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Adjust a Hydraulic Servo Stroke on a Front Loader

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Anthony

02-01-2003 17:35:52




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I have a JD 300 (1020) with front end loader were the loader is sitting about 5 inches higher on one side than the other. The cylinder stroke on the high side is about 1.5-2 inches longer than the other side.

How do you adjust the stroke to level the loader?




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Roy

02-02-2003 12:40:01




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 Re: Adjust a Hydraulic Servo Stroke on a Front Loader in reply to Anthony , 02-01-2003 17:35:52  
Block your loader on a shoulder height immovable object. Take both loader cylinder pins out of the rod end [ chrome end] of cylinders. Lay the cylinders onto a wood block ontop of your front axle.If you extend the cylinders out with the tractor running, measure the length to see if there is indeed a length difference.. if there is no difference in length you have a bent loader. If the cylinders are different length , find out why?? a wrong cylinder ? Piston installed backwards on longer one??

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willie

02-02-2003 07:59:22




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 Re: Adjust a Hydraulic Servo Stroke on a Front Loader in reply to Anthony , 02-01-2003 17:35:52  
Anthony
just a swag(scientific wild a---- guess), but my thought is a bent boom arm or bracket. the lift cylinders should be piped together & self equalizing. most common spot is the angle in boom that provides clearance over front axle. make a cardboard template of this angle & compare with opposite side. measure distance from boom mount pin to bucket pin, compare sides. Hope this helps. things get bent is someone pushes too hard against an immoveable object.
Willie

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Jonathan

02-02-2003 07:15:31




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 Re: Adjust a Hydraulic Servo Stroke on a Front Loader in reply to Anthony , 02-01-2003 17:35:52  
If both cylinders appear to be original, the there is no stroke adjustment on those cylinders...I would disassemble the "longer" one and see if the nut that retains the piston to the end of the rod is backing off and contacting the barrel end.



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Anthony

02-02-2003 07:20:04




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 Re: Re: Adjust a Hydraulic Servo Stroke on a Front Loader in reply to Jonathan, 02-02-2003 07:15:31  
Both cylinders are original. Will try bleeding the fluid from the longer one to equalize the lengths, then see if it holds when pressure is applied again. I don't see any threads on the piston so I would agree there isn't any way to adjust the stroke, unless the threads are on the internal end--don't know if this would be common or not!



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Steve - IN

02-01-2003 18:04:03




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 Re: Adjust a Hydraulic Servo Stroke on a Front Loader in reply to Anthony , 02-01-2003 17:35:52  
Anthony,
I've got a 1020 with a 143 loader. I don't see any way to adjust the cylinder stroke in the loader manual. Is it possible somebody stuck in an off sized cylinder along the way? First off the wall thought would be to bleed the longer cylinder through the knurled part at the end, or failing that, detach the front of the long cylinder and turn it hoping there's some threading in there that will let yo adjust it.

Steve

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