If you have any questions then feel free to ask!
Be sure to read all the image notes!
Step 1: The Base
You'll first make the base.
Step 2: Motor and Gearing Part 1
Now it's time for motor and gearing. You'll may be able to modify it so that it uses a different motor, but I don't think that that works as the motor needs quite a lot of power.
Step 3: Motor and Gearing Part 2
Next part of motor and gearing.
Step 4: Motor and Gearing Part 3
This is the third and last part of motor and gearing!
Step 5: The Push-track
Now you'r making the small track piece where the balls are pushed allong.
Step 6: The Pump
Now you'll be making the actual pump.
Step 7: The Turning Up
This is where the balls go from horizontal movement to vertical movement.
Step 8: The Shaft
Now your making the ball shaft.
Step 9: The Top
It's time to make the top!
Step 10: Your Finished
You just have to add six balls into the shaft and then your finished!