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#1
06-09-2014, 11:17 PM
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1810 Hydro problem
I just restored a 1810 and converted it to a 1811 (added hydraulic lift).
After driving it for the first time after the project was done, it drove perfect for about 10 minuets or so, then it started to "lurch" forward when starting from a dead stop and the same for reverse, instead of "easing" into forward movement or easing into reverse movement. Could this be from adding hydraulic lift and not bleeding air out of the system? because I did not !...I do have one hydro relief valve leaking, but I don't think that could be causing this problem, or am I wrong ? Any and all input will be greatly appreciated  PS...I also changed the hydro fluid and filter. 
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#2
06-10-2014, 05:44 AM
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What does your Trunion look like...??? Are all linkages tight...???
__________________
[B]Roland Bedell[/B] CC Models: 100, 105, 1450, 782, (2) 784, & 2072 [SIZE="4"][B][COLOR="Red"]Buy:[/COLOR][COLOR="Blue"] Made in the USA[/COLOR][/B] [/SIZE]:American Flag 1:
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#4
06-10-2014, 06:34 PM
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It's not air. They system will self bleed once primed. Either a linkage issue, or perhaps the valve. Could be an oil issue, as in wrong filter, old filter gasket that stayed stuck to the housing, low oil, wrong oil....... Dig a little more, not much info to work with yet.
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#5
06-10-2014, 09:22 PM
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The Trunion and linkages look good...I did not change the relief valve, should I have ?....I will have to re-check the oil that I put in it, however, the oil that I put in was suggested for hydro transmissions. the filter is a Purolator that I cross reference from the filter that was on it.
I also need to mention that I forgot to in the original post, is that when I "hold" the hydraulic lift lever in the down position or the lift position it will drive fine (no lurching). The only thing's I did was add hydraulic lift, change hydro oil, and hydro filter.....before I did these things the tractor drove fine.
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#6
06-10-2014, 09:28 PM
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Sounds like the charge circuit is low on pressure. I suggest since it wasn't that way before, to put either a Wix #51410 or a CCC 923-3014 on it. I don't know what fluid you used, but IH Hy-Tran, or any tractor hydraulic trans fluid, ATF, or even straight 30wt oil should have been fine. Start with the filter. If it still is giving you fits, check the pressure on the charge pump. Did you take the hydro or charge pump apart?
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#7
06-10-2014, 10:24 PM
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He added a hydraulic lift to this tractor from the original armstrong lift. IIRC, I was thinking the relief needed to be adjusted or changed. If you go to Parts Tree and look up an 1810 & 1811 the relief valves have different numbers. The 1810 uses a SU-9510385-0006 and the 1811 uses a part that ends in -0003. I think I remember reading about this a few years ago but I may be wrong.
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This ain't no hobby....it's an addiction
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#8
06-10-2014, 10:31 PM
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Quote:
You might be right. Kinda like the manual lift 169's needing the field change over kits to add hydraulic lift.
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Josh Diesel Cub Cadets...........
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#10
06-10-2014, 11:04 PM
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J-mech, can you tell me if a new loader with no oil in the rams or lines needs to be bled or will the operating of the levers back and forth get the air out?
__________________
1811 Hydro "Failing to prepare is preparing to fail". 
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