tight/stuck swivel ball end on hydraulic cylinder

   / tight/stuck swivel ball end on hydraulic cylinder #1  

dicktill

Silver Member
Joined
Dec 14, 2023
Messages
243
Location
Allegany NY
Tractor
'22 MF GC 1723EB nicknamed "Fergie"
Hi all,

I have a 3-point "side link" hydraulic cylinder with a swivel ball at one end. The cylinder itself is fine, but the ball is very tight, almost glued in place. The first fix I tried was to use paint stripper to get rid of all paint on the ball (there was a lot). I've then tried huge doses of PBlaster and Freeze-Off, and I've mounted the ball end to a vice and moved the cylinder "round and round", every-which-way, and it is still way too tight. Anyone have any better ideas to loosen it up, such as heat (where to apply?) or a damned-big-hammer (where-to-apply?) or valve-grinding-compound or ?????

TIA, Dick
 
   / tight/stuck swivel ball end on hydraulic cylinder #2  
Shame to fool with a nice snug mobile joint. If you could just find an application that would make it really work, to its full force capacity, back and forth reversals a few times it would probably settle in and get supple. Im just guessing that eye has never seen anywhere near its design stress.

Additionally, you could try a non particulate surface active metal lube like Militec1.
 
   / tight/stuck swivel ball end on hydraulic cylinder #3  
Hi all,

I have a 3-point "side link" hydraulic cylinder with a swivel ball at one end. The cylinder itself is fine, but the ball is very tight, almost glued in place. The first fix I tried was to use paint stripper to get rid of all paint on the ball (there was a lot). I've then tried huge doses of PBlaster and Freeze-Off, and I've mounted the ball end to a vice and moved the cylinder "round and round", every-which-way, and it is still way too tight. Anyone have any better ideas to loosen it up, such as heat (where to apply?) or a damned-big-hammer (where-to-apply?) or valve-grinding-compound or ?????

TIA, Dick

Put it into service and use it.

If you can move it on the bench, it's not tight.
 
   / tight/stuck swivel ball end on hydraulic cylinder
  • Thread Starter
#4  
The cylinder is well used, perhaps as much as 150-200 hours of use with a 3-point back blade. The issue with it sticking is that the cylinder body does not rotate and that causes the hoses to rub.
 

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