYDRO RELIEF VALVE B7610

DennisArrow · Jul 27, 2015

Recently I had a thread about using a hay spear on the bucket of my B7610. Lots of good ideas and thoughts from folks. I tested the lift capability of my bucket by strapping a round bale to my bucket. All was just fine. It lifted it up and though a bit tippy, as expected it was fine. Yes, of course I will use ballast on the back or a bale on my 3PH with a hay fork there.

Anyway, after LOTS of research I got a hay spear attachment for my bucket:

Bucket Forks, Tractor Forks, Loader Forks by Bucket Solutions......Heavy duty machined pieces....Did I mention HEAVY......but it went on well and looks just great with my amateur mechanical engineer eyes. Put it on just fine......Would barely lift the bale off the ground, let alone high enough to stack bales...........The weight of the spear must have been the straw on the camels back..........SO..........

After much research am banking on the fact that perhaps my pressure relief valve needs some adjustment. This is done by removing the valve and inserting shims to boost the pressure...........EASY PEASY........Get a pressure gauge and some shims............:

Hydraulic Pressure Tester with a gauge, shims, and instructions. Called the outfit and the owner is totally knowledgeable and helpful....So have that also...........

NOW......WHERE IS THE PRESSURE RELIEF VALVE???????????........Have looked and looked so does anyone have a description or a pic???........I really do assume it would be the same on most of the "B" series machines........Thoughts, pics, and advice would be appreciated.........God bless.......Dennis

Gary Fowler · Jul 28, 2015

My B26 RV is on the right side (seating in the seat) and almost directly under the seat. For good access, I remove the right rear tire. I have to remove an outside cover to expose the relief valve.

DennisArrow · Jul 29, 2015

Good thoughts Gary and thanks BUD.....wishing someone had a pic or something............but THANKS.......God bless....Dennis

David_Kb7uns · Jul 29, 2015

Probably would be a good idea to check the input side of the loader valve. Think I would have somebody do this with a little more skill level if you are having this much trouble finding the relief valve for the loader.

David

DennisArrow · Jul 29, 2015

Being a person with knowledge of how all the pieces of equipment look before one goes into repair or work on something, DAVID, maybe you could give the information to this rank amateur as to why I should check the input side of the loader valve......Thanks for the advice as I am working on the pressure relief valve and am trying to get information on that instead of the loader valve......But by all means, do advise PLEASE

Jj1479 · Jul 29, 2015

DennisArrow said:
Recently I had a thread about using a hay spear on the bucket of my B7610. Lots of good ideas and thoughts from folks. I tested the lift capability of my bucket by strapping a round bale to my bucket. All was just fine. It lifted it up and though a bit tippy, as expected it was fine. Yes, of course I will use ballast on the back or a bale on my 3PH with a hay fork there. Anyway, after LOTS of research I got a hay spear attachment for my bucket: Bucket Forks, Tractor Forks, Loader Forks by Bucket Solutions......Heavy duty machined pieces....Did I mention HEAVY......but it went on well and looks just great with my amateur mechanical engineer eyes. Put it on just fine......Would barely lift the bale off the ground, let alone high enough to stack bales...........The weight of the spear must have been the straw on the camels back..........SO.......... After much research am banking on the fact that perhaps my pressure relief valve needs some adjustment. This is done by removing the valve and inserting shims to boost the pressure...........EASY PEASY........Get a pressure gauge and some shims............: Hydraulic Pressure Tester with a gauge, shims, and instructions. Called the outfit and the owner is totally knowledgeable and helpful....So have that also........... NOW......WHERE IS THE PRESSURE RELIEF VALVE???????????........Have looked and looked so does anyone have a description or a pic???........I really do assume it would be the same on most of the "B" series machines........Thoughts, pics, and advice would be appreciated.........God bless.......Dennis

why don't you just call the local Kubota dealer an ask?

DennisArrow · Jul 29, 2015

Have done that Kubota dealer thing with a really informative guy like David above and he pretty much said the same things as David advised above. I guess I should just not believe that a picture says a thousand words and go to taking apart anything that has tubing going in and out and a 22mm bolt head. I thought perhaps someone on here had actually taken pictures of a B series Hydro relief valve and surrounding area so that a person could tell this from that.............. No big deal and guess I should just move along to a forum where information is actually exchanged...................Thanks for the help........God bless.......Dennis

kcender · Jul 30, 2015

When I had my B2620 I shimmed up the PRV like you are trying to do.It wasn't that difficult but I also had trouble locating the valve.It was a while ago and I don't remember exactly where it was but I was able to locate it by downloading parts diagrams from Messick's website.It is a free service they offer.I think it was in front of,and behind,the right rear tire but I am not positive.Not sure if this helps you any.

David_Kb7uns · Jul 30, 2015

What loader is on the tractor?

The pressure relief is usually between the input side of a valve and the first spool, if you have a newer tractor with an integrated loader valve then it gets a little more muddy. If you have a Kubota loader then you can go to the Kubota website and get the illustrated parts list that usually has the valve breakdown in it.

If you look at the valve there are the bores made for the spools and then there is one with no spools but just caps, that is where the relief usually is and it has lots of parts that if taken apart and not reassembled correctly in the proper order it will cause problems.

You should be warned that if you do not know what you are doing with hydraulics that they can really hurt you.

David

DennisArrow · Jul 31, 2015

kcender said:
When I had my B2620 I shimmed up the PRV like you are trying to do.It wasn't that difficult but I also had trouble locating the valve.It was a while ago and I don't remember exactly where it was but I was able to locate it by downloading parts diagrams from Messick's website.It is a free service they offer.I think it was in front of,and behind,the right rear tire but I am not positive.Not sure if this helps you any.

THANKS, it does........God bless.....Dennis