Throw out bearing is lubricated via the hose connected to the yoke. Grease goes through the pin and through a port in the cage assembly into the bearing.
Book says Ball and Roller lubricant but I would guess an Extreme Pressure grease would be suitable. Don't over grease it though. Book says every ten hours but it doesn't say how much. I usually only give it a couple of shots the same as the main clutch.
944A - Machine SN 43A2589 Engine SN 90A284
955K- Machine SN 71J3772 Engine SN 83Z0704
D6 SN's 4R732sp, 5R2724, 5R4832
D8 SN's 15A1254, 15A2287, 15A2723