B. Gently pull out the brass bracket (B1) from the ramp tube (B2). If the lock pawl (B3) is out,
push it in with a finger. The lock pawl is spring loaded - be careful!
C. Unscrew the screw (C1) holding the motor- and lock assembly.
D. Gently pull out the motor- and lock assembly (D1) from the ramp tube. If the assembly is
tight, use a M5 screw (D2) to retract it from the tube.