Offroad-Express

the idler bearing in my 88 GQ TD (no turbo) is getting noticeably worse since when i brought it 4months ago. ive checked various threads - and it appears that pulling the motor is best way rather than pulling gearbox back.
Are there any key issues/tricks i need to be aware of when pulling eng?

Also - if i continue to drive and idler fails, will it cause damage to clutch?

If your idler is stuffed chances are the clutch will be on it's way out to.
I have found the engine out is the best way to change them.

its a super heavy iron thing on one side and a even heavier iron thing on the other

if you have access to a hoist and a trans' jack then pulling the gearbox would be the go.
if not then the motor is the next best, just be aware that the motor is way heavy