Problem with john deere 300cx loader

[RoyJackson]

You should expect some movement due to it being a QA loader.
Is it more then it was at one time (when new)?

Consider the problem may not be in the locking mechanisms...might be in the frame mounts or elsewhere.
Did you install you loader yourself? I suggest you check all mounting hardware...go step by step per the loader's installation instructions.

 

[soulasphil]

Did you take the loader off the tractor recently ? Have you checked it is properly seated and the hooks have come up properly under the front bumper ?

 

[J_J]

Check all your QD for the loader. Unplug and reset them.

Have you checked hyd pressure anywhere?