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hy-cyl rebuild

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11-21-2004 12:12:03

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going to strat rebuilding the hy-cyl in my naa today any pointers or things I should watch for or not do.

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john in la

11-22-2004 05:45:32

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 Re: hy-cyl rebuild in reply to mikel, 11-21-2004 12:12:03  
Well I am probably to late to help you here but just in case you do not have it tore down yet.

Take the side cover off the hyd. case where the dip stick is and start tractor. Move hyd up and down and look in hole with a flash light to see if you can see any leaks.
This will tell you where to concentrate most of your work to repair the leak.


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Rick H. Ga.

11-21-2004 17:34:46

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 Re: hy-cyl rebuild in reply to mikel, 11-21-2004 12:12:03  
Hi Mike,

When I rebuilt the hydraulic cylinder on my 53 Jubilee project tractor, the rubber O ring and leather washer was completely gone. I could also see where the high pressure fluid had cut the edges of the piston.

I honed the cylinder and got a new style piston and a new rubber O ring and leather back-up washer. I also removed the unloading valve and spool and the control valve and cleaned them up good. Mine had the older style control valve without the O ring. I polished everything up good and put it all back together and it works pretty good. I have some minor hickuping but it does not affect the operation of the lift. The lift will also hold up my 5 foot brush hog for several hours.

Good luck on you hydraulic lift overhaul.

Rick H. Ga.

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