On 10/7/2020, Dave Headrick in Gilbert, South Carolina wrote:
"I have previously replaced speedometer drive seals using your procedure GT106. This time it didn't work with the bottoming tap pulling out as the old seal crumbled. So I made a puller as shown in the attached photo. Not too proud of my rushed machining but it worked quite well. [Click for larger drawing]

The longer threaded part with the taper on one end expands the "fingers" when the 1/4 inch nut is tightened. The 1/2 inch nut pulls the seal out.

The diameter of the barbs are larger than the ID of the seal shell, so it requires tapping the body of the puller into the speedometer drive housing to position the puller. Then insert the 1/4" screw from the other end and secure the nut to tighten the taper and engage the seal. Then use the 1/2-inch nut to pull the seal out".

The expanding collet can be made from a 1/2-20-UNF fine threaded bolt, maybe hex head 1-1/4 to 1-1/2 inch long. Chuck it straight in a lathe to bore the hole through the center and machine the collet end, then cut off the completed part from the head end of the bolt. The tapered expansion screw can be made from a Phillips drive flat head machine screw, 1/4-28-UNF x 1/1-2 inch long, just by cutting the new taper on the edge of the screw head.