The operations department has contacted the maintenance department to complain that the doors are taking a long time to open on a drive-under truck loading bin.
Since the actuator is not moving as expected (the cylinders are moving slowly) we know that this is a flow problem.
Think about what the suspect components could be and then select the easy-to-check ones first.
Select your suspect components from the list and hit Submit to see how you did.
Use the Clear to reset your guesses and try again.