Neato D3 teardown

One of the drive wheels sucked up a thread from a piece of carpet. I cannot figure out how to disassemble the unit to take the wheel off. Can someone point me to a tear down of a D3 unit? or at least how to remove a drive wheel?

@aschwalb,
Unfortunately, there is no repair guide for the Neato Botvac D3 models.
If you have the robot for less then a year, you may return it to where you’ve bought it and they will exchange it for another one since it is covered by the manufacturer warranty for 1 year.