Universal Robots UR5 Service Manual page 21


For separating upper arm from Elbow joint, remove blue lid on Shoulder joint.

Disconnect wires between Elbow joint and upper arm
1 x red wire
1 x black wire
Black connector

Unmount screws around the upper arm as indicated on the picture.
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= 48V DC
= GND
= bus cable
21 Servicemanual_UR5_en_rev3.0.2