Claas Xerion front linkage problem

[Norfolkboy]

Afternoon, out Xerion 3800 the front linkage doesn't lift square. We have put new pipe work to it, tried an equalising valve, removed all pins to check it's free, pressure tested rams. But they still don't lift equally, not by much but enough to notice. Last resort is changing the seals in the rams today.

We have taken the rams off and still does it pushing fresh air when couple to a different tractor.

Any advice would be welcomed! Thanks

 

[Sausage]

When fully lowered/raised are they level?

 

[Norfolkboy]

When fully lowered/raised are they level?

Yes they level up when fully raised or lowered but the lift rate is just slightly out with the rams

 

[Sausage]

If you leave the arms up for a while with weight on do they drop at all? Wondering if ram seals might have slight leak?

Does it happen when raising and lowering or just raising?

 

[Aftermaths]

Is one ram bent?

 

[Norfolkboy]

If you leave the arms up for a while with weight on do they drop at all? Wondering if ram seals might have slight leak?

Does it happen when raising and lowering or just raising?

Haven't noticed it but going to change the seals, running out of other ideas

 

[Drillman]

Did they lift square with weight/implement on

 

[Norfolkboy]

Is one ram bent?

We don't think so, using it the other day and the linkage worked fine for a day and then the next day was playing up and then fine for a bit. But majority of time it plays up

 

[Norfolkboy]

Did they lift square with weight/implement on

No they don't lift square with an implement on and also don't lift square with no weight on

 

[Dukes Fit]

If the rods are true then it sounds like a piston seal or a score inside the barrel.

Change both the inner and outer piston seals if you can

 

[# Robin]

This reminded me of a muck grab where the two rams were slightly out of sync… found one of the pipework adapters had only got a tiny hole through and wasn’t properly drilled so oil flow was restricted on one side. Might be worth a check?
Is it piped with a simple T-piece between the two rams?

 

[Norfolkboy]

Updated replaced seals in the rams and didn't help. had the flow measured through the rams and they both had the same flow . So no idea what else we can, apart from brace themselves together so they have to move together

 

[# Robin]

Got some pics? And are they definitely two same sized rams?? Always same side lagging?

 

[Mur Huwcun]

Can you or have you swapped rams around to see if problem moves if it is allways same side that’s lagging. How is it piped? T piece in middle and two hoses to each ram or hose to one ram then onto next