Driveshaft and lubrication

Hi, 1999 2WD LTD.
1. The transmission end has a slip joint and a U-type joint, while the differential end has just a U-type joint. Does the slip-joint move in and out of the propeller shaft?
2. The owner's manual specifies grease for the spiders, slide yoke, and double cardan joints. There are no zerk fittings anywhere in the drive shaft system. How then is the lubrication done? Is grease packed in when new? Does this have to be replenished periodically?
3. Are there any splines here? There is a comment made by someone that the splines are lubricated by being bathed in the transmission oil. Have you come across this?
Thanks very much!

 

1. = Yes
2. = Greased from new. Only way to replenish is to disassemble or replace.
3. = There are splines on a driveshaft that are lubricated via grease zerk on the circular part of driveshaft.
If any of your U-joints are bad, replace with U-joint with a grease zerk for future service. If the splines (slip yoke) are bad, you will need to get a driveshaft built.
I'm not real familiar with the 2WD version, also you talked about "slip joint" & "splines", are these the same as you see them?