ronj
CTW Member
Posts: 72
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Post by ronj on Jul 21, 2008 4:34:28 GMT -5
Sandfarmer Have a couple of questions on your pictures. RonJ
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Post by Ronmar on Jul 21, 2008 15:07:21 GMT -5
Quicksand, In the first pic you posted of your diverter www.nickkeenan.com/pictures/tractor/P7180017.JPGIf that upper soft line that is attached on top of the banjo hard line is the low pressure return from the steering valve, and the hard line runs direct to the resovoir, it looks as if you have room to cut that hose line and put in a "T" for your low pressure FEL valve return somewhere under the bar and off to the lower left of the above pic. That is probably right under your FEl valve and would be a short run from the FEL valve return port and an easy solution to this problem. That return from the steering is the hose I am planning on putting my "T" into... That appears to be the same diverter I have on my 284. The soft line comming into the end of the valve from the left is the High Pressure input, probably from a QC on the FEL valve output?. The Upper banjo with the piggybacked hose is the LP return comming from the steering(piggybacked hose) and the return flow from both steering and diverter leaving thru the hard line back to the resovoir. The lower hose attached to the fitting right below the banjo is the high pressure high priority line that supplies the steering. The low priority high pressure line is under the valve as shown in that picture, and almost out of sight. You can just see that hardline under the HP input hose. That low priority pipe feeds the 3PH control valve? That output hard line has most all the hydraulic flow(a little always leaks out the return) untill you turn the steering wheel. As soon as fluid is allowed to flow out the priority port, Then the diverter does as it is named and diverts the flow from that hard line to the hose that feeds the steering valve, allowing steering before/over 3PH lift.
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Post by quicksandfarmer on Jul 22, 2008 22:23:39 GMT -5
OK, lots of good posts to respond to. Tuffytractor wins the prize for having the hydraulics that look most like mine (although your tractor looks way too clean, it must be nice to live where there's no dirt).
Rob wins the prize for brilliant observation, by noting that I can get the hoses off the diverter valve if I take the diverter valve off the tractor first. I need to mull that a little bit, as there are two hard lines going to the valve so I may not have much range of motion. Plus the valve is below the tank, so I have to figure out a way to keep the fluid from siphoning out while I have the hose off. What really stinks is that I need to take it apart once just to see what kind of fitting is on the inside, and then take it apart again once I get the fitting.
To RonJ's questions: 1. Is this the hi pressure in? Yes. 2. X and Z are two ends of the same hose, the supply to the power steering valve.
To Ronmar: Everything you say makes sense to me. I agree that cutting the low pressure hose is one solution. I'm a little reluctant to do that, because it's irreversible and I can't find a source for a replacement hose. It also appears to be a metric hose and I'm a little worried about getting a fitting that works. Plus, I'm not sure how to get the hose off if I need to replace it -- although Rob appears to have provided a solution to that particular problem.
So now it's time to mull a little, and tinker a little.
Thanks.
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ronj
CTW Member
Posts: 72
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Post by ronj on Jul 23, 2008 3:17:07 GMT -5
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Post by Ronmar on Jul 23, 2008 16:48:37 GMT -5
Ron I didn't see any metric fittings there... Those ORFS "Ts" you linked to are SAE or standard thread and using their fitting selection wizard, there is not a listing for metric ORFS.
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ronj
CTW Member
Posts: 72
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Post by ronj on Jul 23, 2008 18:45:02 GMT -5
Oops! RonJ
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Post by 254owner on Jul 24, 2008 6:41:37 GMT -5
Quicksand,
I'm a newbie at this but on my 254 the knob under the seat usually controls the rate of rise and fall of the implement on the rear lifter.
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Post by Ronmar on Jul 24, 2008 11:12:49 GMT -5
254 owner If you have a half remote on a 254/284, that knob under the seat also isolates the 3PH cylinder if you screw it all the way in. This then forces all the fluid that would normally go to the 3PH lift cylinder, back to a female quick connection on the right rear of the tractor. I believe this half remote was intended to feed a single acting cylinder say on a dump trailer, but I think it could also have other uses. With the knob closed and a suitable cylinder such as one on a dump trailer bed attached to that QC, the bed would raise and dump when the 3PH lift control is raised, and would lower by gravity when the 3PH control lever was lowered, just like the 3PH does. Here is a link to the hydraulic schematic I drew for my 284. Yours may or may not have the half remote. I think that was what quicksand farmer was talking about when doing his testing, thinking that perhaps his works the same way. I do not know how the 354 half remote works.
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quikduk
CTW Life Member
Dog House
Posts: 552
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Post by quikduk on Jul 24, 2008 18:47:24 GMT -5
My 354 half remotes work the same way. IMHO, they are a POS. I would use a single acting or double acting single spool valve plumbed either before or after the FEL valve.
I use the half-remote return line as my return to sump line (since that is where it goes) for my new FEL valve & T&T valve as they both have Power Beyond sleeves and need a return to sump/bypass line.
I have plugged the OUT half-remote line connection on the hyd. reservoir (next to the knob) with a metric drain bolt.
Rob did this on Lorettas "Honeybee".
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Post by Ronmar on Jul 25, 2008 11:16:47 GMT -5
Yes, it is a little clunky to operate. I think it would probably work OK for a dump trailer if I had one:) I do use it to maintenance filter the hydraulic oil when I am not using the 3PH, as most all the fluid flow goes back thru the 3PH control valve. I modified the filler plug on the resovoir to serve as a hydraulic return and added a small 10 micron filter. It is on my tractor right now. Ron
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