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Leaking hydraulic cylinder

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baron

11-24-2000 22:50:59




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The "crowd" cylinder on my '73 Ford backhoe is leaking pretty good from packing. Can anyone walk me through what to expect in installing a "kit" form Ford? The end cap is threaded so I assume I start there! Thanks for any help...




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robert hudson

11-27-2000 18:13:08




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 Re: Leaking hydraulic cylinder in reply to baron, 11-24-2000 22:50:59  
Depending on how tight the piston rod nut and packing gland nut is. You may need good long handled wrenches and a good vise. I try to repair the cylinders by leaving the rod connected to the boom (saves clamping it in a vise) i use a solvent spray nozzle to develope a vacuum to help pull the rod back into the tube after rebuilding. Their simple to rebuild, all you have to fear is fear itself, you'll wonder why you waited so long to repair it. good luck

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T_Bone

11-24-2000 23:58:05




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 Re: Leaking hydraulic cylinder in reply to baron, 11-24-2000 22:50:59  
Hi Baron, There pretty straight forward on the "dipper" cylinder. The others are called a boom cylinder, the bucket cylinder and the stablizer cylinders.
On a dual acting cylinder, when you pull the piston rod out it will squirt oil all over, remember it has oil on both sides of the piston no matter where you stop the ram. I install a used hose into a bucket for this purpous.
Take the packing nut off (this screws into the stuffing box), then unscrew the stuffing box (this screws into the the cylinder ), then remove piston rod. Preclean everything and keep it clean. Watch how all seals come apart as you can't reinstall backwards or they won't work!
Use lint free rags.
PreOil all seals with hydraulic oil before installing.
Keep it clean! There's more problems from people not keeping hydraulics clean. The second problem is installing the seals wrong. Thats it!

T_Bone

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