I have a 23 and am unsure of what pins you are talking about?
To remove the pins in the up rights that have a slide pin on them lower the bucket to the ground tip the lip down a little then using the boom raise the front wheels off the ground the pins should loosen up slide the slide pin out of the keeper spin the pin a little and pull the pin out repeat for the other side.
lower the landing legs flaten the bucket parallel with the ground. "raise up the bucket and it will rotate the up right out of the bottom pockets.
get every thing steady on the ground shut tractor off move the joystick in a circle to relieve pressure make sure the couplers have the color coded caps on the m or mark them uncouple hydraulics lock jou stick withthe little lever start up and back out from under the loader.
picture posting how to
http://www.tractorbynet.com/forums/photos/107314-photo-posting-how.html
tom