After a 200 mile round trip to Fairbanks to get a new slave cylinder, the '89 crewcab again has a clutch!
To bleed the slave cylinder, I poured brake fluid into it until it seemed full, then took a clear tube, jammed one end of it into a jar full of brake fluid and the other end into the port in the cylinder, then pumped the pushrod in and out until I couldn't see any more bubbles in the line. I wound up with quite a bit of the fluid sucked out of the jar. Then I jammed the pushrod in hard so I could put the factory restraint back on it, to keep the pushrod in. That overflowed the jar. After this I used the little rubber dust plug that came with the new cylinder to keep the fluid from spilling out the port.
To install the slave cylinder, I first removed the old one and put a plastic cap over the end of the line. Not much fluid leaked out, because I had the cap on the master cylinder. Then I took the cap off the master cylinder, overfilled it, and went under the truck and quickly popped the cap off the line and jammed the line into the new cylinder. This time I lost some fluid, since the cap was off the master cylinder. I had already put the rubber grommet into the new slave and started the roll pin, so I just had to hold the line firmly in place with one hand and use a little hammer to tap the pin all the way home with the other hand. Then I just had to force it into its slot on the transmission and at the same time get the pushrod into the depression on the clutch lever. All doable, but all much easier said than done.
Done!