John deere 225dlc boom wont go down

[ludd]

John deere 225dlc. Big boom sometimes won't go down. Where do I start

 

[mg2361]

Where do I start

With a machine serial number please.

Unless you have the controlled lowering device option, then I would be starting with the boom reduced leakage valve. I would remove the poppet and run the machine. If the issue went away, then either the poppet was sticking, or the poppet's pilot control spool is sticking.

NOTE: make darn sure the boom is on the ground and all pressure is relieved out of the boom circuit before removing that poppet cover or poppet.

 

[ludd]