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Discussion Forum

510 Hydraulic Problem

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MorePower

04-27-2008 05:47:48
207.144.129.13



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From the number of post it seems that a lot of owners have trouble with the hydraulics on Longs. I hope someone can help me here. The problem is that the 3 Point Hitch will not lift a load. Here is what I have done so far: Added a new filter, Changed the oil. Changed the pump, Put a hose in the remote to bleed air, Used the bleeder valve to bleed air, Put a new O-ring on the filter housing.

When I changed the pump (filled it with oil) I have a small tater plow on the back and it came up at low RPM. That lasted for about 1/2 hour. Now I have to run the RPM up to get it to come up. When the lift is up, it will stay up, it does not bleed down. I hooked a 6' box blade up and the most it will come up is a couple of inches even at high RPM. Of note, I blew the rear end so after the repair checked the filter and of course it was full of crap. I cleaned it but noticed that the washer on the end of the filter was crimped like it had not been seated properly, so I tried to straighten it up and put it back in (my thinking is that this is only a seal for the filter and this would only allow dirty oil to bypass the filter and chould not cause lift issues at this time) and I'll replace it later.
I was told that because the lift does not bleed off that the big O-ring under the seat was good?? Any other suggestions?
Thanks Mitch

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MorePower

05-17-2008 14:38:33
207.144.129.13



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 Re: 510 Hydraulic Problem in reply to noncompos, 04-27-2008 05:47:48  
Jim I have good news and bad news. The good news, I now have the 3 pt hitch working. It lifts the 6' box blade to the top in just a few seconds without running the RPM up.
I looked at the "Magic Washer" like you suggested. Turns out it is nothing more then a copper crush washer. It did have some small dents on it too. Now I know from working on my plane that when you change the plugs (they have crush washers also), you have to put new crush washers on or anneal the old ones before using them again. I didn't have a new one so I annealed this one and it worked.

Now the bad news. I can't control the blade height. It's as if I have to have it all the way up or all the way down. I can't get it to stop just an inch or so above the groung. When it first went up it was jumping like you said it might, so I turned the control all the way to the left and the jumping stopped. But still I can't control where it stops. Do I need to adjust the sensitivity some more?

Thanks

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MorePower

05-04-2008 05:56:44
207.144.129.13



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 Re: 510 Hydraulic Problem in reply to steve98604, 04-27-2008 05:47:48  
Jim I don't have your address. Mine is mbuckman@twlakes.net.



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MorePower

05-01-2008 17:35:06
207.144.129.13



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 Re: 510 Hydraulic Problem in reply to Hard Knocks, 04-27-2008 05:47:48  
Jim I bleed to air out of the valve, I also have anouther unit that I took the valve out of that one and tried it. No luck. I took both valves apart and both look the same and there appears to be no damage. After all of that I took the filter out to see if that would make a difference and it didn't. I hooked a short hose to the remote and ran some oil out of it. There seems to good pressure (I don't know if there is 2300 PSI). With the box blade on it it will not come up at all, but I jacked it up with a jack and ran the pressure up and it stayed up fine. I thought I found the problem when I took the plug of the Pilot valve out (big hollowed out nut above the oval one) the valve would not slide up or down. I got it out and cleaned it up but it didn't do any good. I also ran the responsiveness lever all the way in and it didn't do anything. I'm using a tractor transmission/hydraulic oil from Wal-Mart, TruTeck or something like that, the guy told me it was made by Valvoline.

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Jim in NC

05-03-2008 03:56:11
172.162.240.65



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 Re: 510 Hydraulic Problem in reply to MorePower, 05-01-2008 17:35:06  
When you have a chance, email me your phone number. I have one other suggestion, and it would be easier to describe it over the phone.



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Jim in NC

04-28-2008 04:22:40
172.132.75.27



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 Re: 510 Hydraulic Problem in reply to MorePower, 04-27-2008 05:47:48  
At the front where the hydraulic line bolts to the lift, there is an oval-shaped valve with 2 flat sides. Bleed air out there with tractor running until a steady streanm of oil comes out. Do it at idle and crack valve open slightly. Tighten and see if that helps.

There is a "magic washer" behind this valve. That is what it is called at the dealer. It may pay to change it. Also, there is a "responsiveness lever" on the right side of the lift near the front, just over 1 inch long. Turn it counterclockwise to increase hyd, flow and clockwise to decrease it. Turn it to open it all the way. if your lift raises the implement them jumps up and down, back off of it a little until it is steady.
What kind of oil did you put in it? Most hyd. oil or universal tractor fluid is ok and even 30 wt non-detergent oil. You do not want any thing in there that will foam. Hope this helps.

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