hello im new to the fourm site and wanted to say im glad to be apart of this community I have a older john deere 410 backhoe im not even sure what year it is the problem im having is the pressure control valve oring broke and I tore it down and put a new one in and while I had it apart I went ahead and replaced the filters and hydraulic fluid got it all put back togeather and started it the loader will move up and down just fine but the backhoe and boom has no hydraulic movement or pressure in the boom to backhoe control valve if anyone could help me out I would be very grateful
Weird. Is this a straight 410, no letters on the logo? And the "pressure control valve" that you took apart, did you remove it? and where is it located? on the front main hydraulic pump, or inside the frame behind the engine?
its a 410 d dont know the year it belonged to a mobile home park owner and was their when she bought the place the pressure control valve is located on the transmission case in mid section of backhoe its right next to the transmission filter housing i was using it and it had started leaking bad thought it was a hose broke then after cleaning it up noticed the fluid was coming from the valve so tore it dwn and seen the bigger oring was blown apart so replaced it put it back togeather and now pressure to boom or control valve cant figure it out.crazy
im wondering my son helped me and put the hydraulic hoses back on we had the pressure valve hose off and the hyraulic return valve hose off both of them go to the boom to backhoe control valve if he got them reversed when putting it back togeather would that cause that problem i asked him and he said he put them on the right way but makes me wonder but if he did i dont want to reverse them and makes things worse than it is already
OK gotcha. If everything was working before you tore into it, then take it apart again, more carefully and with a manual this time. Then change the hoses around on the priority valve, because it should be the other way around, the backhoe should work but not the loader, serious. Actually, wait for a second opinion, because I'm not at all sure this applies to a 410.
ok well i appreciate your help like i said it worked ok before it was tore dwn and i did all the repairs on it using a 410 d manual i dwnloaded off the internet and was put back togeather the way it was taken apart besides the hoses i will take fault their and say my son did that part but when it started up i let it run alittle before i tried anything to make sure their wasnt any leaks the loader will go up and dwn just fine but when i went to move the boom their was nothing as pressure or anything on its part so i will see if anyone else might have a solution before i tore it all apart again dont enjoy this cold weather laying under it on the cold ground lol but definitely got to get it fixed so once again thank you for trying to help me
As I recall the pressure control valve limits pressure to the loader and steering, and they have priority. Either the valve is not working correctly or as you suggest the backhoe port is actually going somewhere else, maybe the return side. The old straight 410 the serial plate would say 410 D, was either for "diesel" or "Dubuque" can't recall, so it's confusing.
Whenever you service hydraulic components it's imperative that you mark all lines that are disconnected, your case is a perfect example of that, two different people involved in the disconnect and re-connect of lines. I'm not saying that's what your problem is, just saying it illustrates why one should always mark connections. A simple center punch and hammer is all that is required. On the first connection you are going to disconnect, make a single punch dot on the hose fitting and the adapter fitting it's connected to. On the second connection, punch two dots, you get the idea, a permanent mark that removes all doubt as to which hose goes where. BTW, does the steering work? On edit, Lantraxco posted while I was typing, he mentioned the steering as well.
i honestly dint try the steering after i seen that the boom wasnt working i shut it off and started looking at things double checking my work and yes i agree 100 percent on what you said about 2 diffrent ppl he helped me take it apart but was more helping me with tools etc but i will start it first thing in the morning and see if the steering turns or not and also reverse the 2 big hydraulic lines that go to the boom to backhoe control valve and see if thats whats causing it cause in all honestly i went slow and took my time putting it back togeather besides the 2 hydraulic lines like i said i put new fluid and filters in it while i had it apart only filter i did not change was the one that goes into the transmission the long screen one but the reg ones i did change.and i truly thank you all for helping me im glad that their is professionals like you all that the reg guy can talk to
No worries blakster, that's why we're here. :drinkup I can't say for certain about the 410D, but the common way Deere configured these machines was to give priority to the steering, the backhoe, the outriggers, and the auxiliary circuit (if equipped), oil is supplied to the front loader secondary to the priority functions mentioned above. All that means is, forget about the backhoe for a moment, you're driving the machine around to load the bucket with gravel and drive it to load it on a dump truck. Once you load the bucket with gravel, you drive it to the truck to load it, you're raising the loader arms to a dump level, but you still need to steer while you're driving. The machine makes sure you have oil supplied to steering first before it sends oil to the loader control valve to raise loader arms, steering has priority over the loader controls.
Which valve did you pull apart again? The one with three spools that's bolted to the side of the transmission? or one with one spool that's bolted to the side of the frame? I'd have thunk that the return lines from the backhoe valve, and supply for that matter would be too big, different lengths, etc to be able to reverse, but I've never done it.
the pressure control valve thats bolted to the side of the transmission has 3 bolts that holds it and has the pressure spring that goes inside it the big hydraulic hose hooks to the back of it and goes up to the top of the boom to backhoe control valve the front of it has 2 hydraulic hoses one is all metal the other is a big rubber hose that goes to the pump in the front of motor but i never took it apart just unbolted it and put new orings their is a big oring the size of a half dollar then one the size of a dime thats all i did was cleaned it off and put new rings and put it back togeather
Now I'm even more confused, there's only a dozen pressure control valves on a JD backhoe and that's neither of the three I was thinking of:beatsme Willie and Lantraxco might have it figured out? Edit: I'm thinking of a different model, same system basically, just different components. The priority valve gives the steering priority over the loader, but I think this valve might have to do with the return side of things, which is the supply side to the hydraulic pump. Of course if you've blocked the return line from the backhoe valve...
Delemer, If you look up a straight 410 in the Deere system you will find the pressure control valve. The steering tees off the pump outlet line ahead of this valve, the loader control valve and the backhoe attach to it, the return is direct into the tranny case through the port the big o-ring seals.