The four hard stops are located where the motor arms connect to Skydio X2E chassis and are used to lock the arms in place to prevent over-extension during assembly. A routine preflight inspection should include the hard stops to ensure that they are in good working condition.
If the motor arms are not parallel to the chassis when fully extended, this is an indication that the hard stop is damaged and should be replaced.
Replace your X2E hard stops:
Step 1 - Identify the damaged hard stop
Step 2 - Extend the arm that is either above or below the arm with the damaged hard stop
giving you room to work
leave the arm with the damaged hard stop folded in
Step 3 - Unscrew the hard stop screw using the T3 driver tool included with Skydio X2E
Step 4 - Remove the screw and set it aside
be careful it is tiny!
Step 5 - Rotate the hard stop so the flange protrudes from the chassis
Step 6 - Grip the hard stop by the flange and remove
gently wiggle to dislodge
Step 7 - Place the new hard stop in the socket
larger diameter pin inserted into the chassis
smaller diameter pin will face out
Step 8 - Line up the hole in the hard stop flange with the hole in the chassis
insert the screw you previously removed
Step 9 - Fasten screw until the hard stop is fully locked in place
using T3 driver
torque value is approximately 6 cNm
Ensure that the flange is fully seated against the chassis, the hard stop should not move.