Can the beko spray arm be taken a part to clean inside

SOURCE: dishwasher does not clean properly

sewnice, you might have to dig a little deeper to correct the problem. As long as you can spin the spray arm with your hand and it's not split it should be ok. Your chopper screen might be plugged. You will have to remove the lower spray arm and filter cover. These are torq screws. The accumulator assy. turns to the right to unlock and will lift off. It will take some pressue to snap it off the rear fill tube. Now you will be looking down at the cover that protects the chopper and screen. There is one torq screw holding it down. Remove the screw and lift it off. See if the screen is clogged. If it is, it will prevent the pump from sending water to the upper spray arm in force. Catriver..post back

SOURCE: water not going through spray arms

Have same problem except big motor spins independent of stripped? impeller. tried to reassemble but seems mechanical or adhesive agent misssing from one shaft or the other and the motor spins the impeller (now tight) only to have it slip off again and stop pumping water.

SOURCE: top rack not cleaning and spray arm possibly not moving

Hello--our Kenmore Elite has been showing exactly the same symptoms.  Since it's under warranty I had a technician take a look at it, in fact he just finished putting it back together: problem was accumulated food and junk around the inlet filter to the pipe that leads to the upper racks.  You can only get to this area by removing the lower spray arm, filter assembly, etc. until you are looking at the sump/chopper area.  Any clogging should be self evident at that point.  
This would be an easy repair for anyone with a few tools and the willingness to get into it.  Seems to be working very well.  We will be rinsing more thoroughly in the future...

SOURCE: Maytag MBDF550Aww upper spray arm doesn't spin.

Cleaning the filter was the right thing to try.
Since you don't see cracks/breaks on the spray arm and it appears that it is spinning freely, I doubt that replacing the spray arm will fix your problem.
If your dishwasher is several years old, your problem is likely a failing pump motor, but before you swap that out, check that the impeller is not damaged. Good Luck!

SOURCE: upper spray arm falls off during operation, even after snapping

the clips that hold it in place are worn. you will have to replace it. they are not very expensive. to remove it simply unscrew the round disc above the arm

Testimonial: "Wish one could buy just the clip and not the whole assembly, but it is not expensive."