From what I see your having trouble getting the roll pins out of the hammer shafts. Try putting some heat to the the shaft where the pin goes thru. They should just pound out. I assume you found the access hole in the front panel to slide the shafts thru. If you call MacKissic they'll e-mail you a parts blow out for your chipper.
Heat worked!!! Still had to use a few blows with a hammer, but eventually they came out...THANKS!!
Pete