Clone command help wanted

First of all, your clone syntax is wrong. Assuming the command block contains the correct relative coordinates to target the mech, the correct command should be:

clone ~3 ~3 ~2 ~9 ~7 ~5 ~3 ~3 ~13 replace move

Just be careful not to execute this twice in a row: if you do, your mech will be overwritten with air blocks. :) In other words, you can only move the mech once with this command. You'll need to use a different command or to move the command block 10 blocks in the Z direction manually if you want it to work a second time.

Let me know how it goes.