Cylinder drift

   / Cylinder drift #1  

jmfox

Platinum Member
Joined
Nov 17, 2006
Messages
776
What causes a double action cylinder with no leaks to drift? Every other cylinder on the system does not drift.

jmf
 
   / Cylinder drift #2  
The fluid is bypassing the piston seals internally. It sounds like it need to be rebuilt.
 
   / Cylinder drift #3  
Yep, internal bypassing is the usual answer 99% of the time. The other 1% is a worn control spool.

It is leaking, but not where you can see it.

jb
 
   / Cylinder drift #4  
You may also have a seal that is nicked that is causing this. Possibly in the cylinder or in the loader valve. It should be pretty easy to fix.
 
   / Cylinder drift
  • Thread Starter
#5  
Thanks. If you can't see something leaking, it doesn't mean it's not leaking. On removing it I noticed it is rebuildable, so I guess the best thing to do is take it down to the cylinder rebuild shop.

jmf
 

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