Had mine off yesterday. Was going to replace the Hookes joint with greasable bearings.
The UJ bearings are part TVC100010
the replacement fastenings (recommended to replace them if you remove them) are Bolt's- 509045 Nut's- NZ606041L
The tightening torque is 47nm, and I stripped one before I got anywhere near 47nm, so now ordered the new fastenings (which I should have done in the first place I guess).
It's not as bad as I expected. At least it was a nice (if cold) day to do it!