Thanks BB for your advise and suggestions. I have opened the two clutch halves.
The cork appears to be ok and intact with the inner cone snugly sitting on it. I did not remove the inner cone anymore.
The thrust bearing appear to be so attached with the clutch body and not that easy to remove. I just left it as it is as I could damage it if I force to remove it. I cannot seem to see any signs of grease from the outside. Will it be ok if I just put engine oil around the gap on this bearing ? Also, if I have to use grease, is there a special type of grease I should be using ?
The spring looks ok as well. [Linked Image]
[Linked Image]
[Linked Image]