I think you have understod the system, and the possible problem.
I have replaced the actuator several times, with the cdl open. As long as the mechanical parts in the gearbox are in the fully open position, and the actuator is in the open position, it shouldn't be a problem.
Iirc, you can put that loose cogwheel into the box, and turn it, and thereby feel what's happening inside. But I would do that only if I suspect that the locker is somewhere mid-travel.
Once, when replacing the second burned out actuator motor, I thought it could be a problem of the motor never getting to it's end position because of a mis-alignment of the actuator and the gears inside -- but it turned out to be a cabling fault, grounding just the right cable to make the motor trying to work beyond it's limits. In that respect it's a bit of a silly design with the end-stop-switches relying on a relay which is several cable-meters away. A burned relay-contact could also burn out the motor.
I have replaced the actuator several times, with the cdl open. As long as the mechanical parts in the gearbox are in the fully open position, and the actuator is in the open position, it shouldn't be a problem.
Iirc, you can put that loose cogwheel into the box, and turn it, and thereby feel what's happening inside. But I would do that only if I suspect that the locker is somewhere mid-travel.
Once, when replacing the second burned out actuator motor, I thought it could be a problem of the motor never getting to it's end position because of a mis-alignment of the actuator and the gears inside -- but it turned out to be a cabling fault, grounding just the right cable to make the motor trying to work beyond it's limits. In that respect it's a bit of a silly design with the end-stop-switches relying on a relay which is several cable-meters away. A burned relay-contact could also burn out the motor.