Well, now we have had a little practice with replacing a wooden bushing on a Uni 1 inking drum. I last posted on October 2011 when a bushing had gone on our Universal 1. We just had the wooden bushing go on our other Uni 1 (serial number: 28671). So, I thought I would share what we have learned.
On the back of the press there is a lock ring key and screw that must be removed to free the shaft. There are 2 collars on the shaft that limit the side to side movement of the inking drum and each has 2 set screws that need to be loosened to move on the shaft. Once they are both loosened you can hopefully tap the shaft out of the inking drum. This may not be that easy.
Both times that we had the wooden bushing go it ended up inside the inking drum rattling around. I used the shaft to break up the bearing and tipped the drum from side to side to get the pieces out, bit by bit. The new wooden bushing can be a very tight fit so I have ended up carefully sanding the bushing on the inside and outside to make it a bit easier to install. The bearings are fragile and can break easily with too much force. Once the new wooden bearing is in the drum it is just a matter of reassembling all the parts and tightening the collars to limit side to side play and locking the shaft with the lock ring and screw.