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Tractor Talk Discussion Forum

Hydraulic Cylinder Rebuild

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MFBOY

07-06-2005 17:31:35




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I did a bad thing. I lifted a heavy load on the pallet forks with my Massey 304 Industrial tactor, equipped with a MF 300 loader, and bent one of the forks. That wasn"t the bad thing. The way I straightened the fork was. I lowered the backhoe outriggers and lifted the front of the machine off of a log with the tip of the bent fork. It brought the fork back to shape but bent the ram, about 1/4", on my bucket tilt cylinder. The bend in the ram caused the gland to score the cylinder wall. I didn"t realize all this until after I purchased a new seal kit $100 and dissasembled the leaking cylinder. A new cylinder is $1300 and discontinued (the discontinued part doesn"t matter). Initial estimate for welding and machining is $700. I havn"t had much luck finding used. Here is my plan. I was able to straighten the ram to within a couple of thousanths on a shop press and Ipe blocks. I"d like to try to fill the scored cylinder wall with a product like JB Weld or some kind of metalic epoxy after cleaning with laquer thinner. I thought I"d add some key by running a scribe in the grooves. I thought of making a scraper/squeegee of the proper diameter from a piece of formica on the lathe to spread the epoxy and do the same for a cabinet scraper to shape the hardened epoxy to the cylinder wall. After final cure I plan to lightly hone the cylinder and reassemble. I don"t expect the repair to last forever. I don"t use the tractor daily so a $1000 repair is not warranted. I only hope it will last long enough for me to find a good used cylinder. Any thoughts, suggestions, comments or reccomendations would be greatly appreciated.

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KENT

07-06-2005 19:29:45




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 Re: Hydraulic Cylinder Rebuild in reply to MFBOY, 07-06-2005 17:31:35  
TRY THESE FOLKS---THEY HAVE A BIG MASSEY SALVAGE YARD

PITTSBURG TRACTOR PARTS & EQUIPMENT ROUTE 6 BOX 368 PITTSBURG TX 75686 PHONE 903-856-6548 WATTS 800-342-6568 FAX 903-856-0456 Massey Ferguson running tractors, implements, and equipment



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xragman

07-06-2005 17:45:15




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 Re: Hydraulic Cylinder Rebuild in reply to MFBOY, 07-06-2005 17:31:35  
m.f. depending on how deep the scoreing in cylinder, you may get by without any cylinder work if you don't mind a little oil leak.the piston seals work on pretty rough finish ,for a long time.



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Gene Davis (Ga.)

07-06-2005 17:36:06




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 Re: Hydraulic Cylinder Rebuild in reply to MFBOY, 07-06-2005 17:31:35  
You might want to check with some of the hydraulic repair/machine shops that have rechroming capabilites to get a finish on the cylinder rod so that you don't continually eat up packing kits with the ram.



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Jon Hagen

07-06-2005 21:37:36




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 Re: Hydraulic Cylinder Rebuild in reply to Gene Davis (Ga.), 07-06-2005 17:36:06  
I have had some luck with filling scored areas on shafts and cylinder tubes with 60/40 acid core solder,then sand and hone to match the shape of the undamaged portion. the stuff fills and sticks at low heat and is easy to machine. It also wears like babbit,so makes a good wearing surface.



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