Possible Sticky Hydraulic Valve?

[jmurphy2007]

Just sold 2004 BX23 with 1150 hours. All fluids and filters changed approximately every 100 hours (once a year). Demonstrated machine with no issues. My brother calls me and tells me that some of the hydraulic functions don't work. Pivoting the front bucket works (left right function on stick. Bucket raises but will not go down unless you float it. Sounds like it is straining if you try to lower it using pressure. Backhoe bucket function works, but arm will not extend. Sitting on seat as if you were using backhoe you can move arm to the right but not the left. I have taken unbelievable care of this machine I'm at a loss. Any help would be greatly appreciated.

 

[Fallon]

Check the quick disconnects on the loader if it has any. If they arent seated fully or go bad they can act as a check valve.