Since I had the transmission out of the car to do the 20V engine swap, I decided to rebuild the clutch slave & master cylinder. It’s a good idea to rebuild/replace both at the same time. Here’s the procedure for the slave.
Pics of the rebuild kit from Toyota, Part # 04313-12030, ~$9:
Removal of Slave Cylinder from Tranny
I’m not exactly sure how to do this, as I removed mine with the tranny out of the car. So I don’t have any pics, but here’s the steps from the BGB.
1) Disconnect the clutch line & bleeder tubes from the slave cylinder. Expect some leakage. If you want to prevent as much mess as possible, bleed the system from the bleed screw.