Anybody ever change one of these if so how do you get the lower piece out ?

Thanks in advance

 

You have to drop the oil pan.

The lower one is the easy one - just remove the rear main cap and pop it out. The upper one is a little tougher without removing the crank, but basically you push on one side, grab on the other and pull it out. The new one is inserted in opposite fashion.

 

thanks for the help i got it out and the new one in